More and more backfiring? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

linkwpc · 06-15-2005, 08:38 AM

I have SR20 S15 for a while now and when I first got the car with the SR it never backfire or very very little. Now 7 months later it’s backfiring all the time. Manly between all shift points it will do a light backfire when it warms up. Is there a way to fix it to do less backfiring or is there something wrong with my SR?

uno · 06-15-2005, 09:00 AM

Quote:

Originally Posted by linkwpc

I have SR20 S15 for a while now and when I first got the car with the SR it never backfire or very very little. Now 7 months later it’s backfiring all the time. Manly between all shift points it will do a light backfire when it warms up. Is there a way to fix it to do less backfiring or is there something wrong with my SR?

probably timing or incomplete fuel burn

the head · 06-15-2005, 09:30 AM

if you run an atmo BOV recircing it will help some

possibly new plugs? Car may be running rich and therefore fouling plugs

g2ic02 · 06-15-2005, 09:46 AM

yeah just recirculate your blow off valve and it should stop most of the backfiring. It is a common thing for turbo charged vehicles to back fire a bit.

linkwpc · 06-15-2005, 10:22 AM

hhhmm I do have my BOV recirculating right now.....

uno · 06-15-2005, 11:04 AM

Quote:

Originally Posted by linkwpc

hhhmm I do have my BOV recirculating right now.....

check plugs, plug gap and timing

bdeisle · 06-15-2005, 11:58 AM

i just had the same problem, and i had to replace my fpr, just gave up on me and was sticking.

SDS14Driver · 06-15-2005, 01:44 PM

i agree with the timing or possible unburned fuel bein blown up cause of your EGT. If you really wanna get to the root of your problem, find out why back firing occurs in the first place.

Taking it a step further, why back firing occurs in turbo charged vehicles and try to apply what you learned to your situation.

good luck.

linkwpc · 06-16-2005, 06:56 AM

So should I change all my plugs? If so what kind of plugs should I get? Well I have thinking that I'm running too rich. I go about 18 miles to the gallon. So thats no good. So should I go get my ECU tuned to fix the going too rich problem? By the way bdeisle, what fpr mean?

g2ic02 · 06-16-2005, 09:55 AM

fuel pressure regulator=fpr

bdeisle · 06-16-2005, 10:55 AM

depending on how bad the backfire.. i wouldnt drive or hit boost at all without knowing the issue, its not workth det. and blowing up your motor.. and in sr check coil packs and the ignitor

06-15-2005, 08:38 AM	#1
linkwpc Zilvia Member Join Date: Jul 2004 Location: Torrance, CA Age: 44 Posts: 228 Trader Rating: (1) Feedback Score: 1 reviews	More and more backfiring? I have SR20 S15 for a while now and when I first got the car with the SR it never backfire or very very little. Now 7 months later it’s backfiring all the time. Manly between all shift points it will do a light backfire when it warms up. Is there a way to fix it to do less backfiring or is there something wrong with my SR? __________________ 97 240SX! 10 Camaro SS (SOLD - 95 W/S15 SR20 6M tran)

06-15-2005, 09:30 AM	#3
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	if you run an atmo BOV recircing it will help some possibly new plugs? Car may be running rich and therefore fouling plugs __________________ I never knew you could do that with an eggplant

06-15-2005, 10:22 AM	#5
linkwpc Zilvia Member Join Date: Jul 2004 Location: Torrance, CA Age: 44 Posts: 228 Trader Rating: (1) Feedback Score: 1 reviews	hhhmm I do have my BOV recirculating right now..... __________________ 97 240SX! 10 Camaro SS (SOLD - 95 W/S15 SR20 6M tran)

06-15-2005, 11:58 AM	#7
bdeisle Leaky Injector Join Date: Feb 2004 Location: balti md Posts: 108 Trader Rating: (0) Feedback Score: 0 reviews	i just had the same problem, and i had to replace my fpr, just gave up on me and was sticking. __________________ 93 h/b. ka24de-t3(14), enthapy controlled .20bore, weistco 8.5.1cr, gReddy FMIC, E/L mani,t3 turbo to a 3in D/P to a HKS(88mm)HiPower and for cool sound effects the oldskool HKS Superblow, and you ask what about fuel? let me tell you 580cc, yes i said 580cc's, act clutch/flywheel. Buy my Coolio trading cardz!

06-16-2005, 06:56 AM	#9
linkwpc Zilvia Member Join Date: Jul 2004 Location: Torrance, CA Age: 44 Posts: 228 Trader Rating: (1) Feedback Score: 1 reviews	So should I change all my plugs? If so what kind of plugs should I get? Well I have thinking that I'm running too rich. I go about 18 miles to the gallon. So thats no good. So should I go get my ECU tuned to fix the going too rich problem? By the way bdeisle, what fpr mean? __________________ 97 240SX! 10 Camaro SS (SOLD - 95 W/S15 SR20 6M tran)

06-15-2005, 09:46 AM	#4
g2ic02 Zilvia Junkie Join Date: Jul 2003 Location: minnesota Posts: 480 Trader Rating: (3) Feedback Score: 3 reviews	yeah just recirculate your blow off valve and it should stop most of the backfiring. It is a common thing for turbo charged vehicles to back fire a bit.

06-15-2005, 01:44 PM	#8
SDS14Driver Leaky Injector Join Date: May 2005 Location: Southern California Age: 55 Posts: 103 Trader Rating: (0) Feedback Score: 0 reviews	i agree with the timing or possible unburned fuel bein blown up cause of your EGT. If you really wanna get to the root of your problem, find out why back firing occurs in the first place. Taking it a step further, why back firing occurs in turbo charged vehicles and try to apply what you learned to your situation. good luck.

06-16-2005, 09:55 AM	#10
g2ic02 Zilvia Junkie Join Date: Jul 2003 Location: minnesota Posts: 480 Trader Rating: (3) Feedback Score: 3 reviews	fuel pressure regulator=fpr

06-16-2005, 10:55 AM	#11
bdeisle Leaky Injector Join Date: Feb 2004 Location: balti md Posts: 108 Trader Rating: (0) Feedback Score: 0 reviews	depending on how bad the backfire.. i wouldnt drive or hit boost at all without knowing the issue, its not workth det. and blowing up your motor.. and in sr check coil packs and the ignitor __________________ 93 h/b. ka24de-t3(14), enthapy controlled .20bore, weistco 8.5.1cr, gReddy FMIC, E/L mani,t3 turbo to a 3in D/P to a HKS(88mm)HiPower and for cool sound effects the oldskool HKS Superblow, and you ask what about fuel? let me tell you 580cc, yes i said 580cc's, act clutch/flywheel. Buy my Coolio trading cardz!