Question about 2005 Mercedes-Benz E 500

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2005 e500 cylinder 8 misfire idk what's the problem it has new plugs wires and coil pack when I clear the code it stays off until I floor it

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6ya6ya
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Posted on Jan 02, 2017

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chuck943
  • 783 Answers

SOURCE: engine code p0307 cylinder #7 misfire

It could be carbon deposits on valve seats keeping valves from totally closing. You can try getting you a can of motorcraft PM3 top end engine cleaner and get engine up to operating temp then remove one of the small vacuum lines from the intake and draw the contents of the can slowly into the engine.After you have drawn in the contents shut engine off and let it soak for about 45 minutes then crank it back up and let it run until it clears. Now it will smoke like a forrest fire while you are doing this so don't be alarmed,just tell the neighbors you are spraying for mosqitos.This may cure the problem. If not you may be looking at a valve job.
This can be verified with a compression test if this is what is causing it.

Posted on Feb 05, 2009

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  • 155 Answers

SOURCE: 2004 Lincoln navigator misfire on cylinder 8 error code p318

Replace the coil pack once more. I went through 2 new ones on my f150 on one cylinder. One worked, the other didn't (both new off the shelf). Condensation build up in the boot caused mine to misfire. Anytime you replace a coil pack, squirt a little silicone grease inside. This will prevent condensation from hitting your plug. Fords are notorius for this problem, especially if you live in a humid area. Also, make sure and clear the codes after you make the repair.

Posted on Jun 10, 2009

jasperoni
  • 203 Answers

SOURCE: mercedes c200 elegance 1996 model mis-firing on cylinders 1-4

I beleive your firing order is 1 3 4 2. 1 and 4 are companion cylinders-meaning the piston is up or down at the same time i.e. compression and exhaust stroke both pistons are up and even on the exhaust stroke the ignition fires in order to burn unburnt fuel/ h ve you checked your trigger. There is a good coil testing tool that is placed over the coil and has a magnetic pickup that allows you to see if the coil is being triggered-just because you have power doesn't mean that you will have spark. I would replace your ignition wires and look at your wiring harness very carefully- if it is very brittle and you see bare wires exposed that is your most likley problem because the trigger is working for 1 and 3 and has the crank senser input for all for spark plugs and the cam senser is used for ignition advance and your fuel injection system. try wiggling your harness and see if your coils start to work. wireharnesses are a major problem on mercedes benz vehicles of that era. I hope I have been helpful

Posted on Jun 18, 2009

  • 5 Answers

SOURCE: 2003 Chevy Venture misfiring

The injector is a good possibility, although you should check for spark in the wire first, as the electrical is the weakest link in the system. Put a spare plug in the end of the wire with the plug resting on metal, then have someone crank the van to see if you have spark that far, test and replace spark plug, (do not get shocked!) then look into a new injector or a good cleaning.

Posted on Jul 17, 2009

  • 1 Answer

SOURCE: 2005 chrysler 300c misfiring cylinder

I have a 2006 5.7 Hemi 300C AWD - #4 cylinder started to misfire at idle. Problem just happened without cause on a Sunday morning. Dealership mechanics have exchanges coils, PCM, etc. problem stays with #4 and is sporadic (soemtiem cold idle, sometimes hot). Happened after a new fill of 90 octane gas from Shell (always use this station, never any previous problems). Car is in perfect shape, with only the dealer ever touching it at every req. maintenance schedule. Today they are pulling the head to check for valve issues. SMART troubleshooting trees and TSB's are no help so far. Anyone else with a solution?

Posted on Sep 01, 2009

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Nov 28, 2015 | Cars & Trucks

1 Answer

What causes engine misfires to stay after new plugs and coil packs?


Try swapping the coil packs around - like swap #1 with #2, and swap #6 with #5, see if the misfires MOVE with the coil packs swapped to the new cylinders or if they stay with the cylinders. If they move with the coil packs, the new coil packs are bad. If they stay with the cylinders, there's a problem with those cylinders. You DID replace that camshaft sensor, right?

Have you checked your #1 and #6 injectors?

Aug 07, 2014 | BMW 528i Cars & Trucks

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Misfiring. Stopped at AutoZone and computer said #6 cylinder misfiring. Do I just need to change the spark plug or get a new coil pack? Also, which plug is number 6


number 6 plug depends on what engine you have 6 cylinder or an 8 cylinder you need to be careful with that code it could be a plug , a plug wire , a coil pack . i had an issue with that code and it was the crankshaft sensor 38 dollars from an autoparts store dealer wanted 170.00 ! crank sensors have an adjustment on them a few thousands of an inch and yes it makes a difference ! hold it down while you tighten the bolt . hope this helps

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My Sentra is overheating. I changed the Thermostat before taking it to the local Autozone and have the check engine light checked out. Well I was told there after scanning the computer that it is a MISFIRE...


First step is new plugs. It's possible that you have a fouled #1 plug. If that doesn't work, check spark wires (if the car is so equipped) or if it has direct coil-on-plug ignition, where each cylinder has a coil pack on top of the plug, swap the coil packs between cylinders 1 and 2. Clear the code, run the car, and rescan the computer. If the code moves to indicate cylinder 2 misfiring, then your coil pack needs to be replaced.

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Misfire #3 cylinder


Has anyone found the problem? My 2003 has #3 cyclinder misfire and I have replaced the plugs and wires. It runs rough at idle but smooths out at highway speed. Anyone have any knowledge on this? This sounds like a common problem.

Sep 09, 2009 | Cars & Trucks

1 Answer

2004 Lincoln navigator misfire on cylinder 8 error code p318


Replace the coil pack once more. I went through 2 new ones on my f150 on one cylinder. One worked, the other didn't (both new off the shelf). Condensation build up in the boot caused mine to misfire. Anytime you replace a coil pack, squirt a little silicone grease inside. This will prevent condensation from hitting your plug. Fords are notorius for this problem, especially if you live in a humid area. Also, make sure and clear the codes after you make the repair.

Jun 10, 2009 | 2004 Lincoln Navigator

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