now low compression.....

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Feb 16, 2007 | 02:04 PM

runutzzzzz

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now low compression.....

My friends S2K. What happened?

Thanks

Feb 16, 2007 | 06:53 PM

oakfloor

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From: woodland

Quote:

Originally Posted by runutzzzzz,Feb 16 2007, 03:04 PM

My friend overheated is 04 S2K. We took the head it was warped so we had it milled. New headgasket new head bolts... We did a leakdown test and it read low. It was leaking though the exhaust valves and intake valves!!! What happened?

Thanks

Warped , or burned valves. out of adjustment?

Feb 17, 2007 | 11:30 AM

gew5333

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When the head warps there is a good chance the valves don't seat properly anymore. If the machine shop surfaced the head they should have checked this. Ask them if they vacuum checked the valves. If they checked everything properly maybe the valve adjustment is being performed incorrectly.

Feb 18, 2007 | 06:49 PM

runutzzzzz

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Quote:

Originally Posted by gew5333,Feb 17 2007, 12:30 PM

So what do I need to do? Do we need to get new valves?

Feb 19, 2007 | 05:32 AM

snakeeater

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From: Lafayette, LA

Quote:

Originally Posted by runutzzzzz,Feb 18 2007, 09:49 PM

So what do I need to do? Do we need to get new valves?

You need to find out why the leakdown test results are bad. Repeat the test to be sure. Could be a bad mill job on the head or maybe the deck is warped as well. Maybe the head gasket wasn't installed & torqued correctly. Maybe the valves are bent. Lot of 'maybe's. Don't just throw parts at the problem, it's too expensive on this engine.