|
|
Extreme Veteran
Posts: 531
 
Location: Park Hills, KY | Took my car out yesterday cause of the 60 degree weather. Engine would not stop idling super fast, so I had to reach in and push the throttle linkage down until it settled. It just kept rising back up to high speed. Plus exhaust smells SUPER SUPER rich. I though it may be gummed up so I sprayed some cleaner and then some lube on the linkage.
Still idling super high. Any suggestions on what adjustment to make!? |
|
| |
|
Extreme Veteran
Posts: 531
Location: Park Hills, KY | It’s not any of the usual adjustments. If I pull back on the accelerator pedal while in neutral, it goes to the correct idle speed, or stalls. If I let off the pedal, it goes up to what sounds like above 1800-2000 rpm. When I put into gear it slams hard and the car jerks forward.
Linkage?? |
|
| |
|
Board Moderator & Exner Expert 10K+
Posts: 13045
  
Location: Southern Sweden - Sturkö island | choke linkage binding in the cover washer or throttle valve linkage wrong adjusted. |
|
| |
|
Extreme Veteran
Posts: 531
Location: Park Hills, KY | I think it may be the choke— never touched the throttle valve linkage. Is this the angles screw on the back driver’s side? The choke has been sticking before but never enough to just stay at high idle. Any ideas on adjustments I could make Wiz? |
|
| |
|
Expert 5K+
Posts: 8947
Location: WHEELING,WV.>>>HOME OF WWVA | disconnect the choke to verify the choke as a problem , if not then proceed with other adjustments/causes ---------------------------------------------------later
a little carb cleaner goes a long way |
|
| |
|
Board Moderator & Exner Expert 10K+
Posts: 13045
Location: Southern Sweden - Sturkö island | Cmangeot - 2019-12-24 11:10 PM
I think it may be the choke— never touched the throttle valve linkage. Is this the angles screw on the back driver’s side? The choke has been sticking before but never enough to just stay at high idle. Any ideas on adjustments I could make Wiz?
The throttle valve linkage goes from the firewall and down to the transmission - if you didn't had any problem Before, just check that the grommet in the transmission lever hasn't disintegrated.
The bi-metallic spring is mounted in the choke well of the intake manifold. From the spring goes the link to the carb - over the link theres a cover washer that might bind to the link and cause a high idle. Just brush away eventual rust and apply some anti-seiz or rust oil and check that Everything moves freely.
|
|
| |
|
Expert 5K+
Posts: 7393
Location: northern germany | Cmangeot - 2019-12-24 11:17 AM
Took my car out yesterday cause of the 60 degree weather. Engine would not stop idling super fast, so I had to reach in and push the throttle linkage down until it settled. It just kept rising back up to high speed. Plus exhaust smells SUPER SUPER rich. I though it may be gummed up so I sprayed some cleaner and then some lube on the linkage.
Still idling super high. Any suggestions on what adjustment to make!?
Still the OE carb with divorced choke?
This is a very, VERY simple mechanism and nobody can tell better than you whats going on.
If the choke is stuck, or the choke spring broke, the choke would still be closed or partially closed and the fast idle screw would be still resting on the fast idle cam, so you wouldn't be able to pull it back to curb idle. So I'd say it is something in the carb/transmission linkage or maybe just a weak return spring. |
|
| |
|
Extreme Veteran
Posts: 531
Location: Park Hills, KY | Thanks! I’ll check all of these options. I’m no mechanic. I haven’t had any reason to adjust anything for the 8 yrs I’ve had this car. Screw is not resting on the fast idle cam. If I tighten, the idle would get higher. My bet is on the spring. |
|
| |
|
Expert 5K+
Posts: 7393
Location: northern germany | There are 2 screws, one for hot (curb) idle, the other for cold (fast) idle when the choke is activated. Remove the AC hsg and check the position of the choke valve. If it is running fast with choke open, check if the fast idle screw is still on the fast idle cam (shouldn't). If the choke is still partially activated when hot, adjust the choke spring/linkage. If not, the problem is likely in the linkage. If you can't see anything from above, unhinge (just to check) the linkage going to the transmission (don't drive it that way).
If its really cold, the problem could be a stuck (open) heat riser. With a dry intake (Mopar Big Block) in cold weather the choke stays on forever without a heat riser.
Edited by 1960fury 2019-12-25 1:11 PM
|
|
| |
60 Windsor - carb issue
