[Roadsters] Cant get roadster to idle

shas1983 at netzero.net shas1983 at netzero.net
Sat Mar 6 05:33:21 MST 2010


It acts like a vacuum leak to me as well. Fuel pump, distributor, gaskets,
everything else is new. Are there any hidden plugs in the manifold or head or
any other sources of a vacuum leak that I may be missing?

---------- Original Message ----------
From: "Gary and Cindy Ault" <aultgc at att.net>
To: <shas1983 at netzero.net>, <datsun-roadsters at autox.team.net>
Subject: Re: [Roadsters] Cant get roadster to idle
Date: Fri, 5 Mar 2010 23:26:20 -0600

Way too many possibilities, other than carburetion, to try to diagnose
remotely.  If there is truly fuel leaking from the nozzles, the condition of
the carbs themselves is questionable.  If all other things with the engine
are correct, you should only need to "open" the mixture one turn from full
closed.

Have you checked for intake manifold leaks?  When leaving our subdivision
one morning many years ago, I came to a stop sign and the engine died.  I
cranked it up again, and it quit.  I quickly figured out it would run if I
kept it above 3000 rpm.  When I checked under the hood, I noticed that one
of the plugs I had installed in the intake manifold -- in the anti-backfire
inlets -- had fallen out.  I got the car back home and installed a spare.

Perhaps others will have more to say.

Gary

----- Original Message -----
From: <shas1983 at netzero.net>
To: <datsun-roadsters at autox.team.net>
Sent: Friday, March 05, 2010 6:11 PM
Subject: [Roadsters] Cant get roadster to idle


>I have a 69 2000 that was just rebuilt. Installed z therapys i got from a
> friend. Car cranks and runs well from 2000 to 3000 rpms. Beloe that car
> wants
> to stiumblke and die Tried to rich carbs up. Seens to leak gas from bottom
> of
> nozzles past 2.5 turns. any ideas?
>
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