Cylinder #5 Misfire

Rickyboy1958 · #1 12-13-2010, 12:30 AM

I have a 1999 5.7L Suburban that has an engine problem. First off, I'm losing coolant and it is not leaking externally. Second it has a misfire on cylinder #5. The spark plug shows good spark, so the cylinder is getting electricity. Compression is 105 psi and #1 cylinder compression is 190psi. Is it a blown head gasket or something else?

j cAT · #2 12-14-2010, 05:35 PM

Quote:

Originally Posted by Rickyboy1958

I have a 1999 5.7L Suburban that has an engine problem. First off, I'm losing coolant and it is not leaking externally. Second it has a misfire on cylinder #5. The spark plug shows good spark, so the cylinder is getting electricity. Compression is 105 psi and #1 cylinder compression is 190psi. Is it a blown head gasket or something else?

remove valve cover could be cracked head..or a head gasket.

compression check says its loosing #5 cylinder psi..

what coolant do you use ?

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