mazda motor

1983 MAZDA 626
4 CYL • FWD • MANUAL
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VERNON BATT
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  • 2 POSTS
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.
Nov 27, 2010 at 6:16 AM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
Where exactly is the leak coming from?

Valve cover gasket?
Camshaft oil seal?
Bearing/oilseal cap?

Nov 27, 2010 at 7:19 AM
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VERNON BATT
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  • 2 POSTS
Oil leak is in the camshaft front seal. Thanks
Nov 29, 2010 at 11:04 AM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 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.
Nov 30, 2010 at 5:10 AM
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