Car stalls when I spray?????

qwkvert · May 6th, 2008, 07:04 PM

So I got the 383 in it now, 30lb injectors, and a 255lph pump in the tank. Stock lines from the tank to the fpr, but have larger ones from fpr to the fuel rail. Fuel pressure is set at 42ish, timing at 8*, and I tried to spray it today for the first time with the new combo and it stalled(just shut off). I let it coast in gear for a minute, pushed the clutch in, cycled the key and let back out of the clutch and it fired back up. No back fires, no sudden hit of nitrous before it stalled, just shut down on me. Yes, it is hooked up correctly, was on my previous 302 combo and worked great, and it purges fine, and with the key on engine off it will spray when I mat it. Any suggestions are much appreciated, the only thing I can think of is it runs out of fuel, but it seems to me like there would be some more symptoms of that other than just shutting down.

Goblin · May 6th, 2008, 10:07 PM

Sounds like your leaning waaaay out. Are you running a wet system? If you are, check to make sure you've got fuel delivery. Just because your Nitrous will flow, doesnt mean fuel is flowing too.

qwkvert · May 6th, 2008, 10:18 PM

I will re-check the fuel flow, but if it was leaning out wouldn't it pop or something? I have had a nitrous back fire before from too lean and it poped on me(got lucky too).

Goblin · May 7th, 2008, 12:43 AM

It depends really. If your not getting any fuel flow what so ever, the engine will choke immediately once the Nitrous is injected. If you back fire, your getting some fuel, but not enough. I'd make sure the solenoid is actuating and your getting flow. Then we can trouble shoot from there.

TurboLX · May 7th, 2008, 08:28 AM

Its not getting fuel like Goblin said, you running a stock fuel pump or injectors?

qwkvert · May 7th, 2008, 10:30 PM

Originally Posted by TurboLX

Its not getting fuel like Goblin said, you running a stock fuel pump or injectors?

uhm, no on the injector /pump question...
The fuel needed to supply my engine and nitrous kit was too much for the 255lph to keep up with, I am getting a fuel cell now for the nitrous with a seperate pump.

TurboLX · May 8th, 2008, 09:09 AM

get an inline pump

qwkvert · May 8th, 2008, 10:40 AM

why?

fogged306 · May 13th, 2008, 12:00 AM

What is your plug gap at? Maybe its too wide and you're blowing out the spark.

TurboLX · May 13th, 2008, 08:00 AM

Originally Posted by qwkvert

why?

because i dont think they make a pump any bigger then 255lph for an intank pump

May 6th, 2008, 07:04 PM	#1
qwkvert Newbie 1989 lx convertible 10.87 @ 128 ( old 302 combo) Join Date: Jan 2008 Location: Mt Juliet,TN Posts: 45	Car stalls when I spray????? So I got the 383 in it now, 30lb injectors, and a 255lph pump in the tank. Stock lines from the tank to the fpr, but have larger ones from fpr to the fuel rail. Fuel pressure is set at 42ish, timing at 8*, and I tried to spray it today for the first time with the new combo and it stalled(just shut off). I let it coast in gear for a minute, pushed the clutch in, cycled the key and let back out of the clutch and it fired back up. No back fires, no sudden hit of nitrous before it stalled, just shut down on me. Yes, it is hooked up correctly, was on my previous 302 combo and worked great, and it purges fine, and with the key on engine off it will spray when I mat it. Any suggestions are much appreciated, the only thing I can think of is it runs out of fuel, but it seems to me like there would be some more symptoms of that other than just shutting down. __________________ 383w in the vert now baby!!!!

May 6th, 2008, 10:07 PM	#2
Goblin Editor Secret In The Works Join Date: Apr 2007 Location: Relocated Back To Tucson, Arizona Posts: 1,832	Sounds like your leaning waaaay out. Are you running a wet system? If you are, check to make sure you've got fuel delivery. Just because your Nitrous will flow, doesnt mean fuel is flowing too. __________________ Definition of Fast? I'd say thats good enough. NMRA Outlaw 10.5 Season Opener 2008 Photo courtesy of - Yours Truly

May 6th, 2008, 10:18 PM	#3
qwkvert Newbie 1989 lx convertible 10.87 @ 128 ( old 302 combo) Join Date: Jan 2008 Location: Mt Juliet,TN Posts: 45	I will re-check the fuel flow, but if it was leaning out wouldn't it pop or something? I have had a nitrous back fire before from too lean and it poped on me(got lucky too). __________________ 383w in the vert now baby!!!!

May 7th, 2008, 12:43 AM	#4
Goblin Editor Secret In The Works Join Date: Apr 2007 Location: Relocated Back To Tucson, Arizona Posts: 1,832	It depends really. If your not getting any fuel flow what so ever, the engine will choke immediately once the Nitrous is injected. If you back fire, your getting some fuel, but not enough. I'd make sure the solenoid is actuating and your getting flow. Then we can trouble shoot from there. __________________ Definition of Fast? I'd say thats good enough. NMRA Outlaw 10.5 Season Opener 2008 Photo courtesy of - Yours Truly

May 7th, 2008, 08:28 AM	#5
TurboLX Site Moderator 1990 Mustang LX Turbo 8.67@165.91 mph Join Date: Oct 2006 Location: New York Posts: 8,229	Its not getting fuel like Goblin said, you running a stock fuel pump or injectors? __________________ Wiring Diagrams, TSB's, OBD Service Codes and Engine Diagrams Available. PM For Info Myspace

May 8th, 2008, 09:09 AM	#7
TurboLX Site Moderator 1990 Mustang LX Turbo 8.67@165.91 mph Join Date: Oct 2006 Location: New York Posts: 8,229	get an inline pump __________________ Wiring Diagrams, TSB's, OBD Service Codes and Engine Diagrams Available. PM For Info Myspace

May 8th, 2008, 10:40 AM	#8
qwkvert Newbie 1989 lx convertible 10.87 @ 128 ( old 302 combo) Join Date: Jan 2008 Location: Mt Juliet,TN Posts: 45	why? __________________ 383w in the vert now baby!!!!

May 13th, 2008, 12:00 AM	#9
fogged306 Enthusiast 89 GT Join Date: Apr 2007 Location: Did you get that thing I sent you? Posts: 916	What is your plug gap at? Maybe its too wide and you're blowing out the spark. __________________ Parts needed: TwEECer, if anyone has one for cheap. 70mm TB Full length headers and matching h-pipe For sale: Ford Racing E-303 cam brand new BBK 65mm TB, brand new BBK equal length shortys brand new BBK off road x-pipe for shortys used

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