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04-29-2002, 06:36 AM
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#1 |
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Registered User
Join Date: Dec 2000
Location: Oceana WV USA
Posts: 184
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Carb problems? Maybe?
I recently bought a 72 Suburban that's in overall great shape. I've installed a new HEI dist., new fuel pump and an Edelbrock 600 with electric choke. It's been starting and running great. However the last two or three mornings it won't start. After nearly running the battery down each time, I can pour a little gas in the carb and she'll fire right up and run and start good all day. (the Edelbrock is only a couple of months old)
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"The World's a Mess"! 71 C-10 72 Suburban 2WD Oceana, West Virginia |
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04-29-2002, 07:14 AM
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#2 |
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Senior Member
 
Join Date: Jul 2000
Location: North Texas
Posts: 3,663
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Before you try to start the engine the next time it's cold, make sure the choke closes when you open the throttle. Also, are your plugs in good shape? I've seen engines that run well, but have cold start problems due to old plugs.
------------------ MikeB 69 C-10 Fleetside, mild 383, Dart Iron Eagle 180cc heads, Crane Energizer 266 cam and 1.6 roller rockers, Edelbrock Performer manifold and 600cfm carb, HEI w/ MSD components, 1986 front spindles/disc brakes, Vintage Air in-dash.
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Mike 1969 C10 LWB -- owned for 36 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- converted from 250-six to roller cam 350, Vortec heads -- sold 1981 C10 Silverado LWB, 305, TH350C -- 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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05-01-2002, 05:03 AM
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#3 |
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Registered User
Join Date: Dec 2000
Location: Oceana WV USA
Posts: 184
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Thanks, I did remove the air cleaner this morning and moved the throttle and it closed. Started right up. Must have been a glitch in the electric choke.
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"The World's a Mess"! 71 C-10 72 Suburban 2WD Oceana, West Virginia |
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05-01-2002, 08:51 AM
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#4 |
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Registered User
Join Date: Mar 2002
Location: Olathe, Ks USA
Posts: 29
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Not a glitch, that's the way they work. every morning when you start the truck, yoiu need to "preset" the automatic choke. the way you do it is to press the accelerator all the way to the floor once, then release. Now, your choke is set, and you can start 'er up.
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05-01-2002, 11:36 AM
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#5 |
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Senior Member
Join Date: Sep 2001
Location: Seattle, WA, USA
Posts: 5,817
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Yeah, that's pretty common for most of these old automatic chokes. Especially the old Rochester 2bbl and Quadrajets. I'd run my battery flat every day with that old 2G unless I set the choke using the throttle. lol
You can do it by hand as well (just to see how the mechanism works). Just get in there and pull the throttle assembly all the way forward until it "clicks". You'll be able to see how the throttle plate, linkage, and all that stuff adjusts to allow your carb to run rich at idle when you're starting your truck. ------------------ '69 3/4 ton C20 2wd w/ 350ci/400THM and a wood bed! '69 3/4 ton Custom 20 2wd w/ ORIGINAL 350ci/4sp Manual and a wood bed (parts beast). Seattle, WA. *See pics of my trucks and project at www.webshots.com!
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'69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA. |
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