[T2] High Idle

C. Dreike c.dreike at verizon.net
Fri Dec 13 11:23:06 MST 2013


Hi,
I ran the same carb for about 25 years with a similar problem. I have 
a splitty so there is supposed to be a return leaf spring under the 
gas pedal as well as a coil spring arangement in the engine 
compartment that pulls on the throttle cable. If both are not 
installed, the carb could hang. Too much friction in the long throttle 
cable was my diagnosis. You might also take a close look at the nut 
that holds the throttle parts on the throttle shaft. If the nut is not 
adjusted just right, the throttle shaft may not rotate freely.  As 
always, YMMV.

Cheers!
Chris
64DD Kamper Kit

Scientists seek to understand what is,
while engineers seek to create what never was.
As the "Bad Astronomer" Phil Plait says, "Teach a man to reason, and 
he can think for a lifetime."
----- Original Message ----- 
From: "Lourd Baltimore" <lourd_baltimore at yahoo.com>
To: "Type 2 Lust" <type2 at type2.com>
Sent: Thursday, December 12, 2013 11:51 PM
Subject: [T2] High Idle


I recently swapped in a second-hand engine for my old 1600 twin port.

The new (to me) engine is fitted with a Weber 32/36 DFAV progressive
carb.  It runs well other than the engine will sometimes race at idle 
if
 I let up on the throttle.  If I quickly stab and release the throttle
it will sometimes return to normal idle speeds.

went to the engine bay and did the same thing by hand using the 
throttle
 linkage on the carb. If I press and release the linkage quickly, then
there is no problem. If I press the linkage and let up normally, then 
it
 hangs at a really fast idle. When it is at a really fast idle, I have
to press the linkage closed to get it to return to normal idle.

The fact that the idle seems fine when the throttle is released 
quickly
and or pushed home would rule out any problems with the idle 
adjustment
screws.
I'm going to look at adjusting the pedal free play first. I haven't 
done that in a while, but if someone can point me in the right 
direction, then that would be nice.

Any suggestions on where to go after this?

Thanks,

Josh
.
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