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91 nissan hardbody misfire

I fixed my intake leak replaced all injector seals and did a cap and rotor and wires changed out new head gasket good compression. checked all injectors with a volt meter there all good. when i pull spark plug wire 3 and 4 and injector wire 3 and 4 car does not change in idle it ides really bad when it was running it was burning very rich i assume from intake leak. but i dont know what eles it could be. its got the ka24e boosted i built it from ground up

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  • Cars & Trucks Master
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Please go to this link and read about the causes and the solutions for engine misfires.

Posted on Nov 01, 2012

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 95 GMC Jimmy 4.3l W vin rough idle

My problem was solved when I repaired my 4 wd activation dash switch. The switch was contacting on 2WD & 4HI at the same time. The front differential activation is vacuum activated possibly creating a tug of war that didn't actually engage it but drained off vacuum from the engine? A theory at best but stumbbled across it because I knew the switch wasn't working properly I repaired it and low and behold rough idle disappeared and all is good for 3 weeks running.

Posted on Dec 10, 2008

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SOURCE: 2001 Galant ES-V6 DTC is P0304 - Cylinder #4 misfire

look for weak valve springs.

Posted on Jun 22, 2009

  • 34 Answers

SOURCE: misfire on #6 and #8 cylinder 1996 Dodge Ram 1500

Check the spark plug wiring . There are several places where the wires cross each other. These wire cross points MUST be at right angles to each other. Or you will have a misfiring problem.

Posted on Jul 07, 2009

csmock132
  • 4669 Answers

SOURCE: 1999 Grand Am 3400 v6 misfire.

I was asking about the pushrods because I had this problem with one of these engines that had a bent push-rod. I robbed a push-rod out of an older 3100 and it was just a fraction of an inch longer which bottomed out the lifter. I figured it out by removing the valve cover and loosing the rockers when it was running and it smoothed out. I'm guessing you checked for vacuum leaks already. How about injection pulse on the number 6 cylinder when running. Another thing you could check is running compression. You said you checked compression but did you just check cranking compression or did you check running compression too.

Posted on Apr 09, 2010

Magaiver
  • 707 Answers

SOURCE: 2000 gmc jimmy 4.3L misfire on cyl 4 and cyl 5 at

Clean the egr valve which would cause rough ideling and misfire........Hope this helps u out.

Posted on Aug 15, 2010

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