Engine sputters and lacks power when I floor gas pedal?

Question

Have 1970 350 engine with rochester carb when I accelerate hard cars bogs sputters until i let of gas. When car is in park you can hammer accelerator and it runs like a champ

Answer 1

Engine sounds starved for fuel. In neutral, the engine experiences no load, so even at high revs, it virtuall sips gas, compared to trying to accelerate with the weight of the car.

Lots of possible causes, like clogged fuel line or fuel filter, leak in the fuel line sucking air, etc.

Had a 96 Voyager that had computer problems causing a similar problem with this. Couldn't find the part so I had to junk it.

Answer 2

The engine desires to maintain the air/gasoline ratio. If it gets it incorrect, your engine will run prosperous/lean and would reason harm. Your accelerator, until you have a trendy motor vehicle withcontinual-with the aid of-twine technologies, is hooked as much as the throttle. The throttle throttles the air it is sucked into the engine. the quantity of air it is sucked in is set with the aid of the engine velocity (and because you're pressing the accelerator, the motor vehicle is acquainted with you desire to flow quicker). in case you open up the throttle to soak up extra air, the engine will compensate with the aid of including extra gasoline to the combination. If the motor vehicle would not flow quicker once you floor the gasoline pedal, it is maximum probable because of the fact the motor vehicle is interior the incorrect kit. (different situations may be going one hundred twenty+ mph and not being waiting to overcome wind resistance, etc.) automated transmission vehicles would desire to downshift whilst necessary. in case you have a handbook transmission, you will would desire to downshift. otherwise, with the aid of being interior the incorrect kit, your motor vehicle won't have sufficient "leverage" to flow the capability from the engine to the transmission. The engine and the transmission are 2 diverse aspects with diverse applications. The engine makes capability, and the transmission converts the capability to torque to spin the wheels. only because of the fact the wheels are not shifting quicker does not advise the engine isn't working (think of putting the motor vehicle in impartial, and then rev the engine). The gears are what transfers powers between the engine and transmission. incorrect gearing interprets to inefficient capability flow.

Answer 3

Sound to me like you have a fuel blockage. Check the fuel filter and the air filters first. If they are OK then it may be the fuel pump or carbi that need to be overhauled

Answer 4

How about a problem with the carb? Is the timing correct?

Answer 5

check fuel filter, fuel pump