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Corvette C4 Forum 1984 through 1996

anyone have oil leak prob with their C4

  #1  
Old 03-23-2006, 10:39 AM
Thread Starter
Join Date: Mar 2006
Posts: 2
Default anyone have oil leak prob with their C4

I have a 96 and It has like 30000 on it but it sat alot previous owner drove occasionally he was out of town alot, anyways Ive replaced all but the main seal and still I have a leak, is this a problem for anyone else??
 
  #2  
Old 03-23-2006, 11:46 AM
Join Date: Nov 2005
Posts: 67
Default RE: anyone have oil leak prob with their C4

I had a similar problem with my 92. If you are seeing a small drop or two of oil every now and then, could be the intake manifold gasket. The local Corvette "guru" diagnosed my leak. Hope this helps.
 
  #3  
Old 03-23-2006, 08:53 PM
Join Date: Mar 2006
Location: deltona fl, 32738
Posts: 1,162
Default RE: anyone have oil leak prob with their C4

i havea 92 and when i got it it left nickle size drops.check all senders in the block.for leaks.check valve cover bolts,the problem with centerbolt valve covers,[ stock] is you can only tourq them so much,and they like to leak,check the front and back of intake manifold. for leaks,check your oil filter,ifthe back of your block and converter is dry it is not the rear seal,check rack,check power stearing pump and lines, ..............and how much oil is on the ground?does it leak when the motor is off,,,or running,,,,

[IMG]local://upfiles/1664/FCD844B6F2E94454A492A73111CC1DE5.jpg[/IMG]
 
  #4  
Old 03-26-2006, 01:22 AM
Join Date: Mar 2006
Posts: 6
Default RE: anyone have oil leak prob with their C4

I have a 93 ,it had a oil leak that looked like it was comming from the rear main seal , but in fact it was comming out of the oil filter adapter. try to remove the filter and adapter and replce the seal.. hope this helps[IMG][/IMG]
 
  #5  
Old 03-27-2006, 03:19 AM
Join Date: Sep 2005
Posts: 406
Default RE: anyone have oil leak prob with their C4


ORIGINAL: redvet

I had a similar problem with my 92. If you are seeing a small drop or two of oil every now and then, could be the intake manifold gasket. The local Corvette "guru" diagnosed my leak. Hope this helps.
I definately agree that i may be the intake manifold gasket, or perhaps the sealant on the ends is bad.
 
  #6  
Old 03-27-2006, 03:41 PM
Join Date: Mar 2006
Posts: 3
Default RE: anyone have oil leak prob with their C4

I have an oil leak in my 1991 L98 I can't figure out. It only leaks when you drive the car. I get oil all over the top half of the right hand side of the motor next to the rear vavle cover (passengerside firewall). Oil is sprayed all over the engine compartment and I cant figure it out. I haved replaced the engine valve covers. I have checked the heads for warpage. They are okay. Does anyone have any ideas. It does not leak whne the car is at idel, but it not under pressure that way. The PCV vavle is working. Any ideas????
 
  #7  
Old 03-27-2006, 05:16 PM
Join Date: Mar 2006
Location: deltona fl, 32738
Posts: 1,162
Default RE: anyone have oil leak prob with their C4

sound like a intake manifold gasket,when you gas the car it builds oil press,60 psi so if your intake gaskets are leaking the oil will blow thrue the gasket,leave the car running and the open hood, pull throttle by hand and check were it is coming out from.first clean the top of the motor off so you will spot the leak easy,do you have any blow by coming from the top pvc valve, if it is on top of your motor it can be only somany things,valve covers,intak,sender on intake manifold, check your gaskets up top,
 
  #8  
Old 07-02-2019, 05:35 AM
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Join Date: Jul 2019
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Default

I also have a C4 with an oil leak that I'm trying to track down. It looks like its between the tranny and the bellhousing. The oil level is always right on the mark. I think it may be tranny oil. Maybe a front tranny seal????
 
  #9  
Old 07-07-2019, 08:40 PM
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Location: FLORIDA
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I have rebuilt many 350's and they are notorious for rear main seals and oil pan leaks
 
  #10  
Old 07-07-2019, 08:42 PM
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if its red then you are 100% correct sir
 

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