Misfire Thread
03-25-2009, 11:20 AM
#12
Registered User
Originally Posted by 9KGHOST,Mar 25 2009, 11:01 AM
GOD!!!!!!!...I'm having this issue now...hopefully its not bent valves...roughly how much would changing my valves cost me...any input would be great...THX
-Chris
-Chris
The best thing to do is to start small and go from there.
03-28-2009, 07:08 AM
#13
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how the hell does this happen at 20k miles? i have p0300, p0301 and p0302. i put over 500 mi on the car last weekend and it ran perfectly...now all of a sudden i get this crap...here goes my saturday.
03-28-2009, 04:19 PM
#15
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I'm having the same problem right now. My mechanic found that my fuel pressure was low so I'm gonna replace the fuel filter to see if that does anything. My compression came out ok and I already changed spark plugs so we'll see what happens.
03-28-2009, 06:01 PM
#16
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Thread Starter
^^ If you didn't know...the fuel "filter" is about like a cheese cloth sock on the fuel pick-up in the fuel tank. It's not likely that it is the problem.
[EDIT] I'll retract the above statement. We have found that low fuel pressure can be a misfire cause. See reason #1 for the clogged fuel pump or fuel filter.
[EDIT] I'll retract the above statement. We have found that low fuel pressure can be a misfire cause. See reason #1 for the clogged fuel pump or fuel filter.
04-05-2009, 04:39 AM
#18
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My 2002 started having misfires across all cylinders about 2 years ago. I took it to a local mechanic and he tried everything stated in the OP as well as a valve adjustment. None of that fixed it. He gave up and I gave in and took it to a Honda dealership.
They immediately diagnosed it with a faulty throttle body sensor; at idle it was sending a incorrect voltage to the ECU. Once the TB was replaced, everything ran smoothly. Have not had a problem since.
They immediately diagnosed it with a faulty throttle body sensor; at idle it was sending a incorrect voltage to the ECU. Once the TB was replaced, everything ran smoothly. Have not had a problem since.
04-05-2009, 06:05 AM
#19
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Thread Starter
Originally Posted by IlleztImportz,Apr 4 2009, 10:06 PM
so far, plugs/coils changed, injector cleaner, injector changed, no compression test yet though...
04-05-2009, 06:07 AM
#20
Former Moderator
Thread Starter
Originally Posted by Tom_B,Apr 5 2009, 07:39 AM
They immediately diagnosed it with a faulty throttle body sensor; at idle it was sending a incorrect voltage to the ECU. Once the TB was replaced, everything ran smoothly. Have not had a problem since.
But I'll add this to the list since it is easy to check.
