Acceleration Noise

[Anonymous]

Hey guys,

I've been having this problem with acceleration. My car is all stock, the engine is not rebuilt, same from 1966. I'm not sure whether it's a problem or not but, when i push on gas hard to get the car moving on to traffic there is this noise that comes from the engine. When I step on the gas lightly i can barely hear the noise. The engine makes and rattling rev noise. I mean I know the car and engine is old but it's like the car has no acceleration power for hills or even going onto the freeway. I'd say it takes about a good 20 seconds to get to 60 mph without causing the engine to make that noise.

I know I haven't given a lot of information, but any of you guys have any idea or just some general feedback, that'd be great.

Thanks,
Bryan

 

[DYNOED250]

check youre ignition timing, it sounds like the motor has to much advanve... it could be fine at idle say 6-8 degs but if it has a broken spring in the dissy or a worn spring, it could be giving the engine to much advance to early in the rev range, to check this get a timing light , disconect the vac advance, a pen and paper and, for every 500 rpm , write what youre advance is, then post the results... i havnt had much experiance on the american motors, with youre grade of fuel , but id say you wouldnt want to be much of 30 deg totall, i may be right of with that figure, but it should get u in the ball park,

 

[rbohm]

8) you may have the same problem my falcon has, a bad head gasket.

 

[BIGREDRASA]

You're probably carboned up. Try running a higher octane, until you can "decoke" the engine. There are numerous posts here on water injection.

 

[CobraSix]

Check your timing, pull your plugs, check your rotor and cap for wear and tear. Sounds like you may be knocking a little. Try a higher octane fuel as well.

But...it could also be an exhaust leak. It sounds like a knocking. My car has a good exhaust leak right now that is really loud on heavy acceleration. Double check your exhaust bolts and retorque them to spec.

Slade