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05-09-2014 | #1 |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Oil Leak
what pieces/locations tend to leak oil?
I have replaced the breather box gasket (under plenum) from what I can tell the Oil sensors are not leaking. The cooler hose looks to not be leaking, but I will confirm it.. I have some oil under the car still looks like it is coming from the front of the motor, all the pan bolts I can get to are quite tight, I guess it cold be te forward most pan bolts, but hard to see, the motor is quite grimy and I am not sure the best way to get to there to clean it.. it is not leak a huge amount but anything is more than I would like suggestions on what to check. best way to clean it?
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
05-09-2014 | #2 |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
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Re: Oil Leak
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05-09-2014 | #3 |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: Oil Leak
Oh yeah.. forgot about that guy..
so how do you get to it with the motor in the car?
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
05-09-2014 | #4 |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
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Re: Oil Leak
In the link I recognized the tight space and ended up just removing one bolt at a time and applying blue locktite and then tightening them by feel. As I recall it was from the top that I gained space enough to get an open end wrench in that tight space. I guess I would have used red Loctite if I thought the fix was going to work as good as it did (NO MORE LEAKS).
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Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 05-09-2014 at 04:45 PM. |
05-09-2014 | #5 |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: Oil Leak
Ah from the top.. was that all you removed was the tensioner? coolant tubes are not in the way?
not looking forward to this one..
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
05-09-2014 | #6 | |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
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Re: Oil Leak
Quote:
I just looked at my 90' and I am sure I did NOT remove the belt tensioner. I did not remove the plate or gasket but removed each bolt one at a time and then installed the first bolt before I removed the second. Again...I would clean the bolt with on a wire wheel and use red Loctite. I have SW Headers so my situation may be different than yours regarding the exhaust manifold being an issue. I Cannot see the OPRV cover plate on my 90' as there is a wire harness in the way. But I am sure I squeezed down just in front of the Oil Filter housing and behind the radiator hose. I noticed you might gain room by removing the passenger side inner wheel panel and see if you can get to the OPRV valve cover under the right cam cover.
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Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 05-09-2014 at 04:52 PM. |
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05-09-2014 | #7 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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Re: Oil Leak
Jeff,
Is it passenger side or driver?
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
05-09-2014 | #8 |
Join Date: Feb 2010
Location: Jacksonville,FL
Posts: 242
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Re: Oil Leak
I believe you may have the oil pressure switch leak. Look between the oil filter and the engine.Down about 10 inches. There is a 1 wire plug attached to it. It is a common leak that shows up at the back of the right side of cross member under engine.
If its all oiled up spray with brake cleaner and see if fresh oil appears. Just replaced mine last week.
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Gary 90-1572 |
05-09-2014 | #9 |
Join Date: Feb 2010
Location: Jacksonville,FL
Posts: 242
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Re: Oil Leak
Dynomite, what
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Gary 90-1572 |
05-09-2014 | #10 |
Join Date: Feb 2010
Location: Jacksonville,FL
Posts: 242
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Re: Oil Leak
is that brass piece that your oil pressure switch is screwed into?
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Gary 90-1572 |
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