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Nitrous sputtering and not working correctly... PLZ HELP! (UPDATE PROBLEM FOUND!!!)

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Old May 28, 2012 | 01:21 AM
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Default Nitrous sputtering and not working correctly... PLZ HELP! (UPDATE PROBLEM FOUND!!!)

Alright so if you look in the srk section I went tonight to go race an 04 cobra that I previously raced. Anyways during the races my n20 will hit and I start to pull and than the damn car starts acting like it is missfiring. It feels kinda like the solenoid is opening and closing really quickly. Every race was the same it would hit and I would pull and than it would "sputter" like the nitrous was going off and on and he would pull.. Over and over like that. Everytime it hit and didn't sputter I would start to pull.

Things I thinkg could be wrong....

1. My window switch is f'ing up and making the solenoid open and close...
2. I have something clogging my line or solenoid not letting the n20 or fuel flow like it should.
3. The n20 is making my plugs misfire or not fire?
4. My fuel pump for some reason is not wanting to support the fuel to match the 100 hp anymore and is giving up on me.

I can't think of anything else. It never did this before the window switch so tonight i am going to check all my lines and solenoids to make sure nothing is in them and than I'm going to take the window switch out and do a couple pulls without it and see if it could be the problem...

Last edited by sweet99ss; Jun 3, 2012 at 10:55 PM.
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Old May 28, 2012 | 01:27 AM
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Bottle Pressure.
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Old May 28, 2012 | 02:50 AM
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Do you run a fuel pressure safety switch?
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Old May 28, 2012 | 03:46 AM
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I know it sounds stupid, but when's the last time you changed the fuel filter? I ran into the same issue before where a clogged filter made it fall on it's face at about 4500. Shut it down, checked everything and tried again, same result. After some time tracing it, I replaced the fuel filter and bam, no problem. Just a thought.
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Old May 28, 2012 | 03:56 AM
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What brand nitrous solenoids, and what window switch? Is it a drive by wire car? If not what are you using for a wide open throttle switch?
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Old May 28, 2012 | 04:40 AM
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Originally Posted by 402GOAT
What brand nitrous solenoids, and what window switch? Is it a drive by wire car? If not what are you using for a wide open throttle switch?
I experienced the same thing. checked things over, hunted and hunted. Turned out to be a loose ground. Something as simple as that and it plagued me for days!
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Old May 28, 2012 | 07:53 AM
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Originally Posted by Fbodyjunkie06
Bottle Pressure.
The bottle pressure was high if anything. I had just gotten it filled an hour before. Presure was at 1050-1100 psi.
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Old May 28, 2012 | 07:54 AM
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Originally Posted by jmill96Z
Do you run a fuel pressure safety switch?
No but probly would be a good ideA
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Old May 28, 2012 | 07:59 AM
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Originally Posted by RocitSS
I know it sounds stupid, but when's the last time you changed the fuel filter? I ran into the same issue before where a clogged filter made it fall on it's face at about 4500. Shut it down, checked everything and tried again, same result. After some time tracing it, I replaced the fuel filter and bam, no problem. Just a thought.
It runs strong off the bottle, but iguess you are saying maybe the filter clogged a little might not let it add quit enuf fuel for the n20? Ill check that out if its not something else
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Old May 28, 2012 | 08:03 AM
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Originally Posted by 402GOAT
What brand nitrous solenoids, and what window switch? Is it a drive by wire car? If not what are you using for a wide open throttle switch?
Nitrous outlet solenoids. Msd digital window switch, it's cable driven and it's the wot switch that came with the nitrous outlet kit. The more i think about it i think the window switch has to b messing up. It never did this before i installed it
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Old May 28, 2012 | 08:36 AM
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Originally Posted by sweet99ss
The bottle pressure was high if anything. I had just gotten it filled an hour before. Presure was at 1050-1100 psi.
The experts will chime in, but I believe your problem is pressure to high. One time I could not even get my solenoid to fire at all due to too much pressure.

N2
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Old May 28, 2012 | 09:37 AM
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High bottle pressure will make the solenoid not fire correctly.
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Old May 28, 2012 | 09:37 AM
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I'd check the plugs while you're looking. I ate a plug once and it acted like you're describing.
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Old May 28, 2012 | 09:46 AM
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Sounds like the window switch .if it ran fine before and you changed something and now it is messing up,well just take it of and see it the issues clears up.it my just be something with the install of the switch.
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Old May 28, 2012 | 12:29 PM
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Originally Posted by ScreaminRedZ
I'd check the plugs while you're looking. I ate a plug once and it acted like you're describing.
Yea, but the car runs fine off the spray.. So I don't see how it could be plugs unless the nitrous is giving them problems. They are br7efs
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Old May 28, 2012 | 03:06 PM
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Originally Posted by gnx
Sounds like the window switch .if it ran fine before and you changed something and now it is messing up,well just take it of and see it the issues clears up.it my just be something with the install of the switch.
x2. try it without the window switch and i bet you it will work.either you have an F'ed up switch or you didnt wire it properly.but please try it with out the window switch and please report back.i would like to know if it fixes it.im close to installing my setup which involves a MSD digital switch.
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Old May 28, 2012 | 03:16 PM
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Originally Posted by Leeroyws6
x2. try it without the window switch and i bet you it will work.either you have an F'ed up switch or you didnt wire it properly.but please try it with out the window switch and please report back.i would like to know if it fixes it.im close to installing my setup which involves a MSD digital switch.
I knoew i installed it right. Theres no reason it should work half the time and than not work half the time. The numbers have be going haywire and the decimal point moves on it. I have contacted msd for a refund. I am going to take it out and make sure it fixes the problem
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Old May 28, 2012 | 03:33 PM
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I could never get my ls to run right with the msd digital. Ran great with my old lt car. Sounds like its the culprit.

Reason I asked about the FPSS was that I've always had issues those when it comes to spray/no spray problems
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Old May 29, 2012 | 10:49 AM
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sounds like the msd is giving you some trouble. Try its with just the WOT switch on and see if you have the same problem. If you have the problem still let us know. We should be able to help you out.
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Old May 29, 2012 | 03:09 PM
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Bottle pressure is too high.
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