I know the line in the tank is good because i put the intank pump in while it was on the dyno and the super charger is a mp112 i belive because it has the j shape to it. Off topic because but is this better or worse than the 1900? also the fuel filter was the first thing that i replaced. How do i check the regulator? What am i looking for? Sorry for the 20?'s

 

Also I know Foose04 has a much much bigger/ better (and cooler if i might add) but he is running dash 8 (1/2") fuel lines, could this be my solution or one of them if i have multiple problems?

 

The 112 is a smaller unit then the mp122 and 1900-2300's. Stock fuel lines are good to 1000hp I doubt it is the lines causing the issue. Next is the FPR. If you say all the other things are good.

 

The answer is certainly not to upgrade your fuel lines. Many, including myself, have gone pretty far on the stock fuel lines.

To check the regulator, first pull off the vacuum hose after the engine has been running, and check for fuel. If anything is there, replace it. Next, you can remove the regulator and check the o-ring for damage that may allow a vacuum leak.

Also, those hoses come off easier than you think. Many people have chased their tails for weeks over this. They were also "positive" that it was okay......however......

BTW, what year is your truck? I suppose it's possible that you have a returnless system, but I assume that you do have a return system, since you installed an inline pump.

Roger

 

I have a 99 sierra and it does have a return line. I will check the Regulator. So basically after its warmed up i pull the vacuum line and check for fuel that has bypassed into the vacuum line? But also back to problem of not holding line pressure? could that mean anything or is that totally unrelated?

 

No Fp in the line after it has primed, is a leaky injector or the check on the pump is not working properly. But if you did a 255 intank you did away with the check..

 

^^^What he said^^^

 

alright good to know and also i looked up FPR problems and it learned it can lead to hard starting. I have starting issues sometimes but brushed it off as in the magnacharger instructions it says it is normal with a supercharger. I am hoping this is my culprit gentlemen. I will check it and even if i don't think its bad i might replace it anyways but at $50 for a walnut sized part is kinda dumb but i hope it is my problem.

 

A starting issue could arise from you not having FP. I have to prime the pump 2 times on some instances so it gets FP.. Try to cycle the key 2 times, I bet it will start alot better

 

well thats what i have been doing so it sounds pretty promising that the fpr is my culprit. I will pick a regulator up tomorrow and replace it anyways. I will post tomorrow and let you know what happens. thanks