Jim,
I had a similar problem when running 10w 30 so I switched back to straight
30 wt. and the oil pressure went back to where it was before.
If the hesitation goes away after the engine is warm then it sounds more
like a choke needing adjusting then the carburetor. A constant hesitation
on acceleration would be caused by a bad accelerator pump in the carburetor.
Sometimes you can advance the timing some to eliminate or reduce a
hesitation.
Joe
-----Original Message-----
From: Jim House <jhouse@ccsolution.com>
To: Oletrucks (E-mail) <oletrucks@autox.team.net>
Date: Friday, April 06, 2001 6:42 AM
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
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