Mild Vibration

kovacsa · Post by **kovacsa** » Sun Mar 02, 2003 5:19 pm

Hello All ... Looking for some advise is anyone has any to offer.

I bought a used '92 Accord and have been having this vibration problem that I can't quite put my finger on, as to exactly what might be causing it.

There is a mild vibration at idle. This mild vibration only happens after the car has been driven for a bit. The funny thing is ... when the engine is first turned over in the morning its fine .. only after driving for a bit.

I've replaced the spark plugs (which were well out of spec), dist cap, rotor and have just today added fuel system cleaner (expensive).

Anyhow ... after this tune-up there was an improvement .. but not to my satisfaction. The vibration is mild yet quite annoying while idling.

Any insight?

Thanks,

Al

JT · Post by JT » Sun Mar 02, 2003 6:28 pm

You can try verify ignition timing, the condition of plug wires, valve clearance, pcv valve, and the possibility of a vacuum leak due to disconneted hoses. Since it's an older car, perhaps a compression test can review any potential problems. Also, inspect the motor mounts to make sure they are not damaged.

kovacsa · Post by **kovacsa** » Sun Mar 02, 2003 7:43 pm

Hey JT ... thanks for the suggestion. What exactly is involved in the compression test?

Thanks again,

Al

JT · Post by JT » Sun Mar 02, 2003 9:57 pm

Hey Al,
Here is a link on how to do a compression test. HTH...

http://www.c-speedracing.com/howto/comp ... mptest.php

oscarmayer · Post by **oscarmayer** » Fri Mar 21, 2003 10:52 am

also check to see the idle rpm. if it is too low, it can cause a vib meaning the car is just fighting to run. your idle should be around 750-850 for standard and 850-900 for auto.