How much would a Head Gasket job for an LB7 cost in a general Ball park? I think they're shot and I'm just trying to get an idea. IF there was more damage how much would an entire replacment engine cost?
Head gasket$$?
- Thread starter aggar
- Start date
i believe the gm spec is anythign over .003" and you need a new head. I just installed 2 new heads because of this(warranty). Guy at SocalDiesel can resurface them. He will also reseat the valves for proper piston to valve clearance.
If I could find a replacement for cheaper than the HG job should I drop it in, especially if it's a lower mileage motor? This one has 140k on it and about 1k on the injectors.
Well went out and checked the oil. about 2 inches overfull but can't smell the coolant, maybe oil smell is stronger than coolant? Still had pressure under the overflow cap. Shut the truck off friday night at about 11pm and it's sat since then. Have not tried starting it. Should I try run it up on a trailer or have it towed?
a short running up a trailer shouldn't hurt. Any damage done won't be affected by a quick drive up some ramps...
a tow would be the absolute safest bet though....
Are you sure its not fuel in the oil? Usually don't get coolant in the oil on a Duramax. Usually bad head gaskets will leak externally or put compression in the cooling system. Did they change the oil after the injector job?
i agree !
i did not realize LB7, i saw the LBZ in your sig and i thought i saw that in your post. Possibly injector issues with overfilled oil !
When I go the truck Oil looked new. Injectors were done before i got it. Right now it has 140,5xx on it and they were done at 139,4xx. So I am stumped. I'm gonna go out and loosen the drain plug to see what comes out first.
pull the dipstick
let a drip fall on a piece of paper
if you get a quick outer ring then it's diesel in with oil. A seal could be leaking too. Could be related to the injector job.
let a drip fall on a piece of paper
if you get a quick outer ring then it's diesel in with oil. A seal could be leaking too. Could be related to the injector job.
Yep looks like maybe 1000 miles on it. I'm guessing when the injectors were done they changed it. But I dunno.
Cracked the drain plug and oil ran out. It's 20* today and the truck has been sitting since Friday night. Only opened the drain plug about half a turn. The oil should've been thicker than what it was.
do the dipstick test.
it's gotta be fuel. fuel in the oil cleans up everything real well. Your oil should be black.
it's gotta be fuel. fuel in the oil cleans up everything real well. Your oil should be black.
I did the dipstick test and it started out to separate. the oil running out the bottom was black but not on the dipstick.