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OIL LEAK; poss rear main leak
Topic Started: May 17 2013, 12:10 PM (448 Views)
97GEODRIVER
Member
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Hi,, just got my geo and been wathing the oil level, seems to be losing or using, got under neath and only found one wet spot, on trans around passenger
axle boot, looks like engine oil ?
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97GEODRIVER
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or could it be blow by I think it might be oil change time.
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Deleted User
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I have seen exactly one rear main crankshaft seal that was deteriorated to the point where it would leak.

Axle seals are a more common failure. Clean the area and take another look in a few miles.

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Hogleg
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Geo Glenn
May 17 2013, 12:59 PM
I have seen exactly one rear main crankshaft seal that was deteriorated to the point where it would leak.

Thats good to hear hopefully wont have a problem on the vert. That one you seen must have been on my old 98 hatch... That thing would lose a quart a week out the rear main. Although It was a salvaged job out of Michigan.
Edited by Hogleg, May 17 2013, 01:25 PM.
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Old Man


97GEODRIVER
May 17 2013, 12:10 PM
Hi,, just got my geo and been wathing the oil level, seems to be losing or using, got under neath and only found one wet spot, on trans around passenger
axle boot, looks like engine oil ?

It doesn't take much oil leaking there for it to seem like a lot of oil.

97GEODRIVER
May 17 2013, 12:22 PM
or could it be blow by I think it might be oil change time.

first check your PCV valve and its hoses to see if it is clogged with oil and check the inside bottom of your air cleaner houseing to see if oil is there. -- clean the valve, hoses and housing clear of oil.
second do a compression check to see the condition of the rings and valves.
do an oil change and keep track of how much oil is being used or lost per mileage.

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97GEODRIVER
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Air cleaner is clean, no oil,, changing oil tomorrow,, used to have a chrysler that blew oil when it was time to change, do geos do this? just a thought
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cwatkin


If your air cleaner housing is clean of oil, you are not blowing oil. If this was the case, the sputtering and mosquito fogger smokescreen would catch your attention. I had one with lots of blowby that smoked and burned oil like nothing else. I swapped the motor with another and that problem is gone.

My distributor O-ring was leaking and dumping oil to where it ran down under the transmission. It was definitely engine oil and replacing the O-ring solved this. I also had a distributor where the internal seal was leaking and it would drip out between the distributor and cap around the same time.

Conor
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