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Old 03-25-2010, 06:15 PM
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RobH2 RobH2 is offline
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Tenders,

I'm afraid that you may be correct. I've diligently followed everyone's suggestions here and they have been great.

Here's what I did today:

1. I pulled the exhaust pipe off of the manifold for a look. The bolts are new and the pipe (which was wrapped) turned out to also be new. It was absolutely clean and shiny. So I've now eliminated the exhaust.

2. I pulled the valve cover and set all the valve clearances. I was a bit encouraged when I found that cyl 1 and cyl 2 had no clearance. Once set I figured I'd found the issue...that the valves weren't able to close all the way.

3. I rotated the crankshaft and watched all the valves moving very nicely up and down. All the springs were intact and looked fine.

So, I put my new compression gauge on cyl 1 and cranked the engine. No compression at all. Disappointment led to despair when I put the gauge on cyl 2...no compression. I then hooked the coil back up actually started the engine testing all the cylinders. My results are below:

Test 1 (turning engine over with starter only - no starting):
Compression -- 1=0, 2=0, 3=100, 4=110.

Test 2 (start and run engine):
Compression -- 1=60, 2=95, 3=95, 4=100.

Turning the engine over with the starter gave me no compression in cyl 1 or cyl 2 but firing the engine up did. I did realize that the initial compression on cyl 1 and cyl 2 were false for sustained compression. Upon fire-up they peaked at 60 and 95 respectively but if I purged the gauge while running they dropped and settled in at 30 and 45 at 800RPM. At 2800 RPM they showed 60 and 70.

I think I'm getting some overheating too. I have a laser thermometer and it showed the temp in the center of the head between cyl 2 and cyl 3 at 197 degrees.

So what do you guys think? Is my head gasket blown between cyl 1 and cyl 2? I'll go read about that task now but look forward to your diagnoses after you read my tests.

Thanks,

Rob
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