91 Chevy Lumina Euro 3.1 litre

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  #1  
Old 01-23-03, 07:13 AM
thickey1
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Unhappy 91 Chevy Lumina Euro 3.1 litre

91 Chevy lumina euro stated to leak oil. Looks like the oil is coming from the left and rear of the engine compartment. Any ideas
 
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  #2  
Old 01-23-03, 09:31 AM
Joe_F
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There's usually a plug where the distributor would be. Common leak point on the 3.1
 
  #3  
Old 01-23-03, 11:33 AM
redneck
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Yep, most likely, I've done three of them now. Look directly under the throttle body. There will be a plug there. You will have to remove the throttle body, etc to get to it. You can replace the O-ring, but it will eventually leak again, I just blue RTV that sucker and it never leaks again!
 
  #4  
Old 01-23-03, 04:38 PM
kevin18
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I don't know about your oil leak but I feel sorry for you it took me 2 days to put a thermostat on a 3.1 and it was'nt fun man. every mechanic around here has told me to trade it in asap and in the last post i made about the thermostat on the 3.1 alot of people told me they had nothing but problems out of them so........
 
  #5  
Old 01-23-03, 06:04 PM
msargent's Avatar
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General info..We have several customers at where I work who have cars with the 3.1 in them and have 150k-200k miles on them..Yes the intake gaskets have had to be changes, along with the oil pump drive o-ring, but other than that, they've lasted well, and performed well for these customers.
My cent worth...
 
  #6  
Old 01-24-03, 07:17 AM
redneck
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I have had 3 such cars, two were 3.1's and one a 2.8. Never had any problems with them (major) 120k on the 2.8, 170k one 3.1 and my current work car 140k. All cars were running strong when I sold them. T-stat, my current '91 3.1 is easy! I have owned many work beaters---and for the power they produce along with the fuel mileage--you can't beat the GM v6's. And the 1990 and later bodies really hold up well--my '91 berreta does not have a spot of rust on it and paint is original--and I run it every winter here in the rust belt--in fact it still has the original exhuast system on it!
 
  #7  
Old 01-24-03, 07:40 AM
Joe_F
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Yes, 3.1 engines are pretty robust. They are rough and crude, but get the job done. Most GM powertrains do .
 
  #8  
Old 01-24-03, 03:04 PM
redneck
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Just popped the hood on my '91 3.1L, just cause I do so little work on it that I wanted to be sure--the thermostat is a 15 min. job!
 
  #9  
Old 01-25-03, 02:12 AM
thickey1
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Smile t-stat 3.1 euro

Thanks thats what it looks like to me.
 
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