oil leak 1991 ZR-1 - ZR-1 Net Registry Forums

mhull · 04-12-2007

My 1991 ZR-1 has an oil leak on the driver's side of the engine. It doesn't leak onto the floor but does smell like it's burning when the car is warm. Could this be a cam sensor o-ring or possibly a bad head gasket? I am not a mechanic and would like to diagnose the situation. Thanks for any assistance in this matter!

Kevin · 04-12-2007

where on the DS of the engine? near the front of the block or near the middle, back?

mhull · 04-12-2007

Hi Kevin!

Thanks for your quick reply. The leak is near the middle to back section of the block. I had my tech look at it and he was concerned that it may be serious. I think there may be some antifreeze mixed in with the oil. I love the car but hope it doesn't turn out to be a rear seal. That would be really expensive I would imagine.

Mark

Kevin · 04-12-2007

Mark,
Does it seem to be coming out of the exhaust manifold?

mhull · 04-13-2007

Kevin,

It's difficult to see exactly where it is leaking. Possibly the header stud? I have been reading too many of the technical posts so there is a lot of guessing on my part. I am going to study it again tomorrow with a better light.

Mark

Kevin · 04-13-2007

If it's leaking out of the header bolt it's no big deal and a relatively common problem. Remove the stud, RTV it, reapply

LGAFF · 04-13-2007

Cam sensor, see my reply on repairs:

I have a Small Leak..Drip Drip Where Be The Leak? ( 1 2)
Lowflight

Lgaff
1992 ZR1
#234

04-12-2007	#1
mhull Join Date: Apr 2007 Location: New York Posts: 31	oil leak 1991 ZR-1 My 1991 ZR-1 has an oil leak on the driver's side of the engine. It doesn't leak onto the floor but does smell like it's burning when the car is warm. Could this be a cam sensor o-ring or possibly a bad head gasket? I am not a mechanic and would like to diagnose the situation. Thanks for any assistance in this matter!

04-12-2007	#3
mhull Join Date: Apr 2007 Location: New York Posts: 31	Re: oil leak 1991 ZR-1 Hi Kevin! Thanks for your quick reply. The leak is near the middle to back section of the block. I had my tech look at it and he was concerned that it may be serious. I think there may be some antifreeze mixed in with the oil. I love the car but hope it doesn't turn out to be a rear seal. That would be really expensive I would imagine. Mark Last edited by mhull; 04-13-2007 at 11:24 AM.

04-12-2007	#4
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,632	Re: oil leak 1991 ZR-1 Mark, Does it seem to be coming out of the exhaust manifold? __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"

04-13-2007	#5
mhull Join Date: Apr 2007 Location: New York Posts: 31	Re: oil leak 1991 ZR-1 Kevin, It's difficult to see exactly where it is leaking. Possibly the header stud? I have been reading too many of the technical posts so there is a lot of guessing on my part. I am going to study it again tomorrow with a better light. Mark

04-13-2007	#6
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,632	Re: oil leak 1991 ZR-1 If it's leaking out of the header bolt it's no big deal and a relatively common problem. Remove the stud, RTV it, reapply __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"

04-12-2007	#2
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,632	Re: oil leak 1991 ZR-1 where on the DS of the engine? near the front of the block or near the middle, back? __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"

04-13-2007	#7
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: oil leak 1991 ZR-1 Cam sensor, see my reply on repairs: I have a Small Leak..Drip Drip Where Be The Leak? ( 1 2) Lowflight Lgaff 1992 ZR1 #234

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