poor acceleration - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gonzo6869 · 06-06-2009, 12:52 PM

I am a new member, so sorry if this has been answered already. I just got a 72 C-10 short steper. It has a 350 with comp hooker headers and a Eldebrock 1406 carb, it also has Weber stamped on the right side. Other then that it is stock. The problem I am having, when I step on it, it hesitates and I can hear a pop coming from the front, not really a back fire. Is there a simple adjustment I can make to the carb to fix this. I have changed the inline filter right before the carb, is there an other carb closer to the tank that I can change as well.
Thanks for the help.
Josh.

ProStreet83C10 · 06-06-2009, 05:09 PM

sounds maybe like the accelerator pump is out of it.

gonzo6869 · 06-06-2009, 05:40 PM

Thanks I will check that out.

BAGNDRAGIT · 06-06-2009, 05:43 PM

definatly start with tuning the carb and checking you ignition timing.
how are your plugs?
wires?
also the pickup screen in the tank could be all gummed up, maybe the sender..

i would start with the carb tho and changle all the fuel filters.

PanelDeland · 06-06-2009, 06:56 PM

There is also a fuel filter(unless it has been removed) in the carb behind the fitting where the fuel line goes in.It may be clogged or partially clogged.

Hoffman65burb · 06-06-2009, 07:42 PM

im with Bagndragit, check timing and tune the carb. My 69 shorty did that, i was only a few degrees off.

gonzo6869 · 06-08-2009, 12:56 AM

meant to ask if there is a second filter closer to the tank, not a carb.

Shyguy · 06-08-2009, 08:41 AM

Originally these trucks came with one fuel filter and that was in the carb, but over the years owners have added a second and maybe third one.

Normally if one is added it is between the pump and carb, but if the tank is expected to be dirty another one may be added between the tank and the pump.

Also start at the tank and check all the rubber hoses for cracking or kinking.

Danny

06-06-2009, 12:52 PM	#1
gonzo6869 Cops, ha, catch me if you can! Join Date: Jun 2009 Location: Santa Barbara, CA. Posts: 271	poor acceleration I am a new member, so sorry if this has been answered already. I just got a 72 C-10 short steper. It has a 350 with comp hooker headers and a Eldebrock 1406 carb, it also has Weber stamped on the right side. Other then that it is stock. The problem I am having, when I step on it, it hesitates and I can hear a pop coming from the front, not really a back fire. Is there a simple adjustment I can make to the carb to fix this. I have changed the inline filter right before the carb, is there an other carb closer to the tank that I can change as well. Thanks for the help. Josh.

06-06-2009, 05:09 PM	#2
ProStreet83C10 Drag Racer Join Date: Nov 2006 Location: Mason City, Iowa Posts: 1,276	Re: poor acceleration sounds maybe like the accelerator pump is out of it. __________________ Zach Hall 1983 Chevy C10 R/T: .194 60': 2.322 330: 6.379 1/8: 9.803 MPH: 71.37 1000: 12.781 1/4: 15.314 MPH: 88.79

06-06-2009, 05:40 PM	#3
gonzo6869 Cops, ha, catch me if you can! Join Date: Jun 2009 Location: Santa Barbara, CA. Posts: 271	Re: poor acceleration Thanks I will check that out.

06-06-2009, 05:43 PM	#4
BAGNDRAGIT Just Not Low Enough! Join Date: Mar 2009 Location: Phoenix, AZ Posts: 525	Re: poor acceleration definatly start with tuning the carb and checking you ignition timing. how are your plugs? wires? also the pickup screen in the tank could be all gummed up, maybe the sender.. i would start with the carb tho and changle all the fuel filters. __________________ NEED ELECTRICAL HELP? ASK ME! 67-72 Full Wiring Diagrams Lots Of Info, TAKE A LOOK 1967 Chevy C-10 Shortbox Bagged 327 4spd Previous: 1971 Chevy C-10 Short Sep I6 Auto (Traded) 1973 Chevy C-20 THE REDNECK BATTLE TRUCK 2001 Chevy Silverado 2Dr 5.3L Shortbox. R.I.P. 1969 Volkswagen Bug This is my first meeting, I have a horsepower problem.

06-06-2009, 06:56 PM	#5
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	Re: poor acceleration There is also a fuel filter(unless it has been removed) in the carb behind the fitting where the fuel line goes in.It may be clogged or partially clogged. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

06-06-2009, 07:42 PM	#6
Hoffman65burb Registered User Join Date: Jul 2008 Location: Vancouver BC Posts: 448	Re: poor acceleration im with Bagndragit, check timing and tune the carb. My 69 shorty did that, i was only a few degrees off. __________________ 1978 GMC Jimmy 454bbc Turbo400 NP205 3.73 gears 4inch lift 33's

06-08-2009, 12:56 AM	#7
gonzo6869 Cops, ha, catch me if you can! Join Date: Jun 2009 Location: Santa Barbara, CA. Posts: 271	Re: poor acceleration meant to ask if there is a second filter closer to the tank, not a carb.

06-08-2009, 08:41 AM	#8
Shyguy Junior Member Join Date: Dec 2006 Location: Southeast Missouri Posts: 2,436	Re: poor acceleration Originally these trucks came with one fuel filter and that was in the carb, but over the years owners have added a second and maybe third one. Normally if one is added it is between the pump and carb, but if the tank is expected to be dirty another one may be added between the tank and the pump. Also start at the tank and check all the rubber hoses for cracking or kinking. Danny __________________ '67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E.



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