I have popped my stock fuel regulator off had a fuel spike and lost a piston. I was told fuel reg. rans off vacuum and the turbo might be charging the fuel system and that's why it blew off. Is this possible?? Also, my BOV and wastegate are on the same vacuum source do they need to be seperate? Regulator came off around 4200 rpm of 3/4 throttle not really raising hell.

 

hate to hear you had troubles.
hmmm I thought there was a snap ring holding that together. I have never heard of that.
BoV and Gate can be on the same port. I have ran them both off the same rear vacuum port on the intake, with no troubles.
Some run the gate off the turbo and bov off intake.
BOV has to be off intake vacuum.

 

The snap ring was still there. I don't know it happened, but that's my luck. Thanks for vacuum answer.

 

I've been running boost into the stock fuel pressure regulator for 5 years with no problems. Did the fuel regulator come apart, or did the line just come off of it?

 

Say it aint so!!
Was the regulator taken off at some point and not reinstalled correctly??
Sorry to hear of your problems.

 

What actually came was the vac. line on the top of the regulator, not the regulator itself. I'm sorry for being misleading. I think it might be a fueling problem. Now, since that has happened the truck is searching to idle and if you give it any gas over have throttle it starts to backfire. It keeps shuting off at redlights. I'm going to pull fuel pump and check to see of everything is connected right. I also have an extended crank so, I need to check the check value anyway. Plan on doing all this when I pull the motor for a rebuild but, I'm in the middle of a mill shutdown right now so limited on time.

 

I have both the BOV and Gate off the back of my intake.

Do you have any way of logging engine parameters? Do you have HP Tuners or EFI Live? If not I recommend getting either one and getting ahold of a tuner that can help you on line like Nelson or Wheatley.

Sorry to hear about the piston...

BTW, I have extended family in Baxley / Surrency area...

Good Luck bro
Bill

 

If you blew a piston how do you know for sure? Did you do a leak down? Inspect it and see some schrapnel?
I would start looking at ANYTHING that was messed with during your install instead of taking your pump in tank apart, that alot of work, unless that was messed with during the install.
Do you know exactly everything your builder did when he was doing your install??
Hate to see you go down a road of checking every little thing for no reason but that may be the case if you don't know what they touched and what they didn't.
Man this sucks.

 

The truck was actually being data logged with HP Tuners when it let loose.
Surrency is about 14 miles away from me

The new shop did a leak down when I got the truck back from first shop. Everything was fine. I was hoping for a bent pushrod so, I pulled them and all were fine. Now the truck is starting to smoke alittle plus the drum solo I have when I crank up leads me to think rod or piston. I don't know exactly everything first shop did or I should say how it was done, I wish I did. There are some clearance issues and steering shaft shrubbing so, I'm going to redo all piping and manifolds anyway

 

For your new set-up i would get a wide band and fuel pressure gauge so you know what going on.