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#1 |
Registered User
Join Date: Nov 2014
Location: Louisburg, Ks
Posts: 17
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Carburetor
A few weeks ago I had to get a new carb so I just got a replacement for my old one (a generic Holley 1850). The guy that did it shortened the choke cable a little bit, on the old one it wouldn't open quite all the way so he put a spring on it to open it once you pushed it back in. On the new one you literally can't shut it by pulling the cable in the cab, you have to open the hood and push it shut. So I took the spring off and all it did was make it easy to shut but once it was shut it wouldn't open at all. I've tried different sized springs (ones I had left over from when I had to replace the throttle spring) but that didn't help. The cable isn't bunched up anywhere and I'm completely stuck on how to get it to open and shut smoothly.
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#2 |
Senior Member
![]() Join Date: Jul 2000
Location: North Texas
Posts: 3,488
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Re: Carburetor
Is the cable housing secured on both ends?
With the cable disconnected from the carb, is the total fore-to-aft cable movement enough to move the choke lever from fully closed to fully open? Sounds to me like either the housing isn't secured on both ends, or the cable is binding in the housing.
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Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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#3 | |
Registered User
Join Date: Nov 2014
Location: Louisburg, Ks
Posts: 17
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Re: Carburetor
Quote:
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#4 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,602
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Re: Carburetor
Burn us off a pic!
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#5 |
78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: Carburetor
So it's off when pushed in?choked when pulled out?
your control sounds backwards Its best not to have the control sit flush to the dash,when pushed in/off.
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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#6 |
Registered User
Join Date: Sep 2009
Location: South of HoustonTX.
Posts: 148
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Re: Carburetor
does it help if you hold the throttle down a 1/4 when you set the choke??
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JJ 71 SWB 360 Th400 4.56 ![]() |
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#7 |
Registered User
Join Date: Nov 2014
Location: Louisburg, Ks
Posts: 17
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Re: Carburetor
The choke plate is shut when you pull the cable out, the choke plate is open when you push it in, so choked when out regular when in
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#8 |
Registered User
Join Date: Nov 2014
Location: Louisburg, Ks
Posts: 17
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Re: Carburetor
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#9 |
Registered User
Join Date: Nov 2014
Location: Louisburg, Ks
Posts: 17
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Re: Carburetor
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#10 |
Registered User
Join Date: Nov 2014
Location: Louisburg, Ks
Posts: 17
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Re: Carburetor
Hopefully these will load, I've looked and it isn't kinked anywhere
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#11 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,602
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Re: Carburetor
Sure be nice to have a pic from the side!
Was that a holley manual choke carb or a converted to manual from electric? |
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#12 |
Registered User
Join Date: Nov 2014
Location: Louisburg, Ks
Posts: 17
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Re: Carburetor
Keep in mind the linkage is broken, but it came with a manual choke, I like the manual choke better but is the electric conversion worth a ****?
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#13 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,602
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Re: Carburetor
I like the manual choke too!
When you get the new parts you should adjust your cable so the outer sheath is clamped closer to the clamp. I always set my manual choke cables up so that when I pushed the knob in on the dash, the knob was about 1/8 inch from contact on the dash. That way I always knew it was pushed in all the way. One other thing I did on holley carbs was remove the little black button that pops in the hole on the choke cam. You'll see it when you put the new parts on. That way my choke moved freely from open to closed. I always had the habit of checking my choke was pushed in so never had a problem with the choke closing on me with the button removed. |
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#14 | |
Registered User
Join Date: Nov 2014
Location: Louisburg, Ks
Posts: 17
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Re: Carburetor
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#15 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,602
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Re: Carburetor
The button is there to keep the choke wide open. I removed it to make the action of the choke smoother. It always seemed to hang up a bit when I pulled on the choke.
I lived in a cold climate then. Anything to make the choke action smoother when firing up the old beast at 10*F helped. |
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#16 | |
78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: Carburetor
Quote:
my 78's Holley is Electric choke,seems to need fiddling in the spring and fall. I'm going back to stock carb and a manual choke. Been real hard to start this winter
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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#17 | |
Registered User
Join Date: Nov 2014
Location: Louisburg, Ks
Posts: 17
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Re: Carburetor
Quote:
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#18 |
Registered User
Join Date: Nov 2014
Location: Louisburg, Ks
Posts: 17
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Re: Carburetor
I thought about getting an electric choke but honestly I don't want to mess with wiring it up haha, plus I like the manual choke more, you can control it yourself and on mine if I had the cable pulled out just a little bit going down the road I've noticed it gives it more power, but it probably drags down my mpg's
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#19 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,602
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Re: Carburetor
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Tags |
carburetor, choke, holley, k20 |
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