engine cuts out?

[1BadBowTie]

hey got yet another question for yaz, when ever my truck sits for more then 30 mins after i go to drive off it feels like the engine cuts a 1/4 of its power right after i hit the throttle?? has any one else had that. it clears up once u hit the gas a lil harder, but i'm also averaging like 13-14 mpg so im wondering if they are connected? ha i'd still rather get 13 mpg with my truck than 30 with a toyota, lol

[2000CAYukon]

Fuel Pressure regulator or stuck injector. Pull the vacuum hose on the regulator, if you see gas, the diaphram is leaking and needs to be replaced.

//2000CAYukon

[LongIslander26]

Originally Posted by 2000CAYukon

Fuel Pressure regulator or stuck injector. Pull the vacuum hose on the regulator, if you see gas, the diaphram is leaking and needs to be replaced.

//2000CAYukon

Your throttle body may need to be cleaned as well. I believe there was a TSB about that.

[1BadBowTie]

i just replaced the fuel pressure regulator like 1000 miles ago, so i know it cant be that, i cleaned out the throttle body not long ago but i guess it could be time again

[2000CAYukon]

Originally Posted by 1BadBowTie

i just replaced the fuel pressure regulator like 1000 miles ago, so i know it cant be that, i cleaned out the throttle body not long ago but i guess it could be time again

Pull the vacuum hose to be sure. Also, if you have a fuel pressure tester, hook it up and start the engine. Shut off the engine and watch the pressure. It should hold. If it drops off then it the regulator or leaking injector(s).


//2000CAYukon