HELP!! oil leaks under passenger side of my 93 bonneville - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 11-19-2006, 11:27 AM   #1
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Default HELP!! oil leaks under passenger side of my 93 bonneville

Is their a way i can fix it myself? If not is it expensive to get repaired?
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Old 11-19-2006, 11:30 AM   #2
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First off, please put if you own a SE, SLE, SSE, or SSEI. Put that and your year in your signature. Then we can go from there.

And welcome!
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Old 11-19-2006, 11:32 AM   #3
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It would help to know what ya got under the hood

It could be ANY or a combination of the following:

Valve cover gaskets
Oil pan gasket
Oil drain bolt/bolt o-ring
Oil filter o-ring (not likely, but possible)
Oil pressure sending unit (again, not likely but possible)
Oil cooler lines (if you have a supercharged motor)

EDIT:
Could also be timing cover gasket, front oil seal, rear main seal.

Are you certain it'* engine oil? Transmission fluid and power steering fluid, if not changed since...uh, who knows...will look alot like engine oil too.

And Welcome to the club!!
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Old 11-19-2006, 11:46 AM   #4
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93 bonneville se its an oil leak that started a few days ago and now its leakin more n more
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Old 11-19-2006, 11:53 AM   #5
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You'll have to get under it & let us know where it'* coming from.
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Old 11-19-2006, 11:54 AM   #6
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You said oil - then the fuild that your seeing is brown

Does the leaking slown down, stop, or get worse when the car is running?

I am guessing what evryone else said and a possible loose oil plug
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Old 11-19-2006, 11:59 AM   #7
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The FIRST thing you need to do is degrease your motor from top to bottom. Before you can diagnose where a leak is comming from, you need to clean up all old evidence of leakage so you can spot where it is comming from.

Park your car overnight with a cardboard sheet underneath the engine, to make it easier to see where the oil is comming from and how much is actually leaking.

I would say the most likely culprits are the oil pan gasket, the o-ring for the bolt (or the bolt itself is loose), or rear valve cover gasket. Least likely is going to be the pressure sender and timing cover gasket, and "in-between" will be your main seals. Main seals will require extensive dissassembly (rear seal will require the motor to come out).

How many miles are on this motor?
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Old 11-19-2006, 12:00 PM   #8
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i just got under the car, the leak is next to the right front tire i wiped it w/ a towel and it seems to be two different colors brown n black?
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Old 11-19-2006, 12:01 PM   #9
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Default 174,000

Quote:
Originally Posted by sandrock
The FIRST thing you need to do is degrease your motor from top to bottom. Before you can diagnose where a leak is comming from, you need to clean up all old evidence of leakage so you can spot where it is comming from.

Park your car overnight with a cardboard sheet underneath the engine, to make it easier to see where the oil is comming from and how much is actually leaking.

I would say the most likely culprits are the oil pan gasket, the o-ring for the bolt (or the bolt itself is loose), or rear valve cover gasket. Least likely is going to be the pressure sender and timing cover gasket, and "in-between" will be your main seals. Main seals will require extensive dissassembly (rear seal will require the motor to come out).

How many miles are on this motor?
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Old 11-19-2006, 12:08 PM   #10
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the motor has 174,000 miles on it n i just had the harmonic blancer/crank sensor replaced would that have anything 2 do with the leak?
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