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HELP!! Oil Leak...1999 4X4 2500 SUBURBAN 5.7

72freak

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72freak Enthusiast

72freak

Posted
Posted

I know these 5.7's tend to start leaking at the intake manifold, valve cover gaskets, cooler lines and sometimes rear main.

 

It looks like the consentration of oil is above the starter or in the starter area. All that area is damp and it accumulates on the starter, wire loom tube and on the torque converter cover. I have not taken the torque converter cover off to see if it is the rear main leaking. I have checked the valve cover on that side and it is not that.

 

Has anyone had a similar leak? Unfortunatley it is in a place that you cant see, so I dont know where to start. I would hate to pull the tranny and it be the manifold....and i would hate to pull the intake and it be the rear main.

 

 

 

1999 GMC Suburban, 2500, 4x4, 5.7, 100k miles

 

This post has been up for 2 weeks with so responce...........

I am shocked that all the Vortec owners on here.... no one has had this problem!??!?! From what I hear.....every one of them blows the intake gaskets and leaks oil or coolant or both. Have I heard wrong??????????

 

Well anyway.....I did the intake manifold job today.....we

are letting it sit overnight before we add coolant and run for a long

test time. It took about 5 hours.

 

There was definitely an oil leak at the rear of the intake...all the

silicone gasket material had oozed out and there was little to no seal

in the back.

 

It would not have been long before there was a coolant leak there at

the back left where they all leak....the gasket was shot around that

last port.

 

 

Hopefully this will solve the slight oil leak and we probably

preventerd a cooling problem or head gasket problem or even a craked

head at the same time.

 

After 2 weeks of owning a VORTEC....I have now been inside it

more times than the 1987 with 300k miles on it....

 

YOU GOTTA LOVE PROGRESS!!!!!!!!!!

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