1998 5.7L Vortec-internal coolant leak into oil
#1
1998 5.7L Vortec-internal coolant leak into oil
I guess I have a pretty common problem with this engine, coolant leaking into the oil. Is there any way to tell if the cause is a head gasket vs. an intake gasket? A coolant stop-leak will usually fix the problem for up to six months or so, then it reappears. It's time to address the problem. Thanks for your help.
#2
CF Active Member
Do a coolant pressure check and a compression check of the cylinders. If the coolant test loses pressure there is probably a loss of coolant from the intake. If the coolant pressure test is good and you have a substantial difference during the compression check of the cylinders then you have a head gasket leak. Is there a white milky substance in the oil? My first impression is a leaking intake gasket. Just replaced my intake due to a leaking gasket, but it was an external leak not internal.
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Eric Sherden
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September 24th, 2013 1:21 PM