Sounds like a vacuum leak. The cold water is either causing something to
close up or temporarily plugging the leak. Try squirting some carb cleaner
around the throttle shaft bushings and various other places. If it suddenly
idles down you've found your leak.
Best regards,
Fred Schroeder
roadster@schroeder-family.us
NRA Life Member
Homepage: schroeder-family.us
Behold the superfluous. They are always sick. They
vomit their gall and call it a newspaper.
Friedrich Wilhelm Nietzsche 1844-1900
----- Original Message -----
From: Dana Scribner <dscrib2@hotmail.com>
To: <datsun-roadsters@autox.team.net>
Sent: Thursday, June 17, 2004 6:52 AM
Subject: hot carb
> I have run into a problem that I have had for a couple of years with the
> rear carb on my '68 2000.
>
> When it is cool out both carbs idle down fine but when it is hot or after
> driving awhile the rear carb does not idle down. I have traveled 40 MPH
> without touching the gas. Do to a leak in the heater core I have taken
that
> hose off and routed a new one that comes out the back of the manufold and
> raps around the air cleaner and back to water pump. The carbs have been
> rebushed in the last couple of years.
>
> Th other day when the back carb was acting up I poured same cold water
onto
> the carb and it idled down just fine but as soons as it got hot it acted
up
> again.
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