Intermittent rough idle in 95 accord LX - Drive Accord Honda Forums
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post #1 of 3 Old 05-26-2012, 05:40 PM Thread Starter
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Intermittent rough idle in 95 accord LX

When cold in the am car starts fine, after about ten or twenty minutes it develops an intermittent rough idle that gets worse as the day progresses only to get better the next morning when cold. Exhaust note changes to a hollow sound like post ignition and there is some exhaust blow out at the first gasket when the idle is rough. When running fine no exhaust leak. Runs fine at highway speeds but idle will drop to almost nothing at the end of exit ramps, sometimes stalls as rpms come down at stops. Car will shudder when starting on a hill or starting fast (manual trans) unless I rev it up more than normal. Exhaust smells rich but no rotten egg smell. New plugs, wires, cap, ignition control module, rotor, coil, throttle position sensor, cleaned IAC valve. Running out of parts and in need of some diagnostic advise.

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post #2 of 3 Old 06-02-2012, 10:32 AM Thread Starter
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Update to this thread

With no input from anyone here at drive I took my car to a honda shop. They listened to it for a minute and then said valves and an intake cleaning with some special machine they have. They mentioned the valves like to be at .008" and .010" which is odd because the sticker under the hood states .26mm and .30mm with a .02 tolerance. The shop is quite a bit tighter then the official Honda spec. They also thought the valves where loud but when I checked them none where very far out. I reset all to the middle of the range on the sticker and still there is a bit of valve noise. Any thoughts?

Thanks, Dave

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post #3 of 3 Old 06-06-2012, 10:25 AM
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Maybe you bent a valve.

1991 Honda Accord EX
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