OK...This problem has always been there since I bought it 2 years ago but in the 2 weeks or so it's getting super bad! After the car warms up the engine starts to jump...it usually happens when Im slowing down, idling, or starting to move. The idle jumps and it constantly does it and on the down side of the jump sometimes it stalls. It doesnt do it when i get going. It gets so bad it constantly does it and I have to start the car again and again! What could it be???
2007-08-20 03:00:27 · 5 answers · asked by sue666 1 in Cars & Transportation ➔ Maintenance & Repairs
sounds like a carburator problem to me, get a can of spray gumout cleaner and work the throttle as you spray the cleaner into the carb (car running), then take out the idle screws and spray inside the holes real good and reset the idle screws after reinstalling them using a vaccum gauge or a tachometer.
2007-08-20 13:23:45 · answer #1 · answered by mister ss 7 · 0⤊ 0⤋
The posts about the timing chain sound correct. And I would differently check the motor and transmission mounts. But, I would consider the the float in the automatic choke on the car. As the engine warms up, the float can start to "take on gas" and then it will act in the opposite of the way it is supposed to work. It is a long shot, but I had a similar problem in 1970 Chevelle. Good Luck.
2007-08-20 11:55:50 · answer #2 · answered by sfcjcl 5 · 0⤊ 0⤋
By your description I'd certainly inspect the side motor mounts as well as the transmission tail-shaft mount. If the motor is skipping or missing spark plug wires, spark-plugs distributor points, rotor and cap may need replacement. Occasionally a slight intake manifold vacuum leak will make a motor miss-fire and of course 'JUMP AROUND" as the tune goes.
If this problem persists I'd have the timing chain and sprockets inspected and changed if necessary.
2007-08-20 10:16:19 · answer #3 · answered by Country Boy 7 · 0⤊ 0⤋
The blend of gas these days has an early boil point and is tough to get a handle on. Insulate the fuel lines, put a good spacer between carb and manifold, and you may even try installing an electric fuel pump to keep the pressure on the fuel to resist the boiling.
2007-08-20 10:14:09 · answer #4 · answered by done wrenching 7 · 0⤊ 0⤋
Sounds like a timing chain. When it gets hot the chain stretches causing to run rough with either a fast idle or rough idle. The will cause also a lack of power.
2007-08-20 10:08:08 · answer #5 · answered by viper_64 2 · 1⤊ 1⤋