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Old 08-19-2010, 04:04 PM   #1
Crazy_pilot
Scooby Newbie
 
Member#: 164242
Join Date: Nov 2007
Chapter/Region: E. Canada
Location: Toronto
Vehicle:
1992 SVX
2008 Spec B

Default Changed head gaskets, engine spins like it has no compression.

I pulled the engine out of the SVX and changed the head gaskets. Dropped it back in, tried to start, and the engine spins like it's got no plugs in it. Checked the timing, pulled the valve cover off to make sure the cams are in timing, the valves are moving freely... Lots of fuel, good spark... Yes the plugs are tight.

Thoughts? I'd rather not pull the engine back out.
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Old 08-19-2010, 07:31 PM   #2
GrundleJuice
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Member#: 165749
Join Date: Dec 2007
Chapter/Region: South East
Location: stupid Florida
Vehicle:
2007 No YELLING
on the bus!

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are the valves closing completely? Not firmiliar with the SVX drivetrain, but if there is a lash adj. chk that.
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Old 08-19-2010, 08:15 PM   #3
Crazy_pilot
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Member#: 164242
Join Date: Nov 2007
Chapter/Region: E. Canada
Location: Toronto
Vehicle:
1992 SVX
2008 Spec B

Default

The lash adjusters in the SVX are hydraulic. We popped one valve cover and checked them out, they look to be moving freely with the lobes.

The valvetrain on the EG33 is a bit odd. It's a quad-cam engine, but only the exhausts are driven by the timing belt. There are scissor gears inside the valve covers that drive the intakes off the exhaust cams. Tomorrow will likely involve pulling both valve covers to make sure the valves are synced properly with the pistons.
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Old 08-20-2010, 11:44 AM   #4
vwbugpilot
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Member#: 254120
Join Date: Aug 2010
Chapter/Region: South East
Location: new orleans la
Vehicle:
2004 sti
black

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go back and check the cam timing
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