Nathaniel,
Do I understand that the pistons in your SUs have a history of jamming? If
so, fix that problem. You should not have to lift the pistons while
starting -- lifting the pistons only dilutes the mixture going into the
manifold.
The carbs need to be mechanically correct, pistons, needles, nozzles and
float level before you can reasonably expect the car to start.
Gary
----- Original Message -----
From: <nmleeds@mindspring.com>
To: <datsun-roadsters@autox.team.net>
Sent: Friday, October 09, 2009 12:43 PM
Subject: [Roadsters] throttle body backfire -- enough to take my fingers
off?
> All,
>
> Still trying to start my car. And, for reasons to numerous to
> explain(history of jamming), I've been tempted to lift my SU's by hand
> while I'm trying to start the car. The only risk is that the car has been
> backfiring through the throttle body. Not often, but enough to make me
> concerned that if I stick my hands in there during a start that I'll lose
> a finger in the bargain.
>
> Any thoughts? What care should I take in handling a throttle body
> backfire -- are these strong enough to turn tools into weapons? Take a
> finger off? . . .
>
> Nathaniel
> '69 SU, Status: don't ask.
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