did a compression test at work today

tomseal6

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May 25, 2003
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Well its a 93 6.5L turbo dieslel GMC truck

it blew 150 LB on CYL #1 and 320 on the rest on the driver side bank.

I have to take the turbo off tomorrow to test the other side. Its kinda in the way. The motor is making some awful noises so I am wondering if I should pull a brand new engine out of the warehouse since there is 10 of them back there.

Truck has 140,000 miles.

Those 6.2/6.5L GM diesels in my opinion are a sorry excuse for a diesel engine.
 

Yep...most likely a cracked cylinder if its turboed...if your lucky it may just be a valve on that cylinder...any anti freeze on the oil dipstick or does the exhaust smell sweet...
 
pulled the heads today.

with pistons at TDC, the piston rocks back and fourth in its bore.

Its pretty bad, like nothing I have ever seen. The truck is going to scrap center.
 


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