Oil leak from the cover post i made acutally turned out to be the head gasket. Taking care of that. Just finished pullin it off... The TST misfire i've been having heres the news...

BACKGROND...
TST reports the box is designed for a stock motor and not to be stacked with. they also say every power add on you have done to your truck pre or post tst...The lower level the box must be ran on to avoid misfire.

THE EXPERIMENT....
Put my TST comp in a friends truck with the same sticks as mine...Put my smarty in his truck as well...He even had his edge EZ in there as well. Technically his truck should have been running like crap if tst was right.

VERDICT...
His truck went really fast. I'm very upset about this. He ran TST comp on 8 &9 smarty on 8, EZ plugged in, and the 125 sticks and it was incredible. Very smooth and responsive power. His truck pulls very nice through all 5 gears. The only difference is his is an 02 5spd. mines a 98.5 auto.

I pulled off my VP tonite as well and will pick up a replacement tomorrow. I have to have a weak vp. I tried his regular tst 3 and i still couldnt run on a level above 3 w.o misfires. Does this sound like a good test? and one more thing....Any one experience #6 injector being covered ALOT more oil than the other 5 when removing it?

 

Is this first hand info ? That dont sound right at all 1000's of people are stacking with the Smarty , The Combo is said to be better than Edge Smarty Combo

 

YES it is first hand info. I will be picking up the new VP tomorrow. I've already traded it out but havnt picked up the new one yet. I'll have more info when i get all my head work done from Hamilton and get the truck running.

 

If it's not to late this sounds like another regulator valve problem more then an actual VP itself. I'd bet it's stuck closed and holding to much internal pressure on the VP. This forces to much fuel into the sticks and keeps pushin fuel after the burn cycle should be completed and it's overlapping into the exhaust cycle. With warmer weather comin on the engine and fuel temps are getting hotter which means that there will be a cycle of problems with these valves, the VP's themselves, Radiator caps and thermostats.

 

But to fix the Regulator problem...Wouldnt I have to change the VP? I've never heard of this before. It would explain why my truck runs like crap even though i've dropped 6g's in it this year. between the trans, turbo, vp, and box. I've been really upset knowing i throw all this on my truck for it not to work and it did wonders on my friends truck. Where is this regulator at for the VP? Your not to late, I'm taking my Head to Hamilton tomorrow morning at 6am for some work and to have rings put in. I'll have my truck down for another week probably. Plently of time for me to play with things like this. please get back to me on your idea. any info helps. thanks.

 

It's the banjo bolt on the outgoing fuel side of the VP. If you pull it off you will see that it has a spring loaded ball bearing in there that opens and closes. It's a simple design that is intended to hold the internal pressure of the VP at 14psi. But if it sticks open or closed or even if it just hangs up it screws up the whole operation of the VP. Been a good many $1000 pumps changed out for no reason other then this $30 valve being bad.

 

Thats funny....At least my pumps under warranty and i got a new one for FREE!. I'll be sure and look at that next time. When I was dropping off my head at Hamilton Diesel to have some work done to it he mentioned a bad fuel filter and said some things about Fass or Airdog. I told him i have a pusher pump on the frame and a low pressure light. (5psi warning). I bought a Fuel Gauge today just incase but The low pres light has never came on. I dont even have to step on it that hard for it to choke on me. Thanks for the info.

 

I found out about this from an authorized Bosch repair shop. My truck was dead for a few months and nobody, dealers included could figure out why. So we pulled every single part on that truck that touches fuel and took it into this shop for them to go over. This regulator was one of the problems we found. Then he explained it all to me and said he couldn't even count how many pumps they have gotten back a cores through the years that were in complete working order when they bench tested them. These regulators go bad and the first thing everybody wants to do is put a new pump in instead of trying this little 10 minute fix.

 

Man, I can see THOUSANDS of pumps being replaced because of that. I normally start small like the filter and then go up. I had my truck down a week before condeming the VP. But like i said since its under warranty...Why not... thanks for the help again. I'll have the new one on tomorrow and I get my head back on thurs and will let you know.

 

Okay, The truck is just about complete now. I got the Rings, Studs done to the head and threw on a new vp while it was down and also a fuel pres, gauge. Tomorrow i'll have a few experiments going but i cant stomp down on her just yet. I still got one more re-torque to go and re-adjust. Speaking of re-adjusting the valvs, My #1 intake is supposed to be at .010........It was at .049. IDK HOW my truck was even running. Theres my knocking noise.