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Dead miss problem, completly stumped!

 
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Old 02-13-2014, 02:45 PM
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Dead miss problem, completly stumped!

Ok I have a 2001 prelude, I had the engine out to try and fix an oil leak that I suspected was coming from the oil cooler/adapter. When I put the motor back in and started it, it has an awful miss, I checked all my injectors they are pulsing at the right voltage. all the injector wires are good. plugs are good and I adjusted the valves, checked the dizzy and everything is good, the miss is coming from cylinder #1 at an idle and up through 3 grand it misses but revs out after that, when I unplug cylinder one it doesn't change at the idle but seems to miss more when you rev it. their is a drastic change when you unplug all the other plugs wires. Replacing the gasket on the oil filter adapter did not fix my oil leak but im almost sure the two problems are unrelated. have good compression on all cylinders and im not sure what else to do. Not throwing any codes. Help and advice is much appreciated!
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Old 02-13-2014, 04:28 PM
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Re: Dead miss problem, completly stumped!

You pulled the engine just to replace the oil cooler o-ring? Wow...

I replace that, as well as every other seal with the motor in the car.

Check your ground wires. Specifically the one beneath the distributor, and the ones around the battery. Check all harness connections and be sure that they are tight.

Have you checked your plugs, as well as cap and rotor within the distributor? Do you see any arcing between the sparkplug wires to show a potential bad wire?



You could potentially have the start of an EGR related issue, if all of the above has been done. Start by removing the EGR valve and cleaning it.
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Old 02-14-2014, 03:11 PM
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Re: Dead miss problem, completly stumped!

yes I could not get my intake manifold off with it in the car and I figured pulling the motor would make it easier to see where the leak was coming from but obviously made some mistakes, I will check my grounds and clean the egr valve but the distributor and plugs and wires have been checked and all seems to be good. Is it possible that this could be caused by a head gasket leak, oil is fine with no water or coolant in it.
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Old 02-14-2014, 07:51 PM
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Re: Dead miss problem, completly stumped!

For future reference - you can do the oil cooler o-ring from beneath the car. Unless you own an SH, if that's the case, i'm sorry for your pain lol.
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