Lack of power when accelerating

fuel filter needs replaced or fuel pump

Lack of fuel due to dirty injectors, fuel pump or filter. Lack of air from dirty filter. Plugged up catalytic converter

Get the car scanned and see what fault codes appear. Coil packs often fail causing power loss. It doesn't explain the fuel smell but to be safe check there are no leaks in the fuel system/pipes. The system is under a lot of pressure so a leak should be obvious, when was the fuel filter last changed?

When you say wont accelerate does the RPM flares that would be the transmission slipping, or you step on the pedal all the way and the vehicle has lack of acceration you can hear a hissing noise that would be a plugged exhaust.Here the thing you related it to fuel has the problem on the ignition coil is a powerstage if this stage acts up it allows you to accelerate you just dont go anywhere it back fire through the intake that would be the power stage it located on the ignition coil

Motor mounts while cause a clunk noise while accelerating, but only once. I would suspect your fuel filter firstly is partially plugged, especially if it lacks power. If the jerking you are talking about is only present under acceleration or under load, such as climbing a hill. Then I would suspect a misfire, like a bad spark plug or wire shorting out. At 150,000 km if you haven't had a tune-up yet, I would highly recommend it. It is something you can do yourself and save the money. If you prefer not to, don't go to Midas. Go to a local respectable shop, and get a tune-up. It will include a fuel filter.

suggestion.. lower exhaust pipe and drive car with exhaust disconnected, a possible clogged cat. converter.

Replace the the spark plugs and wires. That sounds like a faulty plug wire(s). **Please rate me on this answer**

Any trouble light? Sounds like it might be misfiring during acceleration which is more related to ignition quality than timing. Check the spark plugs--if badly worn, replace them. Might need new spark plug wiring. Check the air cleaner. Replace the O2 sensor if the truck has a lot of miles. Look for loose or cracked vacuum hoses.

Even tho the ignition seems ok, I'd check the ignition cables to the plugs. Sometimes these break down over time... it will idle and drive ok, but when you need power for a hill, or acceration, that's when the wires faults start to show up.
A quick test is to put the car in drive with your left foot on the brake FIRMLY while you press the accerator... if the miss and lack of power shows up, it's usually the ignition cables to the plugs.
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how old is the car? when was the last tune up done? does it make any sound when you hit the gas hard? any questions you can email me at [email protected]