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Mazda motor

Tiny
VERNON BATT
  • MEMBER
  • 1983 MAZDA 626
  • 4 CYL
  • FWD
  • MANUAL
I have a oil leak in the overhead cam front bearing. Is there any way to seal it? Local garage says they don't know of a way. Love the car, want to keep it.
Saturday, November 27th, 2010 AT 2:16 PM

3 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Where exactly is the leak coming from?

Valve cover gasket?
Camshaft oil seal?
Bearing/oilseal cap?
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Saturday, November 27th, 2010 AT 3:19 PM
Tiny
VERNON BATT
  • MEMBER
  • 2 POSTS
Oil leak is in the camshaft front seal. Thanks
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Monday, November 29th, 2010 AT 7:04 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
The usual cause for seals to leak at the camshaft would be throught the seals. Over time, the seal would wear the seats leaving a groove and the seal lips would not be able to seal properly.

To eliminate the problem you can :

1. Install the new seal slightly in or out to prevent the seal lips to be seated on a flat unworn area.
2. Replace the camshaft.
3. Install a new cone on the seal seats, can be done by engineering shops.
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Tuesday, November 30th, 2010 AT 1:10 PM

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