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#1 |
Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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running problem
sometimes my truck will try to die on me, itll be idleing fine then for some reason the rpms will start to drop slowly and eventually die if i dont keep it runing myself, now this happens fully warmed up or not, i never know when its gona do it till it does it and if it matters i did let it go to see if it would die and i took the aircleaner off and when it died some fuel splattered out of the carb, thats how i know itll die, i have to 2 foot it to keep it going in gear or not and it really sucks in the middle of traffic
any help is greatly appreciated and thanks in advance
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-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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#2 |
Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: running problem
i did pull the carb and clean it out and sprayed the hell out of it with carb clean and made sure the bolts were tight and that all the lines are hooked up so theres no vacumm leak
BTW, its a quadra jet
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-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME Last edited by GREASEMONKEY72; 05-08-2007 at 12:46 AM. |
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#3 | |
Registered User
Join Date: Apr 2007
Location: Visalia, CA.
Posts: 327
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Re: running problem
Quote:
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#4 |
Registered User
Join Date: Jun 2006
Location: Indiana
Posts: 4,859
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Re: running problem
Floats sinking? Standard Q-jet problem. Worth a check anyway.
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'70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60 |
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#5 |
Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: running problem
ok ill check both
its just wierd because it doesnt always do it so its boggling my mind on what it could be air and fuel screws??= idle mixture screws?
__________________
-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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#6 |
Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: running problem
should i tweak it up and see if it still does it?
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-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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#7 |
Registered User
Join Date: Jun 2006
Location: Indiana
Posts: 4,859
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Re: running problem
If the floats are a bit heavy, they need replaced. A good time for that is when you have the car apart cleaning it. A carb kit is fairly cheap and can be gotten anywhere. The floats, you may have to order.
Of course the $200.00 fix is an Edelbrock 1406... ![]()
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'70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60 |
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#8 |
Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: running problem
i rebuilt the carb about 6 or so months ago and it didnt come with a float so yea id have to order one
__________________
-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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#9 |
aka TEX-TOY
Join Date: Jan 2007
Location: Kentucky
Posts: 127
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Re: running problem
try and check your vacum advance on the dizzy
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1969 Chevy C10 SWB w/ disk brakes and soon to be lowered with spindles and springs!!!! Getting a paint job like a Army Chinook Helicopter!!!! HOOKERS RULE!! ![]() BRAND NEW WIFE BOUGHT IT FOR ME AS A WEDDING GIFT!!! SHE IS THE BOMB!!!!!! ![]() |
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#10 |
Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: running problem
how do i do that without a vacum gauge? just unhook it and see what happens?
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-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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#11 |
Registered User
Join Date: Apr 2007
Location: Visalia, CA.
Posts: 327
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Re: running problem
yes the idle mixture screws.
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#12 |
Registered User
Join Date: Oct 2006
Location: Springfield, MO
Posts: 375
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Re: running problem
I have a quadrajet also. Mine does the same thing at all times (always have to 2 foot it).
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1969 C/10 swb, 350, powerglide (daily driver) 2005 CRV (wife's ride) |
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#13 |
Registered User
Join Date: Apr 2007
Location: Roselawn, Indiana
Posts: 60
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Re: running problem
dont forget to change the fuel filter(s) you may have a chunk of crap bouncing around that keeps getting in the way. It used to be a major issue when they started adding ethenol to the gas. It of course acts like a cleaning solvent and will loosen and gunk in the tank/lines/carb especialy now that in some areas they have the "special" summer mix that has even more added in.
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#14 |
Registered User
Join Date: Jan 2006
Location: Morro Bay C.A
Posts: 179
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Re: running problem
check vaccume leakes first of all tings... if you have a good vaccume gage
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'69 C10 SWB 350 edelbrock int/carb .420 .442 cam 700r4 70 lwb c10 work truck 250 I6 with two inch lift springs and a two inch bodylift and 33/12.5s |
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#15 |
Registered User
Join Date: Jan 2007
Location: South Florida
Posts: 158
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Re: running problem
It sounds exactly like the float is sinking. The foam floats will absorb fuel over time, get heavy and begin to sink causing the carb to dump fuel. The engine will load up and stall.
Change the float. I've had to change mine twice. You will feel the difference in weight between the new and old. Rob |
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#16 |
Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: running problem
sounds like the float then because the time i let it stall out it sprayed some fuel up out of the carb
would this affect the perfornmance of it to? cause the other day i got on it and it didnt pull as hard as it used to, so i checked the timing but its fine
__________________
-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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#17 |
Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: running problem
well i replaced the float and got it all back together and it did the same thing so i pulled it back off and checked the spec level on the float and noticed that the accelerater pump shaft was in the wrong spot so i moved it and put it back on the truck and it idled prefectly, havnt driven it yet though, you guys think the perfornmence will be back how it was before?
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-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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#18 |
Registered User
Join Date: Jan 2007
Location: South Florida
Posts: 158
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Re: running problem
Should run better now. You may have to adjust the float by bending the steel one way or the other depending if the motor starves for fuel at full throtle or the other way if it seems to still want to load up at idle.
Rob E. |
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#19 |
Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,212
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Re: running problem
My Vw dune buggy used to do the same thing, and it had a new carb on it. Never did figure out why she did it........
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#20 |
Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: running problem
well i took it out for a drive around the block and it doesnt pull as hard as it used to at all, the float level is at spec and the accel pump shaft is in the inner hole, could it be that or could it just be the heat lessening the power or could it be the plugs being dirty?
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-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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#21 |
Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,212
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Re: running problem
Probably a holley 600 would solve all your problems and then some.
![]() Last edited by JAKES 68GMC; 05-12-2007 at 09:28 AM. |
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#22 |
It's the air up here
Join Date: Mar 2007
Location: Western Colorado
Posts: 710
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Re: running problem
Unless you take the time to really get to know the Q jet carb, once they start messing with you, you are better off with a new carb. I would suggest the edelbrock 1406. Or trial and error your carb till it runs good, but it WILL mess up again!
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1971 cheyenne k10 4 speed np 205 454 BB factory a/c ![]() Never drink down stream of the herd! Eric |
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#23 |
Registered User
Join Date: Sep 2006
Location: New Haven, MO
Posts: 1,243
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Re: running problem
my dad swears by qjets he can tune them really well hopefully i will learn it two as long as you stay out of it gas mileage will be better than a holley
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#24 |
Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: running problem
the reason i havent gotten a holly yet is because of the mpg
but i drove it again tonight and at first it still wouldnt go, and btw i havnt done anything to it, but then on the way home i got on it and it went just like it used to, so that tells me its the secondaries not opening like they should is there an adjustment to help with the secondaries opening or what?
__________________
-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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#25 |
Registered User
Join Date: Apr 2006
Location: edmonton ab ca
Posts: 88
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Re: running problem
Id bet my money on either a float related problem or simple miss adjustments. call a parts guy and find out the presets and tweak from there.
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