Popping after a Nitrous run??
01-17-2005, 10:08 AM
#21
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The car died becuase there was no jet all your fuel when though the nozzle, and you lost pressure on the injectors. Popping in the exhaust is ussaully casue by unburned fuel in the pipe igniting. When you left off the throttle never just "dump it" roll off the throttle. The slamming off the throttle can cause a stumble in the fuel delivery to the injectors. Just like a lean spike when the noid opens, the revuerse happens when you close it. The fuel pressure can spike for a moment and then the injector have a ton a fuel. Just my thouhgts.
Ricky
Ricky
Originally Posted by Tiger2o69
I checked the fuel noid and fuel cam out ( a lot) but my car acted funny....So I held my finger on the switch for a second and the car died....I started it up again and it did the same....I recorded it on hptuners but havent looked yet because i was going to the track...Didnt run n2o but did run a best ever n/a run....
Since there was no jets in the gas line it was probably flowing out much much more like a 200 shot so is this normal. Im guessing it took all the fuel away from the injectors.
Since there was no jets in the gas line it was probably flowing out much much more like a 200 shot so is this normal. Im guessing it took all the fuel away from the injectors.
01-17-2005, 04:51 PM
#22
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So what do you guys think about the lean spike i had? is it too long???
The unused fuel may be what the popping is because when I unhooked the fuel lines from the nozzle fuel was left in them..
The unused fuel may be what the popping is because when I unhooked the fuel lines from the nozzle fuel was left in them..
01-18-2005, 04:50 PM
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Originally Posted by SDB
Try this first....when using the nitrous, go WOT, then activate the nitrous system, then BEFORE letting off the gas, disarm the nitrous system and THEN left your foot from the go-fast pedal. This solved my popping problem.. Essentially too much unused fuel in line getting flooded as nitrous is used up at the end of a WOT run. Try this first to see if it doesn't solve the popping after running.
01-18-2005, 06:56 PM
#26
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I have seen this before, after you let off you get a little pop..pop...pop
Typically its a bit of raw gas in the exhaust that ignites after the throttle is closed. Probably just a tad rich..... The 100 shot still pulls hard right?
Dan
Typically its a bit of raw gas in the exhaust that ignites after the throttle is closed. Probably just a tad rich..... The 100 shot still pulls hard right?
Dan
01-28-2005, 01:46 PM
#29
Mine pops on the decel...I just do what everyone else does and stay in it for a second after the nitrous comes off....Altho, to be honest, I kinda like the popping noise!
01-28-2005, 02:08 PM
#30
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chances are it's fuel puddling on the plenum floor.
wet systems are great for this.
Log with an LM1 on the bottle. If you are going lean then I'd suspect the fuel pump getting tired.
wet systems are great for this.
Log with an LM1 on the bottle. If you are going lean then I'd suspect the fuel pump getting tired.
01-29-2005, 02:05 AM
#31
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Mine has also popped, I just figured unburnt fuel, I usually do just snap off the throttle though, I'm gonna have to try the roll method like ricky said to see if that makes a difference.
