Idle problem on C15 261 CU IN

[TCLARK]

Thaqt is a Blaster 8202 not 8802

[Bob Carriere]

I don't think you need that resistor.....check the instruction or visit their web site.

The idle vacuum has to come up. Are your windshield wipers connected...? any chance of a small leak in that system??? The only time my vaccum gets that low 6 ......is if I floor the gas in 3rd or 4th gear.

Steady vacuum reading is encouraging...... whatever is leaking must be very small and easily overcomed by the higher rpm.
You are going to have to get very close to the intake manifold, carb base, wiper output pipe, dizzy vacuum advance......check the PCV system as well........ may be stuck open...... take it apart and clean it in carb solution......

Cheers

[TCLARK]

I checked the website and answer is a bit obscure, I think I will stay with
the resistor for now.
I have set the idle at 480-500 rpm the vacuum is still only5.
I have only the carb vacuum port to check, I have no wiper tubing
or port for the wipers. I may need a base with a nipple on it for
wipers. There is no pvc system on this set up so that isn't a worry
This has me thinking I should check the bakelite carb base. It
is orginal to the 1959 2 ton truck this motor came from
Cheers
Terry