Running Rich

[jiacono]

Ok, I just had the VS Camp, Powerdyne SC (running 5/6 psi), Crane FMU, BOV,Pacesetter headers, 3inch Flowmaster exusht, Hi flow cat, NGK plugs....AND now my mechanic is telling me my baby is running extremly RICH at 60 psi (fule pressure) at idle. As a result the car is stalling out. ANY IDEA WHAT"S CAUSING THIS??? HOW CAN I FIX IT??

PLEASE HELP SOMEONE!

[mattsv6]

make sure the return line for the fuel pump isnt crimped or bent. that will cause the pressure too jump way the hell up liek that. good luck bro.

[Tiago]

sounds like the FMU is installed backwards. the inlet-outlet are switched around on teh fuel line.

[Riles]

Do you have bigger injectors? Because if you don't, you cant be running rich! If you are at 5-6 psi of boost, 60 psi is closer to the lean side. Especially if you are running a new cam!

I am running a powerdyne, and I can't get the damn fuel pressure OVER 60 psi, even when I hit 8 psi of boost, so it looks like I'm going to have to get a new fuel pump.

EDIT: Nevermind, I didnt see that you wrote 60psi at IDLE. Yep, thats rich, and I'm and idiot [img]smile.gif[/img]

[ October 12, 2003: Message edited by: Riles ]</p>

[jiacono]

Well I just got the car back, the Mechanic says I'm running rich because the plugs are all black.

But the Car is stalling out at idel and is revning from 1,000 RPMs to 3 RPM...I put the MAF screen back in and it;s still the same...

The mechanice said I need to but one of the min A/F tunners to tune it.

Is this guy on crack or what now?

[dashiftyfella]

maybe your plugs are too cold. alot of fi guys go with super cold plugs that never get warm enought to burn off all the carbons. did you dramatically lower your temperature when you boosted? most people recomend ony goin 2 ranges cooler and warming up as you get extensive build up a a rich running car. uhhhhh i think

[jiacono]

&lt;&lt;&lt;UPDATE&gt;&gt;&gt;

Well a litte more news, it seems when I disconnect the MAF sensor the car ran fine, replaced the plugs and everything was running ok, the car was running in "limp" mode.

SO I was told to get a new MAF sensor, well I just put a new one in the the car started acting wacky again.

HAS ANYONE HAVE THIS HAPPEN TO THEM?!?! It's triiving me nuts!!

[ssms5411]

I've never had my fuel pressure at 60 psi at idle before but I would check your Bov to make sure thats working the way it should be. Also check the Fmu and make sure the vac line off of it is hooked up correctly. The only other thing I can think of right now would be your fuel pressure regulator. What is your vaccum at idle?

[Turbo V6 Camaro]

<blockquote>quote:</font><hr>Originally posted by Tiago:
sounds like the FMU is installed backwards. the inlet-outlet are switched around on teh fuel line.<hr></blockquote>

^^^^^^^that is the frist thing i thought of^^^ sounds like the best thing to try

[Wicked 3800 V6]

What year is your car? Put that darn MAF screen back in!
-Rob

[Shirl]

Take the FMU off. Your not running that much boost to need it right now. If it runs fine without stalling (which it probably will) then you'll know that's the problem for sure.