i have a 2005 f4i, and when i first take off in 1st and 2nd gears it kind of boggs and has hesitation. it has 10,xxx miles just recently did oil change. but not sure what's the problem after low rpms it runs ok. there is a gas smell that stays on my clothes after. i need help with any suggestions.

 

Sounds like your fuel pressure regulator. Here's a write-up by FLYOU (link).

 

It sounds like the FPR, but how much oil did you put in?

 

its been like that even before i did the oil change, i put 3.5 qts

 

test your fpr

 

how would u test it ..

 

today i put fuel objectors cleaner and it helped out a lot.. there still jus a little hesitateion in 1st but better than before...

 

pull the vaccum line off the left side and see if its wet (off the fpr)

 

well yesterday i changed my airfilter to a k&n and since it was there i took off FPR and tried cleaning it and put it back on. well then i went to ride and the hesitatijn is still there, alsi my rpms ard a little higher than before, like close to 2k rpm @ idle.. i tried adjusting idle but i think i lean it out to much cus tempetures were rising like 227-229. so i adjusted a little more and i think ifound a good spot. But do u think its because of the k&n filter? why would my rpms be up? nd the hesitation?

 

did you try this? i don't think you can clean a bad fpr or there would be a lot of threads about doing it that way