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ST Dog · 04-22-2009, 02:16 PM

Resurrecting an old post.

Anyone got pictures of the monojet linkages?
I think have a problem with the fast idle cam.

'68 GMC, manual choke. Story is the engine was replaced in '72 with a new engine from a Nova (dealer warranty replacement best I can tell).

The number on the carb points to a '72 carb.
I think it was modified some for the manual choke though.
The coil is still on the intake with the linkage rod, but it's not attached to the cab, and no place to attach it either. There is a rod from the rear of the choke shaft to a cam at the base which looks like a fast idle cam.

Anyway, when I close the choke it doesn't move the fast idle cam much (if at all). If I move the cam by hand, noting in the throttle linkage touches it. Looks like I need to bend a tab on the throttle linkage to set the fast idle, but until the choke moves the cam it won't help much.

04-22-2009, 02:16 PM	#11
ST Dog Registered User Join Date: Feb 2009 Location: BFE Mississippi Posts: 23	Re: Rochester Monojet Help Resurrecting an old post. Anyone got pictures of the monojet linkages? I think have a problem with the fast idle cam. '68 GMC, manual choke. Story is the engine was replaced in '72 with a new engine from a Nova (dealer warranty replacement best I can tell). The number on the carb points to a '72 carb. I think it was modified some for the manual choke though. The coil is still on the intake with the linkage rod, but it's not attached to the cab, and no place to attach it either. There is a rod from the rear of the choke shaft to a cam at the base which looks like a fast idle cam. Anyway, when I close the choke it doesn't move the fast idle cam much (if at all). If I move the cam by hand, noting in the throttle linkage touches it. Looks like I need to bend a tab on the throttle linkage to set the fast idle, but until the choke moves the cam it won't help much.