The common denominator here is engine temperature. Oil pressure is higher
when the engine is cold. The lower pressure is the way the babbit beaters
run. Remember, all the oil pump is doing is lubricating the rocker
assembly. The lower end is a splash system.
Does you heat riser valve work? A correctly working valve will warm up the
manifold quicker for better fuel atomization and less hesitation when cold.
<><
Whitney Haist
Orinda, CA
Chevy trucks: 2-'46s & a '39
www.jps.net/haist/artdeco.htm <http://www.jps.net/haist/artdeco.htm>
-----Original Message-----
From: owner-oletrucks@autox.team.net
[mailto:owner-oletrucks@autox.team.net]On Behalf Of Jim House
Sent: Friday, April 06, 2001 6:25 AM
To: Oletrucks (E-mail)
Subject: [oletrucks] backfire update
Well my guy found some original AC Delco points and replaced them on my
truck. Mine are still on order at Carters, getting to be 3 weeks. He did
the timing and told me that I put my new distributor cap on backwards. I
did not have a clue that there was a correct way to put the caps on. We can
now drive the truck and have a normal conversation in the cab. For some
reason the engine runs much quieter. The truck still hesitates on
acceleration however there is no backfire. After driving 10 - 15 minuets
there is no hesitation. Also, I noted 3 months ago that I was running
straight 30 weight oil and I had 30 lb pressure for the first 10-15 minuets.
I have changed to 10/30 and now I have 15-17 lb pressure for the first 10-15
min then it drops down to 7 lbs and stays there. This is also the time
period that I have had all of my problems. Is there a connection?
My guy told me that to stop the hesitation that I need to rebuild the
carburetor. What do you all think?
Thanks,
Jim House
46 Chevy 3104
Hollis, NH - I can see a 1/3 of my front yard - maybe winter will end....
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
|