I have a 1998 f-150....205000 miles..runs good except for one little thing.when i accelerate from a stop i shift from first to second without bogging engine i notice as i accelerate it seems to hesitate then quickly gains power.It does this at every gear shift...all the way to 5 (overdrive)...I would like this quick power gain to happen as soon as i shift into a gear...can anyone help please????stock 4.2l v-6 flareside 5 speed

 

ehhh change the gears....

 

205k...

You might want to run some fuel injector cleaner in the engine and get some premium grade gas and see how it runs after that. I had that problem on my '99. Until one day I decided to let the truck run to a little less than a 1/4 tank, put 4 bottles of the STP Complete Fuel System Cleaner in it, and ran it for about 20 miles hard. It will puff black smoke and smell like a diesel, but that is the carbon and soot being burn out of the engine. After I ran it through, I then filled it up with Premium 93 Octane from a reputable Sunoco station.

Ran better than new and my mpg went way back up.