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-   -   Warm up transmission (http://www.professionalcarsociety.org/forums/showthread.php?t=20949)

Daniel Scully 01-30-2018 11:21 PM

68
 
Quote:

Originally Posted by Blake Sherwin (Post 841923647)
Is there risk of damage if its driven with fouled plugs?

Either clean the plugs or just replace them. You can do no real damage with the choke stuck wide open other than it will be hard to start cold and take a little longer to reach operating temperature , stuck closed will do the damage.

Peter Grave 01-31-2018 12:54 AM

That shop if BS were electricity they would be a power house. That said 68 Rochester carburators were NOT noted for choke problems. Along with all others here I think choke is sticking due to something bent or gummed up. Best temporary solution have choke set open and just pump the blazes out of the gas peddle cold and it will start. Wait five minutes for it to warm up and all should be well till fixed. The manual choke from the 30s in not the thing to do.

John ED Renstrom 01-31-2018 12:55 AM

since the choke came on the carburetor, they should have set it when the installed it. don't go back there. you need to ask around or get you the shop manual off e-bay and read up on some of these things. they have good pictures and if you willing to learn mostly a step by step how to do it. I could show you but we are a little far apart.

Paul Steinberg 01-31-2018 02:00 AM

A sticking choke is a result of the air cleaner being over tightened, and it will warp the upper section of the carburetor. Best to have it professionally rebuilt, where they will know the proper procedure to repair the warping.

Blake Sherwin 01-31-2018 08:51 AM

Thanks for the comments. At this point the only reason i am at this place (Christian Brothers) is due to the carb warranty. Once i talk to them today i will first ask if they can fix the auto choke since i would imagine thats part of the carb, thus under warranty, otherwise i will ask them to set it open.

I will look for a manual too

Blake Sherwin 01-31-2018 08:53 AM

Quote:

Originally Posted by Paul Steinberg (Post 841923660)
A sticking choke is a result of the air cleaner being over tightened, and it will warp the upper section of the carburetor. Best to have it professionally rebuilt, where they will know the proper procedure to repair the warping.

I plan to send it to carburetors unlimited in AZ if my taxes are kind to me

Blake Sherwin 01-31-2018 12:01 PM

Going to be printing a copy of this for later:

http://www.gmcmi.com/wp-content/uplo...ice-Manual.pdf

John ED Renstrom 01-31-2018 12:20 PM

You will find the shop manual much more handy. I would not go back there for any reasion. There are only 3 parts to the choke that move. My bet is they slapped the rebuilt carb on and ran it out. Now every time you go back it's you need this. Find some one you can trust. If you can't do it yourself,find a mechanic you can trust.

Blake Sherwin 01-31-2018 02:17 PM

Called the shop again. Said they have the choke open for me and the brushed the plugs so they are all firing, said they dont know how long, but they are good for now.

I asked if there was any reason the auto-choke couldnt be fixed since it was part of the carb which was under warranty. His answer to me was that we could replace it with another re-manufactured carb but it might be the same issue, and parts arent as readily available for quadrajets today.

Whether true or not I am picking it up today and will drive with an open choke and see how it fares. Assuming it is tuned right.

When I have the cash I will send the old carb to Carburetors Unlimited in AZ.

As for starting with the open choke in cold weather am I just going to need to either pump the gas more before start or use spray in the air cleaner while its cold?

Currently I usually pump about 4 in accessory before cranking, but I still usually have to give it alot of gas while cranking to get it going (this may have been partly because of the fouled plugs too i suspect). I also have to give it gas to keep it running while idle which those plugs may have contributed to that a bit as well.

Hoping it will be running alot smoother with this open choke once warmed up

Daniel Scully 01-31-2018 10:16 PM

68
 
2 Attachment(s)
Quote:

I asked if there was any reason the auto-choke couldnt be fixed since it was part of the carb which was under warranty. His answer to me was that we could replace it with another re-manufactured carb but it might be the same issue, and parts arent as readily available for quadrajets today.
Well that is BS , if it is rebuilt it should work as new.


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