HELP!!! Vortech SFMU tuning and other problems

Cbussilver01es · Post by **Cbussilver01es** » Sun Aug 02, 2009 10:32 pm

Hey all, as you know I was workin on a head swap and turbo set up,

Well I tried to fire the car up tonight, and it took a while to turn over but it did, but now Im having some problems, after the car turned over, it kept dying like it was getting too much air or not enough air, and the wideband was reading 14:7 for a while, but then it the afr's started to jump into the 16-17-18 range and I freaked and shut off the car. My fuel pressure on my gauge wasn't hardly reading anything, like around 5psi if I remember correct. and then after I shut off the car a MASSIVE amount of oil started to leak out of the oil feed line that I connected to where the oil pressure sender was.. Any ideas on how I can tune the afrs and keep the oil from leaking? My fuel system consists of a vortech sfmu, 40/hr accel fuel injectors, spoolboy modded canister w/Walbro 255.

O also one last note, when I was swapping the head and changin timing belts, I tried to line the cams up the best I could @ TDC but every time I tried to put the belt on the timing marks were not perfectly across. They were within about 1/2 of a tooth but when the crank was turned to line up TDC the cams where right on, but the crank was off maybe about 1/2 from TDC. Im so confused guys I thought I did everything right.

hul kogan · Post by **hul kogan** » Mon Aug 03, 2009 9:45 am

Wow, that is pretty low fuel pressure. Did you crack open the Vortech at all? I have heard of people doing so and then re-assembling incorrectly and running into fuel pressure issues.

What tuning ring(s) are installed in it?

Cbussilver01es · Post by **Cbussilver01es** » Mon Aug 03, 2009 11:42 am

yea actually I have, I had to change the discs, before Installed it, I have the 5:1 disc in there now, one thing I didn't do is tweek the vacuum needle with the allen key which may also be a contributing factor

when I get home from work, I'll check, and see if that changes anything. I did see where my oil was leaking out of in the feed line, so thats a plus.

hul kogan · Post by **hul kogan** » Mon Aug 03, 2009 12:08 pm

Yes, I would definitely tinker with the adjustments on the Vortech. See if that brings your fuel pressure up.

Are you sure you got everything back together correctly when you took it apart? Since it is a bit of a PITA when you initially start all the screws and it starts clamps together, you can pretty easily get a fold in the blue membrane and that will cause issues. Give that a look to make sure.

Cbussilver01es · Post by **Cbussilver01es** » Mon Aug 03, 2009 6:16 pm

idk what it is man, I tried loosing up the screw and messing with the vacuum port but nothing worked, it still is reading my pressure at barley 5psi, when I tweak the throttle it goes up but then falls back down to almost nothing and the car is idling real rough like it has a huge cam, and it doesn't Im stumped I have no idea what to do, oh and to make things worse, I don't hear the fuel pump prime when I turn the key anymore, and I used to hear it after I turned the key to acc. I guess what Im tryin to figure out is how to set your base pressure.

hul kogan · Post by **hul kogan** » Mon Aug 03, 2009 7:59 pm

Well, the static pressure is set with the adjustment screw. The big one on the back that can be turned with a hex key (it utilizes a jam nut to hold steady). Simply loosen the jam nut and start turning the screw. Keep an eye on your fuel pressure gauge, with the car idling, and adjust/set the base accordingly.

Do you have the standard spring?

Are you running the spoolboy modded canister with a stock pump, or a 255? I'm concerned that you aren't hearing it prime...especially if you have a 255.

Cbussilver01es · Post by **Cbussilver01es** » Mon Aug 03, 2009 8:15 pm

hul kogan wrote:Well, the static pressure is set with the adjustment screw. The big one on the back that can be turned with a hex key (it utilizes a jam nut to hold steady). Simply loosen the jam nut and start turning the screw. Keep an eye on your fuel pressure gauge, with the car idling, and adjust/set the base accordingly.

Do you have the standard spring?

Are you running the spoolboy modded canister with a stock pump, or a 255? I'm concerned that you aren't hearing it prime...especially if you have a 255.

Yea I heard it prime after I posted that. Anywho it doesnt really matter seeing that my engine bay caught on fire and basically torched my engine, and when I mean fire Im not talkin a little flame, Im talkin 5' high flames, so now I will be looking for an srt long block and see if the turbo is still salvagable.. everything else looks fine but my electrical stuff and engine compartment is done... Im still in shock right now.

neonslg09 · Post by **neonslg09** » Mon Aug 03, 2009 9:44 pm

are you serious?.....

i would be at major/unreal blown status right now.

Cbussilver01es · Post by **Cbussilver01es** » Mon Aug 03, 2009 9:55 pm

neonslg09 wrote:are you serious?.....

i would be at major/unreal blown status right now.

Im at a loss for words this is all unreal to me, I really can't believe that it actually just happend...

ragek23 · Post by **ragek23** » Mon Aug 03, 2009 10:37 pm

Are you at least ok?

neonslg09 · Post by **neonslg09** » Mon Aug 03, 2009 10:46 pm

ragek23 wrote:Are you at least ok?

x2, hope you didnt get burned or anything.

im shocked as well.

Cbussilver01es · Post by **Cbussilver01es** » Mon Aug 03, 2009 11:32 pm

ragek23 wrote:Are you at least ok?

Yea my hands are a little raw and hurt but Im ok for the most part.

hul kogan · Post by **hul kogan** » Mon Aug 03, 2009 11:43 pm

OMG dood, that sucks. Any idea what happened? Glad you are alright, though.

Did this happen in your driveway?

glasswars · Post by **glasswars** » Tue Aug 04, 2009 12:23 am

Holy crap man. That's nuts. Good thing you weren't hurt extremely. That's why I'll always have an extinguisher in the car.. at this point I say swapping an entire motor is your only option. Completely tear the bay out.

Cbussilver01es · Post by **Cbussilver01es** » Tue Aug 04, 2009 8:01 am

yea this all happened in my driveway. All my wiring melted, my rad fan warped because of the heat. It looks like some oil that was sitting under the car is the culprit. I just wonder what could have ignited it. Im still soooo clueless on the whole thing. The head and the turbo seem to be alright along with my batt and other stuff. But now I think it just might be time to swap it, even though I have no idea where to begin. I figure if I need a new wiring harness then I might as well swap the motor for an srt.

Cbussilver01es · Post by **Cbussilver01es** » Fri Aug 28, 2009 8:14 pm

UPDATE:

Ok I salved what I could of the wiring harness and bought a new radiator fan and basically have everything hooked up and I go to try to "pressurize" the fuel system and what do you know nothing.. 0 psi, now I know that you can set static pressure on the Vortech, but for some reason my gauge just keeps reading 0 psi, and I know that fuel was in the rail and even getting to the gauge, because it started leaking a lil bit from right around the regulator. I just don't get it... Is this thing broken?? Im going to get rid of it, I cant risk having another fire because Im doing something wrong, or that the regulator is broken. Someone help, seriously. How do I set static pressure, or how do I even begin to operate this FMU? I just don't understand it.

INVUJerry · Post by **INVUJerry** » Fri Aug 28, 2009 8:30 pm

Do you have a 1:1 as well as a rising rate? You need both. One to set base, one to set gain.

Cbussilver01es · Post by **Cbussilver01es** » Fri Aug 28, 2009 8:34 pm

invujerry wrote:Do you have a 1:1 as well as a rising rate? You need both. One to set base, one to set gain.

I have the Vortech SFMU, the one that can set base and rate of gain, Im hoping its not a knockoff bc I paid $200 dollars for it off of eBay.

what bothers me the most is that I know that there is fuel in the rail and the lines, but yet my pressure gauge still reads 0.

INVUJerry · Post by **INVUJerry** » Fri Aug 28, 2009 8:39 pm

Have you put a check valve in the pressure line so it's not reading a vac? Or does it not need one?

Cbussilver01es · Post by **Cbussilver01es** » Fri Aug 28, 2009 9:03 pm

no, I havent, it came with a little restrictor and thats what I have on the signal line.