Cold starting/running problems - The 1947 - Present Chevrolet & GMC Truck Message Board Network

toms68cst · 03-28-2015, 03:32 PM

Hey all,

Lately I've been having trouble with my truck in the colder weather. It's always coughed and back fired quite a bid driving it in the really cold weather but it would get by.

Lately, I can't even get it started or keep it running in the colder weather. However if it's more than 60 outside or so it seems to start right up and run like a top. It's kind of weird.

I am not sure if it's carburation or electrical. I kind of suspect carburation. It's a stock 4b Rochester carb.

Any ideas on where I should start or some basic checks?

justin4260 · 03-28-2015, 04:28 PM

check your choke. do you have an auto choke or a manual?

toms68cst · 03-28-2015, 04:39 PM

Auto choke. It is closed when cold. It also has stock distributer.

cdowns · 03-28-2015, 05:20 PM

stock distributor as in pointsand condenser?? set the points for the proper gap and or dwell

hamjet · 03-28-2015, 07:07 PM

Sounds like you have to adjust the choke rod or the vacuum break for the choke.

03-28-2015, 03:32 PM	#1
toms68cst Registered User Join Date: Jun 2000 Location: Bismarck, ND Posts: 4,282	Cold starting/running problems Hey all, Lately I've been having trouble with my truck in the colder weather. It's always coughed and back fired quite a bid driving it in the really cold weather but it would get by. Lately, I can't even get it started or keep it running in the colder weather. However if it's more than 60 outside or so it seems to start right up and run like a top. It's kind of weird. I am not sure if it's carburation or electrical. I kind of suspect carburation. It's a stock 4b Rochester carb. Any ideas on where I should start or some basic checks? __________________ Unrestored 68 C-10 CST. Original 327. 4-Speed CH465. 50k or so miles. TREASURER, Drum Brake Club.

03-28-2015, 04:28 PM	#2
justin4260 Registered User Join Date: Feb 2015 Location: houston texas Posts: 206	Re: Cold starting/running problems check your choke. do you have an auto choke or a manual?

03-28-2015, 04:39 PM	#3
toms68cst Registered User Join Date: Jun 2000 Location: Bismarck, ND Posts: 4,282	Re: Cold starting/running problems Auto choke. It is closed when cold. It also has stock distributer. __________________ Unrestored 68 C-10 CST. Original 327. 4-Speed CH465. 50k or so miles. TREASURER, Drum Brake Club.

03-28-2015, 05:20 PM	#4
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Cold starting/running problems stock distributor as in pointsand condenser?? set the points for the proper gap and or dwell __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

03-28-2015, 07:07 PM	#5
hamjet Registered User Join Date: Apr 2013 Location: South Westerlo, New York Posts: 1,325	Re: Cold starting/running problems Sounds like you have to adjust the choke rod or the vacuum break for the choke. __________________ Thanks, Joe.. 1969 C/10, 348 C.I., 3X2 bbl. V8, 2004r , LWB.



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