Question about 1995 Toyota Previa
A really bad knocking noise at idol speed goes when you rev up
Have the valve clearances checked, it could be tappits noise.....Has the vehicle ever been over heated? How's the power output from the engine, has it changed since you've had the vehicle? Does the sound disappear completely, or is the knocking sped up so it's faster and becomes hidden?
I think that it will be a good idea for you to have a technician listen to the engine, to make sure that you don't have a serious problem. Get two or three opinions
best regards Johngee10
Posted on Sep 03, 2008
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Posted on Jan 02, 2017
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