|
05-16-2011, 12:08 PM
|
#1 |
|
BLACK SATIN
 
Join Date: Jan 2009
Location: canton, IL
Posts: 266
|
won't idle
We put a 1985 305 V8 in my 67 3/4 ton that had a 250 6 cylinder. It didn't run very well until we rebuilt the carburetor, but it still won't idle. There is a tan wire with a black stripe on it that we're not sure where it went. I would appreciate any help with this. It is a Rochester quadrajet with an electric choke. The electric choke is working fine & it seems to run OK at higher rpms.
__________________
67 C10 Fleetside LWB-283, 3 on the tree,power assisted steering, father-in-law bought it new 67 C20 Fleetside LWB-'85 305 V8 (original was 250 6 cyl), Holley 600 carb, full length Hedman headers, dual exhaust behind the back wheels, 4 spd , manual steering 85 C10 Silverado- 305ci |
|
|
|
05-16-2011, 01:53 PM
|
#2 |
|
Registered User
Join Date: Aug 2004
Location: Yukon Territories
Posts: 58
|
Re: won't idle
From past experience it could be any of the following on a QJet:
Float adjustment Primary blade / Choke adjustment Idle mixture screws Worn primary metering rods / jets Vaccuum leak Does it run rich or lean at idle? Ive had lean issues with choke closing the primary too early and killing the engine except at higher idle (both vac. pull off and electric). |
|
|
|
|
05-16-2011, 02:58 PM
|
#3 |
|
Between Trucks...
Join Date: Mar 2002
Location: Los Angeles, CA.
Posts: 3,830
|
Re: won't idle
If the timing is too retarded it won't want to idle.
__________________
Beat it to fit, Paint it to match... 
|
|
|
|
|
05-17-2011, 08:35 AM
|
#4 |
|
BLACK SATIN
Join Date: Jan 2009
Location: canton, IL
Posts: 266
|
Re: won't idle
It seems to be running lean.
__________________
67 C10 Fleetside LWB-283, 3 on the tree,power assisted steering, father-in-law bought it new 67 C20 Fleetside LWB-'85 305 V8 (original was 250 6 cyl), Holley 600 carb, full length Hedman headers, dual exhaust behind the back wheels, 4 spd , manual steering 85 C10 Silverado- 305ci |
|
|
|
|
05-17-2011, 08:53 AM
|
#5 |
|
Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,229
|
Re: won't idle
You probably have a bad vacuum leak some where. There is a large vacuum outlet at the rear of the carb. If this is not utilized or plugged it will cause this. Start with the idle mixture screws about 3 turns out. Then slowly turn them in till the engine slows down. Then open them about 1/2 turn. Did you set the float level correctly? You may have to raise it a little.
|
|
|
|
 |
| Bookmarks |
|
|
Linear Mode
