Misfiring while spraying
Thread Starter
On The Tree
Joined: Sep 2015
Posts: 159
Likes: 0
From: Cullman, Alabama
I have it jetted for a 150 but only wanted to spray a 100 shot for now so I had it turned down on the NOS mini to 65% with 0 ramp. I thought it might have been getting too much fuel or something off the hit so I then pulled it back to 25%-85% over a 3 second ramp. I haven't tried giving it the full 150 shot yet and I'm nervous to since it's not acting right on anything I've tried. I know its spraying because I tested it yesterday before I went out and tried these different methods. I unhooked the nozzle and the fuel and nitrous lines from the nozzle and they were both working perfect
Thread Starter
On The Tree
Joined: Sep 2015
Posts: 159
Likes: 0
From: Cullman, Alabama
Lane Culver. I had him turn the shift points up about 2 months ago. I went from a TR6 to a BR7 plug 3 weeks ago with no issues and then a couple days ago it started acting funny with the studderingat low RPM. My plug wires will be here tomorrow. They're due for a change but if that doesn't fix it then I'm going to swap plugs again I guess
Thread Starter
On The Tree
Joined: Sep 2015
Posts: 159
Likes: 0
From: Cullman, Alabama
are u sure the lnc is pulling timing?? try unhooking the nitrous relay and set the lnc to full timing. Make a hit as if u were spraying and see if u can feel the timing being pulled.
Has it ran great before with the same setup on nitrous? or is this a new setup?
Has it ran great before with the same setup on nitrous? or is this a new setup?
Thread Starter
On The Tree
Joined: Sep 2015
Posts: 159
Likes: 0
From: Cullman, Alabama
I'm not sure if that would work or not since everything is wired together. I'm about to post the wiring diagram I used minus the bottle heater and purge. Its definitely pulling timing. It flashes as it should when I arm it and I know for a fact its plugged into the coil packs correctly lol. This is my first time ever spraying. It ran great on motor, and still does. I've seen where lots of people have had problems with #7 fouling out so I'm about to check that. I've been letting my car cool down since getting off work. Lane tuned it with TR6's in it. I don't believe that should make a difference as far as tuning goes but I may take it back to him in the near future to have him tweak it for nitrous
Thread Starter
On The Tree
Joined: Sep 2015
Posts: 159
Likes: 0
From: Cullman, Alabama
This is the wiring diagram I used. Everything works as it should. I believe it is either a plug or a bad plug wire causing this issue. It may be misfiring under WOT on motor but just gets amplified when I spray it. It pulls hard on motor though
Thread Starter
On The Tree
Joined: Sep 2015
Posts: 159
Likes: 0
From: Cullman, Alabama
I started pulling the driver side plugs and the #4 plug was loose and the #7 plug wire wasn't all the way on so I fixed that issue. I went and tested the nitrous again and the car is still studdering like it used to. I hope new wires and/or plugs fixes it, but on the nitrous it pulls hard as hell. Didn't sputter or anything until the bottle got low. I actually claimed my first nitrous victory against a 6th gen auto SS on the highway. I was in 3rd gear and let it take the hit and then I went around it like it was a stock 4.0 V6 Mustang racing an LS1. I was amazed at how hard just a 100 shot hit. I'm hooked on spray hahaha
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
I started pulling the driver side plugs and the #4 plug was loose and the #7 plug wire wasn't all the way on so I fixed that issue. I went and tested the nitrous again and the car is still studdering like it used to. I hope new wires and/or plugs fixes it, but on the nitrous it pulls hard as hell. Didn't sputter or anything until the bottle got low. I actually claimed my first nitrous victory against a 6th gen auto SS on the highway. I was in 3rd gear and let it take the hit and then I went around it like it was a stock 4.0 V6 Mustang racing an LS1. I was amazed at how hard just a 100 shot hit. I'm hooked on spray hahaha
Buy a big box of BR7's (not just 8 of em, as you will inevitably drop one, don't use it). Gap to .032
Hopefully it is just plugs and wires.
Thread Starter
On The Tree
Joined: Sep 2015
Posts: 159
Likes: 0
From: Cullman, Alabama
I'm sure that Cylde would log a run for me. I gapped these to .036. Would gapping them to .032 even make a difference? I'm pretty sure it's either plugs or wires due to the fact that it only happens sometimes and not 100% of the time
I doubt it would make a difference or be the issue but, .032 is what most run (including myself, for years on a 150-175 shot).
Thread Starter
On The Tree
Joined: Sep 2015
Posts: 159
Likes: 0
From: Cullman, Alabama
Spark plug electrode gap plays an important role in how well the flame core (spark) ignites the air-fuel mixture. The correct amount of gap is needed in order to have a reliable and accurate flame core between the spark plugs center electrode and ground electrode, which ignites the surrounding air-fuel mixture.
Modified engines with higher cylinder pressures will typically require a smaller electrode gap to ensure ignitability, as the voltage requirement at the electrode gap is increased due to higher combustion pressures. The larger the gap is, the greater the demand will be from the coil and ignition system, eventually exceeding the ignition system’s ability. The ignition system and electrode gap are dependent on one another in order to maintain a strong flame core. If the electrode gap is too small, the electrodes will absorb the flame core’s heat, which will extinguish the flame core and prevent combustion.
Thread Starter
On The Tree
Joined: Sep 2015
Posts: 159
Likes: 0
From: Cullman, Alabama
Thread Starter
On The Tree
Joined: Sep 2015
Posts: 159
Likes: 0
From: Cullman, Alabama