What Would Cause A Cylinder 1 Misfire

Flashing CEL does not mean multiple random misfire, It means the misfire has reached a threshold the pcm thinks you may cause catalytic converter damage if you continue to drive it and it is warning you by flashing the CEL. P0308 Cylinder #8 Misfire. When diagnosing a misfire DTC and no concern can be found following eSI, the technician should inspect for aftermarket components installed. P1399 is a misfire code for any cylinder it is a precursor to p0301,2,3,4,5,6 code which is a specific cylinder misfire p0301 being one p0302 being cylinder an so an firing order is passenger rear. I'm getting code P0307 and P0316 (cylinder 7 misfire). Filled with premium shell fuel (93 oct). The car has been driving like trash for the last couple of days and the engine light came on today with a P0301 which is Cylinder 1 misfire detected. need help!! i have a 97 camaro 3. I then went ahead and replaced my plugs to the NGK double platinums. I checked the cable on 1 and it looks fine. The car started shaking, lost power and check engine light started flashing. I'm also gonna' offer you a simple diagnostic strategy that will help you get to the bottom of the whatever is causing your Toyota's misfire (rough idle). However, the most common cause of an ignition misfire is a bad ignition coil. It could be an injector, but it should throw a code for an injector, at least my wifes LaCrosse did. being torn down and repaired as we speak$ 1,500 parts and. Combustion gas may leak past the injector's needle and seat, or the copper combustion seal. See here for a step-by-step guide on how to diagnose and fix check engine light code P0301. i try to start back up and it sounds like a whole bunch of misfires. Started driving to work and all of a sudden I noticed a misfire at idle, or low RPM/low load. cause of the misfire. Ive posted about this situation before but it still going on. A failed ignition coil or a bad spark plug wires. P0306 STRIKES RUBICAT AGAIN : Jeep JK Wrangler Cylinder 6 Misfire Last week, Cindy and I packed up Rubicat and headed out bright and early to make our way down to Shaver Lake and with plans of taking her out to the Dusy Ershim Trail. P0307 Cylinder #7 Misfire. For example, if the misfire is caused by a bad on-plug ignition coil, which is quite common on many newer cars, the repair might involve replacing a bad coil and all the spark plugs. 04 Passat 1. The higher octane can cause a premature explosion while the piston is on its way down which now is working against the piston instead of with it. Leaky fuel pressure regulator, weal pump that cause a low fuel pressure, inoperative, clogged, or dirty fuel injector, restricted fuel filter or air leaks can causes lean misfire. Another reason a cylinder may misfire is due to a loss of spark. 6 sohc started misfiring. The code P0302 means cylinder 2 misfires, P0303 is the cylinder 3 and so on. They either go or stop completely, that was until they intrduced all this computerised electronic injection systems. Smell of unburned gas exiting the tail pipe. ones at about 2000 miles and now at 4500. The P0301 code means that the cylinder 1 is misfiring or is randomly misfiring. Help needed. 8 T with 59,xxx miles. The "soft" misfire, often called a surge, is commonly associated with fuel related issues. When I pulled the code it read P0301 - Cylinder 1 Misfire. I read on the forums that a misfire could be the COP or the spark plug. 7 Dodge Dakota 7/19/2001 10:52:32: RE: what causes cylinder misfire? IP: Logged. If none of the above fixes your misfire problem carefully analyze the fault codes, it is possible that misfire may be indirectly caused by another problem in the engine. The check engine light does flash when there is any type of actual misfire which you can feel when the motor shakes and shudders. Defective or clogged fuel injector. Assuming the compression is good; some possibilities could be: Faulty coil. • Misfire activity on cylinder #1Misfire activity on cylinder #1 and #5 has been corrected • Clid #3 l hCylinder #3 alone now shows consistent misfire activity on the Tech 2 scantool • Time to review fuel trim andTime to review fuel trim and vacuum readings again. to recap, about a month ago, I had a 1,2,3,4 misfire. The other thing I noticed was that the misfire did not come in until the engine speed reached about 1500 RPMs. In working on a 2005 Dodge Charger with the 2. I'm not very happy about that, but I guess there is nothing I can do. when the vehicle would cool down the coolant would just get by the headgasket and have a little coolant in the cyl when the vehicle would start again. Re: Cylinder 1 misfire / Cam Syncro Take the wire out of the coil pack and rest the wire just on the top of the coil, the spark will jump from the coil to the wire. Possible causes of OBD code P0301 Suzuki A code P0301 Suzuki may mean that one or more of the following has happened: Faulty spark plug or wire Faulty coil (pack) Faulty oxygen sensor(s) Faulty fuel injector Burned exhaust valve Faulty catalytic converter(s) Running out of fuel Poor compression Defective computer. We know from our road test that the misfire is not present at all times, so we need to consider what. 0L Rubicon engine would not idle on a hot restart. Possible causes. At one point I took it the the STEALERship and they said, well it is bad gas. Bad spark plug wires are another common cause of misfires. The loss of 25% of the engine's power output is the equivalent of a horse trying to run on three legs. 4 Liter Motor. This can be something that stops coil voltage from hopping the gap at the end of the spark plug, such as worn out or corroding parts. The damage you see will help you determine the cause of the misfire. Low compression in cylinder (worn rings, bent/chipped valve or valve seat, blown head gasket). Problem with the ground circuit for the injector. 50,000-volts can be harmful or even fatal in extreme circumstances. The P0301 code means that the cylinder 1 is misfiring or is randomly misfiring. i only get it when im on the gas. all i can search up on the net is that i should check my spark plugs (which are brand new E3's), replace my egr valve (i had trouble with this valve so i shut it off with the predator but i don't know why it would cause a problem with just one cylinder), or exhaust valve burned (my exhaust manifold is. Put our Pico scope onto cylinder 1 fuel injector. So I got the job to replace them, only to find fault still comes up. Engines 1996-2007 generally use a single coil pack (contains three coils) for all six cylinders. hello guys i have a 09 dodge charger with a 5. what i had was bad cyl head. Heavy carbon buildup on the piston, a clogged injector, a marginally working O2 sensor, a vacuum leak - any of these can cause a misfire. I have swapped coil packs between cylinders 1 & 2, swapped spark plugs between 1 & 2, put new NGK plugs in gapped at 0. Unfortunately, even if it's actually just 1 cylinder misfiring, it usually throws codes for all cylinders along with random misfire. Reset the ecm. 4k-6k rpm at about 50-90 mph and now today i got a p0420 not really worried about that code untill i get the misfire fixed cause its driven me crazy. I also tried some techron in case it was the injector. Pulled codes and got 0303: misfire in cylinder 3. Im deployed to Iraq, but before deployment my pick-up tube cracked and I spun a rod bearing. In diagnosing the misfire, some information is needed about the maintenance of the vehicle. It is pertinent to know whether it has been converted to twin port. Page 3- causes of P0301 misfire cylinder 1 Service & Maintenance. The code P0300 stands for random misfire. the engine may be harder to start 2. Basics Causes of a Misfire Condition. What does this code mean anyway? The definition for this this P0171 code is Fuel Trim System Lean (Bank 1). 6 was in with a multiple misfire all cylinders, misfire cylinder 2. I too have a cylinder 3 misfire (code P0303) - it just came on as I was getting to work so I haven't driven the car enough to know if there is a lack of power or not. In addition, low compression (bad cylinder, piston rings, sticky or leaky valves or even valves out of adjustment) will affect the amount of air coming into the cylinder which will cause a cylinder to misfire and could set a P0300. Assuming that compression checks out okay Double check the electrical connection to your injector for Cylinder 1 (mine was loose on #3 giving me a misfire) and if you can probe the wire back to ensure that there is not a break in it, and if you can pull your plug and ground it out to make sure it is actually firing, and maybe check and or. If you have an engine misfire and have isolated it to one cylinder, the cause will be obvious when you remove the spark plug. Today I tried to spray brake cleaner on bent gasket as best I could with plenum on and it didn't change the idle. If the problem persists more tests needs to be done to diagnose problem, see "Possible Causes". I took it to an independant VW Audi specialist who have a good reputatiom in the Grimsby Cleethorpes area. Problem with the ground circuit for the injector. 4 miles and the CEL comes back on saying Cylinder 2 misfire again. This makes diagnosing the problems simpler than P0300, which means that the cylinders are randomly misfiring. I replaced the spark plug. as a cylinder 8 and random misfire. This can be on one individual cylinder or all of them. I have that for a while and it seems to be gradually getting worse. Misfire on cylinder toyota tacoma 2001 [ 2 Answers ] Check engine is showing a code that displays a misfire on cylinder # 2 on my toyota tacoma 2001 that has the 3. What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. You can use it with spark plug wires, ignition coils (assuming you have a coil for each cylinder ), spark plugs, etc. The misfire repair depends highly on the cause, thus, it is important to have the problem diagnosed properly. Put our Pico scope onto cylinder 1 fuel injector. The Engine Control Module (ECM) detects a misfire by using the crankshaft position (CKP) sensor to measure the acceleration of the crankshaft when a cylinder fires. It seems to only be one cylinder, but I haven't verified this yet. anyone else seeing this problem? had it to the dealer 2 times and they cant come up w/ a reason for it. The engine idles a little rough and the cel is on. Coil packs frequently go on these cars and they run around $40 a piece for Bosch oem. Ford Explorer, Aerostar. Can bad o2 sensor cause misfire on 1 cylinder? I have a 2001 Chevy Venture after fueling up the other day my check engine light started to flash. Engine Stalls, Misfire Code, & Cylinder Misfire The engine may be stalling because it isn't getting enough throttle opening. If the code stays with cyl 1, something else is creating the misfire. I have that for a while and it seems to be gradually getting worse. A simple Compression Tester will be able to verify if a certain cylinder is low on Compression. I called the dealer because I am at 35,000 miles so it should be covered under warranty. The P0301 Acura code means that the cylinder 1 is misfiring or is randomly misfiring. Random Misfire 1. Some like to use the 4C coils for it for better performance and longevity (which should be the same as GQV ones). 7L with 105,000 miles on the clock. In this case it's cylinder #1. It could be an injector, but it should throw a code for an injector, at least my wifes LaCrosse did. What would cause a cylinder 1 misfire in an 03 escape - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. The P0301 JEEP code means that the cylinder 1 is misfiring or is randomly misfiring. Leaky fuel pressure regulator, weal pump that cause a low fuel pressure, inoperative, clogged, or dirty fuel injector, restricted fuel filter or air leaks can causes lean misfire. I have a 2011 Chevy Malibu LTZ - 4 cylinder 108,000 ( I drive a lot for work) ESC/Traction control light comes on. LinkBack Thread Tools Display Modes 09-23-2008, 05:41 PM #1 (permalink). It has new plugs, new coil pack, new injector on cylinder 1, and it still misfires. However, the problem is still there. I did a scan, it came up, misfire on cyl 1. Codes were cylinder 4 misfire and another code related to some type of solenoid. Not just one cylinder that would be affected by low pressure issue, but all cylinders will be affected as well, as do most air leaks. Then the 3 and 4 misfire began. See here for a step-by-step guide on how to diagnose and fix check engine light code P0308. When I pulled the code it read P0301 - Cylinder 1 Misfire. The last number represents the cylinder that is having the misfire. Check to see if the "Check Engine" light is on and, if so, what the codes are. P0306 STRIKES RUBICAT AGAIN : Jeep JK Wrangler Cylinder 6 Misfire Last week, Cindy and I packed up Rubicat and headed out bright and early to make our way down to Shaver Lake and with plans of taking her out to the Dusy Ershim Trail. Picked the car back up drive 18 miles and tonight the CEL is back on again saying Cylinder 2 misfire. It has new plugs, new coil pack, new injector on cylinder 1, and it still misfires. The check engine light does flash when there is any type of actual misfire which you can feel when the motor shakes and shudders. 6 FSI Hi, My Fsi 1. The time to complete the process depends on the cause of the misfire. Random Misfire 1. A misfire under load complaint can usually be broken down into 2 categories. Took car to dealer next morning. Assuming that compression checks out okay Double check the electrical connection to your injector for Cylinder 1 (mine was loose on #3 giving me a misfire) and if you can probe the wire back to ensure that there is not a break in it, and if you can pull your plug and ground it out to make sure it is actually firing, and maybe check and or. 4 V-6 (5VZE) engine, so far I replaced sparkplugs wires and sparkplugs, this engine does not have a distributor, it comes with coil packs for the spark plugs and the computer. I just don't know beyond the switch box, what other possible causes i might check before i change out a high dollar switch box. Misfire on cylinder 1. Faulty spark plug 1. Tech recommended replacing the plugs and BG intake cleaning service. The reason it runs bad "sometimes" may be the misfire is causing a chunk of carbon to make things worse for a time, then blows out. There is a code for cylinder 1 misfire. Not sure how else to describe it. Anything outside that range and the misfire went away. At this stage enough is enough as no further testing can be carried out with the engine installed. Cylinder #1 Misfire Detected. A) Misfire occurs more than once/200 revolutions in one cylinder, so that DME cuts off fuel for that cylinder's nearby injector; B) A DTC diagnostic trouble code is thrown indicating the cylinder that misfired and that the fuel was subsequently cut off & the SES service engine soon light comes on solid yellow (not blinking) to warn the driver;. I went to a autozone to have the code read and it came up a misfire on cylinder 1. Use a spark plug socket to remove the plug so you can get a good look at it. Basics Causes of a Misfire Condition. P0301 should be considered a cause for concern, and can be a threat to the drivability the Ford Edge. Car started immediately. A misfiring cylinder in a four-cylinder engine is, pardon the pun, hard to miss. Not just one cylinder that would be affected by low pressure issue, but all cylinders will be affected as well, as do most air leaks. Pulled codes and got 0303: misfire in cylinder 3. LOL, I said no thanks I already fixed it- just didn't have a way short of disconnecting the battery to turn the CEL off (yes I know it will eventually turn itself off after the fault is corrected, but it. Check to see if the "Check Engine" light is on and, if so, what the codes are. At one point I took it the the STEALERship and they said, well it is bad gas. A good friend phoned me from King of the Hammers last year, sharing that his late (2004) TJ Wrangler 4. Use these parts for cylinder one and see if the misfire continues. I checked the cable on 1 and it looks fine. Its a V6 4. For example, if the misfire is caused by a bad on-plug ignition coil, which is quite common on many newer cars, the repair might involve replacing a bad coil and all the spark plugs. LinkBack Thread Tools Display Modes 09-23-2008, 05:41 PM #1 (permalink). It is pertinent to know whether it has been converted to twin port. Misfire on cylinder #1. what are the possible causes of misfire on number one cylinder in a dodge 2003 ram 4. Then put the cylinder 1 parts into cylinder 2. Also check the spark plug carefully for anything that could cause a misfire, eg cracked insulator or particulate lodged in the gap. 1 to the rest Europe. The classic way to troubleshoot this is to pull the connector off the coil packs one by one with the engine running until you find the one that does NOT cause a change in the sound of the idle. Anything outside that range and the misfire went away. I haven't had a misfire on cylinder 1 in about a whole week but I've noticed the car seems to idle rougher. Also, make sure you jot down the other codes, as misfire can be caused by a malfunctioning component or system. If this happens too often within so many RPM, the ECM will log the cylinder misfire fault and kick out the consequential code P0301 - Cylinder Nbr 1 Misfire. So if you want to rule out the coil pack for the cylinder 4 misfire, you should be able to swap the ignition cables from #1 and #4 on the coil pack. Re: Symptoms of a cylinder misfire????? san antonio??? i thought u were in switzerland? well ive had a lot of people tell me to get the carbs synced. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 1. Whilst you could actually have a misfire in one cylinder due to an ignition or injector issue, these codes are also often caused by a failing Mass Air Flow (MAF) meter. P0301 should be considered a cause for concern, and can be a threat to the drivability the Ford Edge. RE: what causes cylinder misfire? IP: Logged Message: Heyyy i just had my 2000 dodge dakota 5spd. I called the dealer because I am at 35,000 miles so it should be covered under warranty. The check engine light does flash when there is any type of actual misfire which you can feel when the motor shakes and shudders. This is where deductive reasoning will save you time by helping you deter-mine which checks or tests should be performed first. Looked corroded and maybe an oil residue. P0306 is an OBD-II generic code that the engine control module (ECM) detected a misfire on cylinder number 6 of the engine. Spark plugs are often very cheap and in most cases easy to replace. Car started immediately. Then put the cylinder 1 parts into cylinder 2. Random Misfire 1. FIXD explains symptoms, causes, and severity of code P0308. It will act up pretty bad at anything over 5 lbs of Vacuum and outside of 2500-3500 rpm's. so i changed the plugs. The scan tool shows no knock on any cylinder. If this happens too often within so many RPM, the ECM will log the cylinder misfire fault and kick out the consequential code P0301 - Cylinder Nbr 1 Misfire. is that true? that this could cause a misfire? any help would be awesome!. The engine computer or PCM can detect a misfiring cylinder by monitoring the engine speed. The engine control unit can detect a misfire in some different ways, depending on what car model and engine you have. I have this Durango in my shop with rolling misfires. A code reader showed random misfires and cylinder 3 misfire. The code P0300 stands for random misfire. The last digit of the code P030X stands for the misfiring cylinder number. About 2 month ago I got Check ingine light on with couple of codes such as System to Lean bank1, Multiple misfire, Cylinder 1 misfire and Cylinder 2 misfire. I replaced the spark plug. vacuum leak 3. The code P0300 stands for random misfire. The car will randomly run very rough while driving down the road and then after a while run normally again. A faulty crankshaft sensor or cam sensor can cause a misfire. is that true? that this could cause a misfire? any help would be awesome!. Can bad o2 sensor cause misfire on 1 cylinder? I have a 2001 Chevy Venture after fueling up the other day my check engine light started to flash. Car still at dealer 2 days now. I’ve taken it to 3 Subaru specialty dealerships and they’re all puzzled as to why it’s happening. Ignition coil 1 harness is open or shorted. What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. I have swapped coil packs between cylinders 1 & 2, swapped spark plugs between 1 & 2, put new NGK plugs in gapped at 0. So checked the spark plug,it was terrible. There are more things than just that ignition coil. A misfire under load complaint can usually be broken down into 2 categories. I also have a 2003 V6 which misfires in cylinder 1. see if the code returns. Cylinder-1 misfire is consistently at high rpm near redline and would not happen on jb4 map 1, but does on map 7. Check Engine Light Code P0300 Random/Multiple Cylinder Misfire Detected. RE: what causes cylinder misfire? IP: Logged Message: Ah! Another thing, make sure the cap and rotor are seated properly and there is no mositure under the cap! IE: Pop it off and spray it with WD-40, which will displace the water and dry pretty quick. If there is not a Cylinder Misfire Counter, then you might have to switch components—such as coils, spark plugs, etc. Hi, I have a 2010 Escape 4 cyl with a cylinder 1 misfire code. Code P301: Cylinder #1 misfire code. The funky mixture in cylinder 5 is what's causing the misfire, which gives you the advantage of knowing which cylinder is misfiring. Since I replaced the plugs I have had no new trouble codes. 2010 challenger RT, 6 speed, only mod is SOLO mach X exhaust. 5X the legal limit, or if the misfire rate is high enough to cause possible damage to the catalytic converter. Cylinder 1 misfire. Take any one of those away in any cylinder and you will get a misfire code. I have a misfire on cylinder 3 after the vehicle warms up. The code P0300 stands for random misfire. P0301 is a cylinder specific misfire code, which means that cylinder 1 is misfiring and causing the code. Also, take a good look at the distributor cap, ignition coil, or rotor to see the faulty parts. Vibration at about 50 and 70 mph and when in gear and foot on brake. it stoped for a day and came back. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Make sure you don't touch anything when it's running lol, do one wire at a time and you may find a dead portion of the coil. I went to a autozone to have the code read and it came up a misfire on cylinder 1. I would first check for consistent spark on #1 with an inline spark tester to rule out something simple like a bad spark plug wire. cuz before i got the bike it sat for a good four months cuz the guy just didnt have the time to ride it anymore. If none of the above fixes your misfire problem carefully analyze the fault codes, it is possible that misfire may be indirectly caused by another problem in the engine. 60v, ECT sensor over 176°F, VSS under 3 mph, then test started and PCM detected a misfire in 15% of the engine cycles in 200 revolutions, or detected a misfire in 2% of engine cycles in 1000 revolutions. P0307 Cylinder #7 Misfire. I have changed the plugs and Swapped that coil / wire but still get a misfire. I also replaced the air filter which was really dirty and put injection cleaner in the fuel. My check engine light has been coming on and going off for the last couple of weeks. Engines 1996-2007 generally use a single coil pack (contains three coils) for all six cylinders. It has new plugs, new coil pack, new injector on cylinder 1, and it still misfires. The tech sheet I got back said it was a cylinder 1 misfire, sporadic. maybe fresh eyes and brains can give me some troubleshooting steps. The loss of 25% of the engine's power output is the equivalent of a horse trying to run on three legs. so i changed the plugs. have done all the preliminary tests, swapped coils, plugs, injectors, compression and leak down. Use a spark plug socket to remove the plug so you can get a good look at it. the day before this happened it ran just fine. Damaged, worn, or bad spark plugs , or a weak ignition coil can cause a loss of spark, and therefore, a misfiring cylinder. I've tried trouble shooting it by switching out Cylinder 1's spark plugs with Cylinder 3's and also the coil-packs and then clearing the code. A misfire under load complaint can usually be broken down into 2 categories. The first thing to understand in this instance is that no. Then the 3 and 4 misfire began. I have a compression tester so will test that, so far I have done the plug and wire swop and have a replacement coil pack on route. A P0301 code tells you only that a misfire has been detected, not WHY the cylinder is misfiring. All of them should be treated very seriously because of the level of extra strain being put on the engine. only happens at idle and rarely 2 cylinders counting at the same time. For companion cylinders,. i have a 99 windstar 3. i have a misfire on cylinder 4 of my 2001 buick century. I would first check for consistent spark on #1 with an inline spark tester to rule out something simple like a bad spark plug wire. As noted here, there are a number of reasons that cause a cylinder to misfire. Ignition coil 1 harness is open or shorted. A misfiring cylinder in a four-cylinder engine is, pardon the pun, hard to miss. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. In this video i track down the misfire and have the car firing on all 4 cylinders by the end of the video. My '06 Honda Pilot has been popping cylinder 1 and 2 misfire codes. In the morning I am experiencing a misfire code P0301 (cylinder 1 misfire) with both my check engine light and my stability control dummy lights active constant on. I really don't thing a bad knock sensor would cause a cylinder specific misfire, but they are less than $8 each at Rockauto, so I ordered a couple of them. Hello, I have misfires on cylinder 1 and 5. I’ve taken it to 3 Subaru specialty dealerships and they’re all puzzled as to why it’s happening. The misfire is evident in the roughness of the engine at idle and brings up a flashing engine light until about 70C has been reached. Note: Be aware that the #1 cylinder misfire code is a catch all. I replaced all the plugs with NFL and also s new coil pack for cylinder 6 and after 3 or 4 days it will reappear. (if present). Evo Cylinder Misfire Need Help. Ran ok for a while then the light came on again with the same code. Misfire is a common drivability problem that may or may not be easy to diagnose, depending on the cause. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 1. The code came back P0303, cylinder 3 misfire. For example, if the misfire is caused by a bad on-plug ignition coil, which is quite common on many newer cars, the repair might involve replacing a bad coil and all the spark plugs. 4 miles and the CEL comes back on saying Cylinder 2 misfire again. My 1988 Springer Softail has had a problem over the last 5 years or so, always the same thing. Page 1 of 3: How to Troubleshoot a Misfire (GM 4. sometimes cyl 1 shows a counting misfire at idle, sometimes cyl 3, sometimes cyl 5. Ford Explorer, Aerostar. In this video i track down the misfire and have the car firing on all 4 cylinders by the end of the video. What are the common causes of code P0301? A single cylinder misfire is typically caused by one of the following: (1) Spark problem (2) Compression problem (3) Fuel injection problem. It will often be accompanied by codes P0302-P0308. the code reader says cylinder 5 misfire, which cylinder is #5 and will changing the coil fix it, the car runs fine at speed, it has had a small hesitation for many many miles when i come to a stop, but recently it has gotten worst, has small trouble off the line but once moving it is fine, is there anything else that could cause the misfire, i have read reviews that many other people have had. Fouled, damaged, or worn spark plug. If a Diesel has a permanent misfire it is usually injector trouble or it has a compression off on one cylinder. The tech sheet I got back said it was a cylinder 1 misfire, sporadic. Will not pass the emissions tests. Set conditions, the variation in crankshaft speed between each cylinder exceeds a calibrated value, based on engine rpm load. TROUBLE CODE (DTC) P115A WILL BE STOREDInert combustion gas in an injector can cause a IN THE POWERTRAIN CONTROL MODULE random misfire in one or many cylinders. sometimes cyl 1 shows a counting misfire at idle, sometimes cyl 3, sometimes cyl 5. Tech recommended replacing the plugs and BG intake cleaning service. I checked the coil pack and the secondary resistance was out of range from the goodwrench. When I pulled the code it read P0301 - Cylinder 1 Misfire. ACTION Misfire Definition: A misfiring cylinder is lacking The misfiring cylinder must be identified throughpower relative to the other cylinders. If you have an engine misfire and have isolated it to one cylinder, the cause will be obvious when you remove the spark plug. only happens at idle and rarely 2 cylinders counting at the same time. Smell of unburned gas exiting the tail pipe. P1399 is a misfire code for any cylinder it is a precursor to p0301,2,3,4,5,6 code which is a specific cylinder misfire p0301 being one p0302 being cylinder an so an firing order is passenger rear. ) With the engine idling he should hear the injector faintly clicking due to the ground circuit being open. or pull the battery for about a minute. That's an expensive part to get for the chance of fixing it. Still number 1. There is a code for cylinder 1 misfire. i only get it when im on the gas.