[Healeys] Help - Oil smoke in exhaust

[Alan Bromfield]

Hey Peter.
Many thanks for your input. We have discovered that it is definitely
something to do with the smog kit. We have had a couple of days of
experimentation to try and pin the problem down because it only happens from
dead cold moving toward warm-up. 

The smog kit on this car comprises an oil seperator canister on the timing
case that vents through a tube to the crankcase ventilation valve and into
the inlet manifold.  If the connecting tube (canister to valve) is
disconnected, so that the crankcase pressure vents to atmosphere, we get air
intake through the ventilation valve. That really screws the carburation so,
with a bung in the ventilation valve to stop it drawing air, the smoke
problem goes away. It is therefore not valve guides or piston blow-by, but a
breathing/pressure problem in the smog arrangements.  I can't believe that -
"They all do that sir" - as the salesman said to the punter.

The trick now is to find which bit isn't behaving. I'll keep you informed if
we get any closer to pinning it down.

Cheers..........

 _______________________________________________
(______________  Alan Bromfield  _______________)
   (______     \____1957-BN4 ___/    _______)
          (_________________________)
            http://www.nfahc.co.uk
        http://www.healey-weekend.com

-----Original Message-----
From: Peter C [mailto:peter at nosimport.com] 
Sent: Monday, March 24, 2008 9:13 PM
To: Alan Bromfield; healeys at autox.team.net
Cc: Phil - nfahc
Subject: Re: [Healeys] Help - Oil smoke in exhaust

Alan,
         I and a few friends with the same era Spridgets have had the 
same thing. Start up, drive for (me) exactly 1.65 miles, smoke 
billows out at that point which is exactly when the temp gauge moves 
off cold, then it stops exactly .58 miles later.
         Solution?  fergataboutit.   Actually, I've come to utilize 
it as at .75 miles I am turning on to a highway, where people tend to 
run up my back.... I loose them in a cloud, and off I go! It's not 
oil smoke either..it's stinkier and black.
         Honestly, it's been discussed for years, and it happens only 
on a certain generation of smog stuff.. the earliest.
Peter C.