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2 questions one post: carb and heater core

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pornorob

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i'm pretty sure it has a rochester on it and I cant get it to idle any slower. its idling at about 1100rpm and I've turned what I think is the idle adjustment screw(right side from the front knda near the bottom) far enough out that the linkage isn't even hitting the the end of the screw anymore. I was wondering if a faulty electric choke might be the cause but thats just a blind guess. I'll get a pic of the carb and post it later today for Identification purposes.

OK question # 2 the hoses for my heater core are not connected so no heat. I was wondering how to connect them. I see one spot to hook it up on the water pump but I need to know where to hook the other hose up. Any hints or suggestions that will make my life easier are appreciated.:D
 
pornorob said:
i'm pretty sure it has a rochester on it and I cant get it to idle any slower. its idling at about 1100rpm and I've turned what I think is the idle adjustment screw(right side from the front knda near the bottom) far enough out that the linkage isn't even hitting the the end of the screw anymore. I was wondering if a faulty electric choke might be the cause but thats just a blind guess. I'll get a pic of the carb and post it later today for Identification purposes.

OK question # 2 the hoses for my heater core are not connected so no heat. I was wondering how to connect them. I see one spot to hook it up on the water pump but I need to know where to hook the other hose up. Any hints or suggestions that will make my life easier are appreciated.:D
Click to expand...

Good way to test the binding choke theory is to take the choke off and see if it still idles really high.

On the heater hose part, it can be connected to either the water pump, intake or radiator.
 
here is the carb. I took the choke off and it didn't do anything. is it possible that it was rejetted with a jet that are too big? don't really know much about carbs just taking a stab in the dark.

p1010914.JPG
 
Where in the picture do you think the idle control screw is?

BTW, that sucker is filthy. Go buy a can of carb cleaner and clean the outside and inside of that unit....
 
Yup, that's where it is. You're saying that the screw is backed off so far it's no longer touching the linkage? Can you manually pull the throttle linkage back? Is there a chance that your throttle cable is binding somewhere?
 
it takes alot of effort to pull the linkage any further than ii already is. the cable actually moves really easily. I may try disconnecting the throttle cale and see what happpens then.
 
Check all you vacume hoses and carb base for vacume leaks.
Check to make sure the choke is open all the way and the high idle adjustment screw on the choke is not hung up on the high idle cam.
 
Hmmmmmmmm.......never thought of that. Are you sure that the fast idle linkages on the passenger side of the carb aren't sticky or jammed up?

Man, you really need to clean that carb......:deal: :rotfl:
 
well I checked the high idle screw and all the linkage that side of the carb everything moves freely. disconnected the throttle cable.... no prob there. I've heard of spraying carb cleaner to find vacuum leaks. Can you use WD40( I don't have any carb cleaner) instead?
 
pornorob said:
I think thats where it is. (yellow arrow)
Click to expand...

Left side of the pic I see a spade connector that should be connected to the choke housing. Without 12 volts there the choke won't open and the fast idle won't kick down.

Rene
 
that was disconnected to check to see if the choke was working. it is connected now. I manually moved the linkage so that it would kick down from high idle and it made no difference. I'm at a loss.
 
pornorob said:
well I checked the high idle screw and all the linkage that side of the carb everything moves freely. disconnected the throttle cable.... no prob there. I've heard of spraying carb cleaner to find vacuum leaks. Can you use WD40( I don't have any carb cleaner) instead?
Click to expand...

No wd40 - go buy the carb cleaner. It's cheap and really works well. You should always have ity around anyway. Spray around the carb base, intake manifold base and don't forget the exhust manifold as well. Good luck
 
That looks like the M2M series 2 barrel. If you have a chilton or haynes manual you can look under fuel and exhaust systems for step by step instructions.
 
Thats a rochester Q-jet. (4 barrel)

Is the throttle kicker by any chance still sticking out and not retracting? It's the solenoid above the idle speed screw.
 
Yeah, that's another possibility, eh?

Pornorob- the solenoid that Dorian is referring to is the the little can with the blue wire/red spade connector running to it. If you look carefully, there's what looks like a bolt head touching the little green-colored actuator arm.

I'm pretty sure that the solenoid kicks the idle up when the air conditioner or defrost is turned on. If it's "stuck on", then the idle will be stuck in the elevated throttle position, which may explain why you can't get the sucker down to curb idle.

Sorry, I don't know how to troubleshoot the solenoid. I DO know that last year I didn't fully turn my A/C off and my idle kept kicking up for no reason, or so I thought.....:doah:
 
It Just Gets Worse

dyeager535 said:
Thats a rochester Q-jet. (4 barrel)

Is the throttle kicker by any chance still sticking out and not retracting? It's the solenoid above the idle speed screw.
Click to expand...

:eek1: How in the friggin heck did I overlook that. Embarrasing, friggin embarrasing - Time for early retirement.

http://www.sptimmy.com/sounds/timmyshhh.wav
 
Last edited:
pornorob said:
here is the carb. I took the choke off and it didn't do anything. is it possible that it was rejetted with a jet that are too big? don't really know much about carbs just taking a stab in the dark.
Click to expand...

Do you know your advance hose is disconnected ?
 
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