|
Most likely it's a problem in the top end (valve
guides or seals). I would guess that the seals are worn. After 20 years of the
engine heat cycling these little suckers turn to stone (just like dried out
windshield wiper blades). They can be replaced cheaply (usually about $40
including gaskets) and WITHOUT removing the cylinder heads from the engine. Some
skill is required to do the job, but it's not that hard. The cylinders just need
to be pressurized while you remove the valve spring retainers. I actually use a
hose from my compression tester (remove the schrader valve) and hook it up to my
air compressor (make sure the air compressor is regulated and turned down to
about 30-40psi or you'll just blow out your engines other oil
seals).
Or you could simply change to a thicker oil and
live with it. Typically the seals will only cause smoke at start up, whereas the
guides will cause smoke under high vacuum conditions
(i.e.decelerating).
I've done seals on numerous vehicles and have been
99% satisfied with the improvement it made. No need to tear apart an good
running engine if you don't have to.
Good Luck,
Paul A. Feeney
68 Crown Coupe
82 EFI Wire Wheel (still not running)
|
Back to the Home of the Forward Look Network