so i finally had a chance to use my 75 shot wet last night after a couple weeks of not spraying at all. bottle pressure was good at around 1100 psi according to the gauge. so i sprayed it in 3rd gear and then i turned it off. i put the car in neutral and for some reason the car stalls. i crank it back up and the motor is really sputtering and makes a really raspy sound like it's hesitating. i also have to give it a bit of throttle to keep it from stalling again. so i'm driving down the hill towards my house and i keep it in gear and it's really rough like there's some kind of fuel issue (maybe?). this lasts for about 30-45 seconds total and then the car runs normal. do you guys think i need a fuel pump as if the fuel solenoid is sucking up too much fuel? any other ideas? thanks in advance

-marc

 

you shouldn't really need a fuel pump, my buddy and i sprayed a 75 shot for 2 yrs. without upgrading the pump. did you get colder plugs?

 

I say check your plugs first.

 

I would change the plugs, but it actually sounds like you are running really rich on top end. I wouldn't say it's good, but it's definitely better than running lean.

 

i just changed the plugs recently when i upgraded to the 75 shot so they've only been sprayed on twice. it's my second set of bkr7e's. it doesn't hesitate while im spraying so i think the problem is that there's not enough fuel. im going to try pumping up the fuel pressure with my FPR and see if that makes a difference.

-marc

 

bottle pressure = 950 psi.

drop the bottle pressure first.