Author Topic: CHoke (Read 2219 times)

donkeykong · « **on:** Mar 21, 2005, 04:01:06 PM »

I have a 80 truck with a 20r/22r hybrid. When I start it, it revs to about 3500rpms the when it gets warm it goes down to about 2100rpms. I tried adjusting the idle screw and id doesnt do anything, my guess is that either the choke is stuck open or is not adjusted. THis isnt the electric choke but from what the book says it is controlled by water. Does anybody know if you can unhook the choke, and how hard is it to replace the choke. what parts are needed to replace the hole thing, when I look up choke on autozone.com it comes up with a list of parts and I dont want to buy anything that I dont need.

brainlessfool · « **Reply #1 on:** Mar 21, 2005, 04:13:49 PM »

there should be a def. screw for the fast idle.
sepate from the hot idle screw.

Ferg · « **Reply #2 on:** Mar 21, 2005, 05:46:46 PM »

Come by, I have a FSM you can look at..

donkeykong · « **Reply #3 on:** Mar 22, 2005, 03:15:27 PM »

Quote from: brainlessfool on Mar 21, 2005, 04:13:49 PM

there should be a def. screw for the fast idle.
sepate from the hot idle screw.

So branless you dont think it is the choke at, but the fast idle screw?

brainlessfool · « **Reply #4 on:** Mar 22, 2005, 04:03:37 PM »

the choke may very well be stuck on, butt it's the cold fast idle screw that is making it run so fast.
worth a look any way.

brainlessfool · « **Reply #5 on:** Mar 22, 2005, 04:07:01 PM »

ok, take 2. some carbs use a fast idle cam for the cold fast idle. they run the cam off of the idle screw and just get in the way so as to bump up the cold idle when the choke is on. if yours is that way you'll have to remove the cam and link. take a look and see what you think ya got.

kneedownnate · « **Reply #6 on:** Mar 22, 2005, 10:47:44 PM »

Dude, you should be able to tell at a glance if the choke is sticking or not. Just look down the throat of the carb when the truck has warmed up to see if the plate is opened up or not. There should be 3 or so screws holding the choke body in place, if it's not opening loosen those slightly(after it's fully warmed up) and slowly rotate the choke housing either way and see if it moves. I can't remember which way cause I haven't had a stock carb for so long, but it'll move no matter which way you rotate it. I personally like the water choke on my weber. If it's not that and not either idle adjustment then I would suspect a vaccuum leak.

Author Topic: CHoke (Read 2219 times)

donkeykong

CHoke

brainlessfool

Re: CHoke

Ferg

Re: CHoke

donkeykong [OP]

Re: CHoke

brainlessfool

Re: CHoke

brainlessfool

Re: CHoke

kneedownnate

Re: CHoke

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	Author Topic: CHoke (Read 2219 times) 0 Members and 1 Guest are viewing this topic. donkeykong Crawler Guru Turtle Points: -159 Posts: 420 Member since Jun '03 My truck and a nice trail...that's all I need CHoke « on: Mar 21, 2005, 04:01:06 PM » I have a 80 truck with a 20r/22r hybrid. When I start it, it revs to about 3500rpms the when it gets warm it goes down to about 2100rpms. I tried adjusting the idle screw and id doesnt do anything, my guess is that either the choke is stuck open or is not adjusted. THis isnt the electric choke but from what the book says it is controlled by water. Does anybody know if you can unhook the choke, and how hard is it to replace the choke. what parts are needed to replace the hole thing, when I look up choke on autozone.com it comes up with a list of parts and I dont want to buy anything that I dont need. Logged brainlessfool It's not my problem if you can't hear the voices too. Gold Turtle Award Turtle Points: 2730 Posts: 4,207 Member since Jun '02 drive fast or the devil may get ya Re: CHoke « Reply #1 on: Mar 21, 2005, 04:13:49 PM » there should be a def. screw for the fast idle. sepate from the hot idle screw. Logged A good day working, that's just sick Ferg Crawler Guru Turtle Points: 416 Posts: 577 Member since May '03 That was EASY!! Re: CHoke « Reply #2 on: Mar 21, 2005, 05:46:46 PM » Come by, I have a FSM you can look at.. Logged Some idiots are too busy knowing it all, to ever learn anything... donkeykong [OP] Crawler Guru Turtle Points: -159 Posts: 420 Member since Jun '03 My truck and a nice trail...that's all I need Re: CHoke « Reply #3 on: Mar 22, 2005, 03:15:27 PM » Quote from: brainlessfool on Mar 21, 2005, 04:13:49 PM there should be a def. screw for the fast idle. sepate from the hot idle screw. So branless you dont think it is the choke at, but the fast idle screw? Logged brainlessfool It's not my problem if you can't hear the voices too. Gold Turtle Award Turtle Points: 2730 Posts: 4,207 Member since Jun '02 drive fast or the devil may get ya Re: CHoke « Reply #4 on: Mar 22, 2005, 04:03:37 PM » the choke may very well be stuck on, butt it's the cold fast idle screw that is making it run so fast. worth a look any way. Logged A good day working, that's just sick brainlessfool It's not my problem if you can't hear the voices too. Gold Turtle Award Turtle Points: 2730 Posts: 4,207 Member since Jun '02 drive fast or the devil may get ya Re: CHoke « Reply #5 on: Mar 22, 2005, 04:07:01 PM » ok, take 2. some carbs use a fast idle cam for the cold fast idle. they run the cam off of the idle screw and just get in the way so as to bump up the cold idle when the choke is on. if yours is that way you'll have to remove the cam and link. take a look and see what you think ya got. Logged A good day working, that's just sick kneedownnate Gold Turtle Award Turtle Points: 1128 Posts: 9,757 Member since Oct '04 Re: CHoke « Reply #6 on: Mar 22, 2005, 10:47:44 PM » Dude, you should be able to tell at a glance if the choke is sticking or not. Just look down the throat of the carb when the truck has warmed up to see if the plate is opened up or not. There should be 3 or so screws holding the choke body in place, if it's not opening loosen those slightly(after it's fully warmed up) and slowly rotate the choke housing either way and see if it moves. I can't remember which way cause I haven't had a stock carb for so long, but it'll move no matter which way you rotate it. I personally like the water choke on my weber. If it's not that and not either idle adjustment then I would suspect a vaccuum leak. Logged RIP KYOTA You can go through life being scared of the possible, or you can have a little fun and tease the inevitable. Give a man venison, he'll eat for a day. Teach a man to hunt Blacktail, he'll be frustrated for life!