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Why is my car misfiring?

 
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Old 02-07-2012, 04:29 PM
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Why is my car misfiring?

Hi,

I have a 5th Gen Honda Prelude and it broke down a few months ago cause it was misfiring on one cylinder. I replace the leads, plugs, rotor arm and distributor cap.

It's been fine until now when it's started doing it again. It's only when I'm in too high a gear. Normally it'll struggle a bit but now it's misfiring. At one point it was actually still misfiring at around 3000rpm.

It had a compression check a couple of months ago and only one cylinder was a couple of bar higher then the others. I'm not sure if this is the same cylinder that's misfiring or if it's even related.

The ignition system seems to be ok so I can't work out why it's doing that.

Any help would be great!

Thanks in advance
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Old 02-09-2012, 10:52 AM
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Re: Why is my car misfiring?

Did you properly Gap your spark plug? Also check the Fuel injectors? Check your PCV Valve?
No check engine light? Also check your vacuum hoses.
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Old 02-09-2012, 07:09 PM
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Re: Why is my car misfiring?

I am having the same issue! I have a 98 Lude SH and the CEL's are a P301 cylinder 1 misfire and a p1399 multiple cylinder misfire, and is either bad EgR or needs valve adjustment. I've check spark plugs, wires, cap and rotor, injectors, and the egr valve. The EGR valve was junked up with carbon so i cleaned it and now the misfire sounds even more prevalent. The car has just had a new distributor, Head Gasket, valve adjustment, timing belt, and water pump... If you resolved your issue or is anybody could shed some light on my problem it would be greatly appreciated!!
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