Compression

D

DRUNK411

Member
How much comression are these trucks supposed to have, stock motor and turbo. I want to do a comression check on my engine before I rip the turbo out to make sure that I don't have a bad head gasket before hand. Thanks in advance!
 
WyoSyclone

WyoSyclone

Active member
Re: Compression

I measured mine a few weeks ago.... was right at 169 to 170 on all six. Stock internals rebuilt to stock specs about 800 miles ago.
 
dgoodhue

dgoodhue

BuSTeD 4.3
Re: Compression

Around 160 is often what I see for compression, but its very rare to blow the stock headgasket on a stock motor (usually the piston or rods give out first) The quick and easy test the intenals is to pull the oil fill cap and feel if air is pushing out with the motor running.
 
D

DRUNK411

Member
Re: Compression

No there is no blow by I checked that already, so I am leaning towards turbo for the smoking problem, but I pulled the air filet and crossover and tried to move the turbine around and there was no play in it. But it is blowing white smoke, so I am thinking either turbo or head gasket. Let me know if you guys have any other ideas.
 
D

DRUNK411

Member
Re: Compression

I was told it is either coolant or oil? Black is fuel I believe. That is why I am going for a compression check to see if I blew a head gasket on the truck. Anyone have any other ideas of what to check?
 
sly dvl

sly dvl

Ya, it's got a Turbo
Re: Compression

White smoke indicates coolant (or water), blue smoke is oil and black is fuel.
Open your rad cap (cold) and run the engine to see if there are any bubbles showing up in your cooling system. It's a crude test but it's a start.
 
D

DRUNK411

Member
Re: Compression

Cool I will try that today, The smoke is a blueish white though. But I will definatly try that and check the compression today on the truck.
 
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