2 barell carb. HICCUP??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Malibob · 06-12-2010, 11:53 PM

After buying new plugs and wires and adjusting the fuel mixture I get an awesome idle. The problem is when I hit the gas, the engine brfiefly accelerates then hiccups then continues to accelerate. It is worse when I am in gear and driving. I used to have a high idel and no acceleration problem. What do you guys think it is??? Oh yeah it starts on a dime now too so I dont think it is the fuel pump, but maybe?

Rich 5150 69 · 06-13-2010, 02:42 AM

Check accelerator pump shot in carb, look down the carb with engine off, and pump the throttle slowly, you should have a steady stream of gas in the carb, if not then the pump sleave on the inside is damaged, or there is junk down in the pump well impeading the flow.

Malibob · 06-13-2010, 01:32 PM

Great, had it rebuilt last year so I didnt even think of that but you are probably right.

protrash64 · 06-13-2010, 04:32 PM

I think Rich 5150 69 is correct; or the pump needs an adjustment. The engine needs the extra fuel to compensate for the air when you press the accelerator.

06-12-2010, 11:53 PM	#1
Malibob Registered User Join Date: May 2009 Location: Pittsburgh Posts: 392	2 barell carb. HICCUP??? After buying new plugs and wires and adjusting the fuel mixture I get an awesome idle. The problem is when I hit the gas, the engine brfiefly accelerates then hiccups then continues to accelerate. It is worse when I am in gear and driving. I used to have a high idel and no acceleration problem. What do you guys think it is??? Oh yeah it starts on a dime now too so I dont think it is the fuel pump, but maybe? __________________ This statement was made possible by a grant from this station and continued support from viewers like you. Flickr

06-13-2010, 02:42 AM	#2
Rich 5150 69 Registered User Join Date: Nov 2009 Location: Galt, Calif Posts: 2,437	Re: 2 barell carb. HICCUP??? Check accelerator pump shot in carb, look down the carb with engine off, and pump the throttle slowly, you should have a steady stream of gas in the carb, if not then the pump sleave on the inside is damaged, or there is junk down in the pump well impeading the flow. __________________ `64 C10 vortec 350/350/373 posi `69 RS/SS 350/350/308 `37 Ford 406/350/324 traclock `68 Dart 370/904/323 suregrip

06-13-2010, 01:32 PM	#3
Malibob Registered User Join Date: May 2009 Location: Pittsburgh Posts: 392	Re: 2 barell carb. HICCUP??? Great, had it rebuilt last year so I didnt even think of that but you are probably right. __________________ This statement was made possible by a grant from this station and continued support from viewers like you. Flickr

06-13-2010, 04:32 PM	#4
protrash64 Resistance is Futile Join Date: Dec 2006 Location: Mesa,Arizona Posts: 3,520	Re: 2 barell carb. HICCUP??? I think Rich 5150 69 is correct; or the pump needs an adjustment. The engine needs the extra fuel to compensate for the air when you press the accelerator. __________________ 64 CHEVY PICK-UP > http://67-72chevytrucks.com/vboard/s...otrash+re-hash 64 CARRYALL >http://67-72chevytrucks.com/vboard/s...=1964+suburban 66 LB >http://67-72chevytrucks.com/vboard/s...d.php?t=427852 STRENGTH/DETERMINATION/MERCILESS/FOREVER .......posted via stationary device

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