i have a 1988 4-wd toyota pick-up with a v-6. i suudenly lost all compression on one side of...

penetentiary_steel2003 · 28 Jun 2010, 10:05 pm

...the motor!? there was no strange noises, i checked and replaced the timing belt but no change for the better! what do i look look for now? or where do i start before having to take the head off?

pbleek · 28 Jun 2010, 10:07 pm

Bad compression on one bank of cylinders, I would suspect a head gasket or a cracked head. Bad valve or a hole in a piston would affect only one cylinder. I think you need to take off the head.

arlanymor · 28 Jun 2010, 10:13 pm

No compression on 3 cylinders--nothing? or low compression?Check the centre induction gasket between the 2 heads and then the head gasket.But why you would loose compression on 3 cyls with a head gasket fault is baffling unless it,s blown in 2 places and even then you would have some compression.I think you are pulling our leg

Steveo · 28 Jun 2010, 10:17 pm

My guess is you have a bad crank. That or all 3 pistons failed. Are the pistons moving? How about the valves, are they opening?

kelly_f_1999 · 28 Jun 2010, 10:19 pm

if you lost compression on all on one side you need to remove heads and have them check and replace head gaskets

don r · 28 Jun 2010, 10:23 pm

Either the valve timing is wrong on that side or the valves are bent because the valve timing was wrong. At any rate, you will have to look inside- either with a borescope or take the head off. You can get a video borescope at HomeDepot for $250. You can have a shop remove and replace the head for about $1000. Repairing the valves will be extra. I think the valve timing is off, is most likely.

Johnny Rotten · 28 Jun 2010, 10:25 pm

With all the early v6 engines toyota had problems.There have been a number of factory recalls with them.Call your local dealer and tell them the problem,they will be able to help you out..I think you could get a new motor for free!!!

Tom M · 28 Jun 2010, 10:27 pm

don r is on the right track. The problem has something to do with valve timing.

i have a 1988 4-wd toyota pick-up with a v-6. i suudenly lost all compression on one side of...

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