1999 v70 xc sucked a valve, now what

flyingd · Post by **flyingd** » 05 Nov 2014, 21:14

My turbo xc v70 sucked a valve, now no compression of course.

should I buy a used engine, swap out the head, etc. I am a bit disgusted with it. any ideas.

Post by **jimmy57** » 05 Nov 2014, 21:21

Unless it was idling when it happened and it stopped immediately, the piston and even the connecting rod are likely to be damaged.
A head won't fix that.

Post by **cn90** » 06 Nov 2014, 16:33

I think the O.P. meant a "burnt valve".

Post by **jimmy57** » 06 Nov 2014, 17:13

OK. "sucked" valve has always been used by my peers as a dropped or broken head of valve failure which is usually catastrophic. Burnt valve is not such a big deal.
Burnt valves on these engines is usually cylinder head removal and new valves lapped in as seats rarely get hurt. If the guides are out pf spec then valve guides will need to be replaced. Since it is a 99 you have hydraulic tappets so no valve shims for valve adjustment are needed.

Post by **JimBee** » 07 Nov 2014, 09:29

If this were my engine I'd try to explore any piston damage and whether the valve head really broke off. Some shops have a scope with flexible lead that can be inserted through the plug hole for viewing.

If, as jimmy57 said, the piston is damaged, the rod might also be bent and there's a possibility of cylinder wall gouging. If that's the case the engine probably is not worth repairing.

But if it's only a bent or burnt valve with no other visible damage to the piston crown, then getting the head repaired for a few hundred dollars would be the way to go.