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10-18-2013, 08:47 PM
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#1 |
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Registered User
Join Date: Oct 2013
Location: Santa Cruz, california
Posts: 5
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instant rev upon ignition???
I have a 69 c10 with a 350 as soon as it starts its reving, don't know anything about cars yet so I'm jumping in blind here. Its not the throtle linkage, when I pull the carb filter off, and look into the first chamber through the flaps it seems as if the second flaps are angled, don't know if they should sit flat or not
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10-18-2013, 09:14 PM
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#2 |
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Registered User
 
Join Date: Dec 2012
Location: Chandler AZ
Posts: 1,149
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Re: instant rev upon ignition???
welcome to the forum!
What kind of carb do you have please? Does it have an automatic choke? Stock motor? More information would help.
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1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9 |
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10-18-2013, 10:53 PM
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#3 |
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The Older Generation
  
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,473
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Re: instant rev upon ignition???
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 ... It depends on how much it revs. If it has an automatic or electric choke it is normal for them to run at a higher RPM until they warm up. If you hit the throttle a couple of times when it is running high does it idle down some?Do you have a throttle return spring on it? Single spring or double? LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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10-20-2013, 08:43 PM
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#4 |
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Registered User
Join Date: Oct 2013
Location: Santa Cruz, california
Posts: 5
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Re: instant rev upon ignition???
So it was a sticking choke, I have done a rebuild of the carburetor running smooth.
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10-20-2013, 11:47 PM
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#5 |
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Registered User
Join Date: Dec 2012
Location: Chandler AZ
Posts: 1,149
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Re: instant rev upon ignition???
Good job tracking it down.
__________________
1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9 |
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10-20-2013, 11:54 PM
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#6 |
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Registered User
Join Date: Dec 2011
Location: Creighton Sask. Canada
Posts: 4,121
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Re: instant rev upon ignition???
See, ask on this site and smarter in like 2 seconds. Welcome to the site, nothing but cool rides and lots of help here, enjoy.
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1987 Green n Green machine. 5.0 4spd std. 7" lift w 35's. |
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10-22-2013, 10:47 PM
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#7 |
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Registered User
Join Date: Oct 2013
Location: Santa Cruz, california
Posts: 5
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Re: instant rev upon ignition???
So here is some fun to mull over, I drove her 100 miles home(no issues and a few stops along the way to sight see and hike) and now 2 days later she has issues starting up and stalling during idle. Could I have rebuit the carb wrong?
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10-22-2013, 10:59 PM
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#8 |
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Registered User
Join Date: Dec 2011
Location: Creighton Sask. Canada
Posts: 4,121
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Re: instant rev upon ignition???
Still sounds like the choke isn't set correctly and once warmed up has no effect on driving 100 or more miles, only start up.
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1987 Green n Green machine. 5.0 4spd std. 7" lift w 35's. |
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10-23-2013, 12:01 AM
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#9 |
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Registered User
Join Date: Oct 2013
Location: Santa Cruz, california
Posts: 5
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Re: instant rev upon ignition???
Well I haven't driven her far after I have had the idle issue, so any ideas on what I should try for my choke?
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10-23-2013, 12:28 AM
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#10 |
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Registered User
Join Date: Dec 2011
Location: Creighton Sask. Canada
Posts: 4,121
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Re: instant rev upon ignition???
Hard to explain without being there but sounds like not loaded enough to start properly. Basically need it to close cold when the pedal is depressed once with enough force to be closed just snug but if to much will stay closed and flood a bit, in other words not come off quick enough but if not enough force or tension will try to flutter while cranking it and not be closed enough to work properly. Just try to adjust it a bit tighter, a bit at a time I guess, trial and error right.
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1987 Green n Green machine. 5.0 4spd std. 7" lift w 35's. |
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10-23-2013, 12:52 AM
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#11 |
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Registered User
Join Date: Oct 2013
Location: Santa Cruz, california
Posts: 5
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Re: instant rev upon ignition???
Well sounds easy enough, ill see what I can do tomorrow, ill keep the thread posted
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10-23-2013, 03:28 PM
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#12 |
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Senior Member
Join Date: Mar 2012
Location: Chesapeake, Va
Posts: 1,275
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Re: instant rev upon ignition???
I noticed you live in Cal. is Santa Cruz northern or in the southern part of Cali? The reason i am asking is, i live in VA and i have my choke wired open i really dont need it , it never gets cold enough, In the winter time on cold morning i just have to keep it running for a min or so until it starts to warm up enough to idle,
something to think about
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Mike 72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider. 421 SBC / TH350 3000RPM Stall Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks 
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10-23-2013, 10:21 PM
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#13 |
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Registered User
Join Date: Dec 2011
Location: Creighton Sask. Canada
Posts: 4,121
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Re: instant rev upon ignition???
Good point BigMac, I live where it gets killer cold, so we need chokes and set just right, in this case could just wire it wide open and warm it a little as you mentioned, good advice where the cold never really comes.
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1987 Green n Green machine. 5.0 4spd std. 7" lift w 35's. |
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