backfire thru the carbs maybe a sticking intake valve
dave stoll
----- Original Message -----
From: steve car <steve_car@hotmail.com>
To: <steve_car@hotmail.com>; <datsun-roadsters@autox.team.net>
Sent: Saturday, October 21, 2000 9:57 PM
Subject: Re: Backfire problem
> A couple more things: It seems to be backfiring at the carbs most of the
> time verses at the exhaust pipe. But I am not sure it is actually the
carbs
> but it seems like it.
> Also, it doesn't run quite right when I give it some gas and before it
> starts backfiring.
> I just noticed that I didn't mention that the tube with the screw is at
the
> intake manifold that used to go to the smog stuff. I already have the
> nonemission distributer installed.
> Thanks again,
> Steve
>
>
> >From: "steve car" <steve_car@hotmail.com>
> >Reply-To: "steve car" <steve_car@hotmail.com>
> >To: datsun-roadsters@autox.team.net
> >Subject: Backfire problem
> >Date: Sun, 22 Oct 2000 02:44:28 GMT
> >
> >I was out today and all of a sudden my 69 1600 started backfiring like
> >crazy
> >when I gave it gas. This happens during acceleration and a constant
medium
> >speed. It ran good at idle and low speeds though. One thing I noticed
was
> >that my tube with the screw in it had popped off. But it did not solve
the
> >problem when I put a new one in.
> >
> >Timing is ok, fuel level in carbs is ok, vacuum advance mechanism moves
> >when
> >I suck on it. Points, plugs ok. Choke is not stuck. I tried looking for
> >manifold leaks with no luck. Maybe I am doing it wrong though. I sprayed
> >some carb cleaner at all gaskets and throttle area without noticing any
> >stumbling. This was done at idle.
> >
> >I am out of ideas. Does anybody have any suggestions? How do you
determine
> >for sure if it is fuel or ignition?
> >
> >Thanks,
> >Steve
> >_________________________________________________________________________
> >
> >
>
> _________________________________________________________________________
>
>
>
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