Concentrate on the manifold to head junction - are the bolts too loose
or too tight or was the gasket changed?
Also, if you have a bad ignition wire or cracked/ failing distributor
cap or rotor, that can also cause this problem.
Alan
On 3/14/11, warthodson@aol.com <warthodson@aol.com> wrote:
> Thanks for the replies. Keep them coming.
> I will double check the timing & valve adjustment & look closely for exhaust
> leaks. One thing that I noticed is that the backfiring seemed to occur
> almost
> immediately as we left his house for a test drive. The car had not even had
> time to heat up. I would not think that there would be enough heat in the
> exhaust system to light off the backfire. We will try pulling out the choke
> to
> see if the problem gets better or worse. I understand the concept of the
> timing gear being installed off by 1 or more teeth, but I do not know how to
> check for that other than at top dead center (on the compression stroke)
> both
> valves should be closed. The engine was rebuilt by a shop that has
> considerable experience, but of course anyone cam make a mistake. I also
> understand how the distributor could be 180 degrees out, but it makes my
> head
> hurt when I try to understand how the engine could run without manifesting
> any
> other problems other than a single backfire upon shifting gears. This car
> drove to Conclave last year & other than the backfiring, appeared to be
> fine.
> No fuel mileage issues, starts easily, does not over heat, runs & idles
> smoothly, etc.
> Gary
> _______________________________________________
> Healeys@autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation $12.75
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/healey.nut@gmail.com
>
--
Sent from my mobile device
_______________________________________________
Healeys@autox.team.net
Donate: http://www.team.net/donate.html
Suggested annual donation $12.75
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
|