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2G 4g63t oil leak

14Kingt

Probationary Member
8
0
Sep 5, 2019
Lima, Ohio
I notice after we ran my 95 gsx for a while oil had pooled up on the valve cover where the spark plugs are. I put a new gasket on and it’s still leaking from somewhere. Could the cover have a crack in it?
 

TK's9d2TSi

Supporting Member
4,687
1,950
Sep 11, 2017
Cincinnati, Ohio
I notice after we ran my 95 gsx for a while oil had pooled up on the valve cover where the spark plugs are. I put a new gasket on and it’s still leaking from somewhere. Could the cover have a crack in it?

Could be a crack. They’re super fragile so do not over tighten. OEM gaskets are the best. I’ve read felpro are good as well but I do not have first hand experience with them. Try a generous amount of rtv on the bolt closest to your leak.
 

19Eclipse90

DSM Wiseman
4,902
701
Sep 29, 2003
OKC, Oklahoma
It could be a crack in the cover. It could also be the oil cap gasket or seal.
 

BOOMBOOMGSX

Probationary Member
6
2
Oct 14, 2019
LAS VEGAS, Nevada
I notice after we ran my 95 gsx for a while oil had pooled up on the valve cover where the spark plugs are. I put a new gasket on and it’s still leaking from somewhere. Could the cover have a crack in it?
nah I don't think its anything that major bro. im having same issue just purchased my GSX and it has been sitting for almost a decade. found spark plug cylinder four tube filled with oil after a hard pull on the 215. replace your engine oil cap, the seal is dry rotted and not sealing. Thats where I found oil coming from and it makes sense, also replace you dipstick with a new one. found it leaking from there too. rockauto.com has them both for under $20
 

Dhan

Supporting Member
3,704
134
Apr 29, 2010
Denver, Colorado
Could have a crack in, like already mentioned. There are four round rubber seals that go around the spark plugs too. Are those still in good shape?
 

14Kingt

Probationary Member
8
0
Sep 5, 2019
Lima, Ohio
I changed those like a month ago but didn’t start it up until a week ago.
 

14Kingt

Probationary Member
8
0
Sep 5, 2019
Lima, Ohio
I was going to repaint it anyway. I will look for leaks when it’s cleaned.
 

We're on Boost

Proven Member
1,226
158
Aug 25, 2007
Seattle area, Washington
If the cover itself is cracked it might not be that easy to see. We never saw ours which leaked slowly for years. Thought it was probably a bad gasket. Thought we'd send the cover out for a nice powder coat while it was off for gasket change. Bad idea. The shop that did that never saw the crack either. It leaked same as ever.
Then at English Racing, several years later, same thing, they didn't see it, put the same cover back onto fresh engine. Leaked on the first dyno pull :( !! So they found a good used cover and that fixed it.
If you would like to try some kind of test, google "dye penetrant test for cracked aluminum".
 
Last edited:

PsychoTSI

Probationary Member
2
0
Jul 21, 2019
Harrow, ON_Canada
My 92 TSI sprays oil out the block when I hit 17 PSI or whatever the valve cover is not leaking it's spring for the back of the engine up on to the hood and on to the valve cover check to see if you have any micro fractures around your oil pump because I'm going to have to change a block this year LOL
 
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