Engine Mechanical problem
1996 Toyota Previa 4 cyl Two Wheel Drive Automatic 135000 miles
1996 Toyota Previa SC knocking after head gasket job.
It did not not knock at all when it came in.
Had blown head gasket between 2 cylinders and ran well but had rough idle before changing head gasket.
Had a professional rebuild the head.
Put together and it runs smooth except loud knocking.
Bore-scoped and found no debris.
Power-balance test comes out even.
Checked rod bearings they were fine.
It runs and idles fine.
It only knocks while running not while being rotated without plugs.
Thanks for any help.
Friday, June 4th, 2010 AT 2:06 PM