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post #1 of 12 (permalink) Old 01-07-2018, 07:59 AM Thread Starter
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Oil leak

I have a 2006 Cobalt and have a new oil leak on the bottom of the motor do you know what this could be

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post #2 of 12 (permalink) Old 01-07-2018, 09:20 AM
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Probably coming from above, maybe the oil pressure sending unit's diaphragm has failed or a valve cover gasket.

I'm surprised your oil pan isn't leaking, it's got a nice ding.

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post #3 of 12 (permalink) Old 01-07-2018, 10:29 AM Thread Starter
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Is the oil pressure unit the same that RockAuto calls oil temperature unit for $7.29
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post #4 of 12 (permalink) Old 01-07-2018, 10:44 AM Thread Starter
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Or is it AC Delco d 18498 for $11.38 on RockAuto and is this located on the front right above the starter
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post #5 of 12 (permalink) Old 01-07-2018, 12:08 PM
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Is it where it's leaking from? And yes it's on the front above the starter.

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post #6 of 12 (permalink) Old 01-07-2018, 12:39 PM Thread Starter
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There was oil dripping off the starter but I cleaned it all up and change the oil this morning I just drove it 5 miles and there's not oil near the starter only on the bottom in the picture so I don't think the pressure switch is leaking but I can't be sure
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post #7 of 12 (permalink) Old 01-07-2018, 03:15 PM
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Best way is to shampoo the engine and clean as much as you can then take it out for a drive and check it. Did you change the oil before the picture or after?

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post #8 of 12 (permalink) Old 01-07-2018, 04:52 PM Thread Starter
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The picture was after I changed the oil it's fresh oil leaking I'll try the shampoo this week and thanks
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post #9 of 12 (permalink) Old 01-09-2018, 03:09 PM Thread Starter
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Is it possible that oil is leaking at the starter is there a gasket on the starter here's a pic
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post #10 of 12 (permalink) Old 01-09-2018, 04:09 PM
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Possible if the rear main seal was leaking.

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