I go from 55 mph to 25 and thats at full throttle.I changed fuel filter and spark plug did not cure the problem.Can you help
Have you noticed black exhaust smoke and/or smell fuel? If so the engine may be running rich which could certainly cause a lack of acceleration.
Is the CEL ( Check Engine Light ) on? If so, have the vehicle scanned.
Is the idle smooth and does the engine rev freely? If no to either or both, you may have a vacuum problem.
It could also be a clogged catalytic converter, or clogged gas tank vent lines. Remove the gas cap after the car slows down and you pull over. Do you hear a wush sound from air rushing in? If so unhook the vent line(s) at the charcoal canister and use compressed air to blast out dirt. As for the clogged cat. remove the front O2 sensor and try driving. If the car doesn't slow down now, replace the catalytic converter and re-install the O2 sensor.
Hello,good day,filter and plug is replaced,if you could check the spray pattern of your fuel nozzle,maybe you find a defective one or rubber seal of your nozzle is worn out,or your check your fuel pump capacity,some workshop have special tool to check the fuel distributor for proper function,,ty
You may have a bad injector
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with an unexplained loss of power one of the first things to check is vaccuum pressure. do you have a leaky vacuum hose?
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