Oil leak - ZR-1 Net Registry Forums

hiperf406 · 12-27-2010

I have a oil leak on the passengers side of my 91 ZR1, when I start my car there is a oil burning smell. The car sat for 6 mo & there is a fair puddle under the car. I don't know if the cam covers have a gasket in them or not, if so is it a big job to replace .TIA.
lorne #1748

sammy · 12-27-2010

other things it could be is the oil pressure switch,either the top one or the one thats a pia to get to on the bottem side of the oil filter housing or the oil filter housing gasket itself as well as the lines to the oil cooler . you need to take your time with a good light and you should find it .oh one other common area is the oil pan bolts have a tendancy to be loose .hope this helps

ScottZ95ZR1 · 12-27-2010

I'd suggest starting with a check of your exhaust manifold studs Lorne.
A common issue with a simple fix - check item #20 here: http://www.zr1netregistry.com/ZR1_issues.htm#20

tccrab · 12-27-2010

My bet is on the Oil Cooler Hoses.
Check where the metal portion is crimped to the rubber part of the hoses.
If your finger comes away wet, there's your smoking gun.

TomC
'Crabs

Kevin · 12-27-2010

Quote:

Originally Posted by tccrab

My bet is on the Oil Cooler Hoses.
Check where the metal portion is crimped to the rubber part of the hoses.
If your finger comes away wet, there's your smoking gun.

TomC
'Crabs

this

Jim Nolan · 12-28-2010

Sounds like oil cooler hoses to me. I had the exact problem. Good luck changing them. I don't there is any way you can change those without making a mess, no matter how many rags you use.

flyin ryan · 12-28-2010

Quote:

Originally Posted by Jim Nolan

I don't there is any way you can change those without making a mess, no matter how many rags you use.

True story...

hiperf406 · 12-28-2010

Thanks everybody I'll check the oil cooler lines first. Are the lines available from GM or does someone sell hem on the forum. lorne #1748

ScottZ95ZR1 · 12-28-2010

NLA at GM but Jerry has them: http://jerrysgaskets.com/store2/root...b684ee0e812e25

hiperf406 · 12-28-2010

Checked cooler lines & filter neither show any sign of oil leaking. Will check oil pressure senders as I have noticed my oil pressure bouncing around. lorne

12-27-2010	#3
ScottZ95ZR1 Join Date: Mar 2008 Location: Pendleton, IN Posts: 674	Re: Oil leak I'd suggest starting with a check of your exhaust manifold studs Lorne. A common issue with a simple fix - check item #20 here: http://www.zr1netregistry.com/ZR1_issues.htm#20

12-27-2010	#4
tccrab Join Date: Oct 2004 Location: Folsom CA Posts: 1,663	Re: Oil leak My bet is on the Oil Cooler Hoses. Check where the metal portion is crimped to the rubber part of the hoses. If your finger comes away wet, there's your smoking gun. TomC 'Crabs

12-28-2010	#6
Jim Nolan Join Date: Jan 2007 Location: Florida Posts: 240	Re: Oil leak Sounds like oil cooler hoses to me. I had the exact problem. Good luck changing them. I don't there is any way you can change those without making a mess, no matter how many rags you use.

12-28-2010	#8
hiperf406 Join Date: Apr 2007 Location: Spruce Grove Oilberta/In Mex for winter Posts: 1,045	Re: Oil leak Thanks everybody I'll check the oil cooler lines first. Are the lines available from GM or does someone sell hem on the forum. lorne #1748 __________________ lorne # 1748 Stock except for a modified Corsa exhaust. When the flag drops the bull sh1t stops! Last edited by hiperf406; 12-28-2010 at 12:40 PM.

12-28-2010	#9
ScottZ95ZR1 Join Date: Mar 2008 Location: Pendleton, IN Posts: 674	Re: Oil leak NLA at GM but Jerry has them: http://jerrysgaskets.com/store2/root...b684ee0e812e25

12-27-2010	#1
hiperf406 Join Date: Apr 2007 Location: Spruce Grove Oilberta/In Mex for winter Posts: 1,045	Oil leak I have a oil leak on the passengers side of my 91 ZR1, when I start my car there is a oil burning smell. The car sat for 6 mo & there is a fair puddle under the car. I don't know if the cam covers have a gasket in them or not, if so is it a big job to replace .TIA. lorne #1748 __________________ lorne # 1748 Stock except for a modified Corsa exhaust. When the flag drops the bull sh1t stops!

12-27-2010	#2
sammy Join Date: Jun 2010 Location: Lone Pine, CA Posts: 580	Re: Oil leak other things it could be is the oil pressure switch,either the top one or the one thats a pia to get to on the bottem side of the oil filter housing or the oil filter housing gasket itself as well as the lines to the oil cooler . you need to take your time with a good light and you should find it .oh one other common area is the oil pan bolts have a tendancy to be loose .hope this helps

12-28-2010	#10
hiperf406 Join Date: Apr 2007 Location: Spruce Grove Oilberta/In Mex for winter Posts: 1,045	Re: Oil leak Checked cooler lines & filter neither show any sign of oil leaking. Will check oil pressure senders as I have noticed my oil pressure bouncing around. lorne __________________ lorne # 1748 Stock except for a modified Corsa exhaust. When the flag drops the bull sh1t stops! Last edited by hiperf406; 12-28-2010 at 01:16 PM.