1990 Corolla - why does it keep blowing oil seal out?

130

Asked by Jul 04, 2015 at 02:19 PM about the 1990 Toyota Corolla Base

Question type: Maintenance & Repair

4 cyl a/t. It keeps blowing the front seal.

11 Answers

Front main engine? Probably worn out main crank bearing. Just a tiny wobble on that bearing will blow seal

1 people found this helpful.

1.6L- 4A FE Trying to find solution.....

1 people found this helpful.

Whoops. My mistake. The main is back further that I thought. So Best guess is opening for seal in timing cover may not be perfectly round, may need a timing cover. Click for full screen

2 people found this helpful.
130

Thank you. I was leaning toward oil pump. Never ran into this problem before.

1 people found this helpful.

This is just a guess, but all I can think of

Tell me why you say oil pump. I am not a know-it-all. Might learn something

130

It's a start, thanks so much!

Best of Luck tuari. Let us know, eh

65,515

Groove in the damper that the seal runs on or excessive crankcase pressure can cause the front seal to fail.

2 people found this helpful.

My Man. Bob. Makes perfect sense. Stuck PCV and blow-by from a 1990 with worn rings = pressure in crankcase

1 people found this helpful.
65,515

Seal could be installed backwards also.

1 people found this helpful.

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