sr20 backfire

Post by **cys19** » Sun Mar 28, 2004 5:58 pm

does backfire only happen when the sr20 isnt properly tuned?

Website · Post by **quiksilvia** » Sun Mar 28, 2004 5:58 pm

Post by **dj_lennon_franz** » Sun Mar 28, 2004 5:58 pm

it can be a few things...yer BOV is mainly the cause of this problem..if your motor is not getting proper air to fuel mixture becasue of either venting or poor air circulation caused by yer BOV then you will get back fires all the time...if you straight piped yer cat then this will also add to the problem

Post by **zion** » Sun Mar 28, 2004 5:58 pm

Mine backfires all the time due to the atmospheric bov. What happens to my understanding (correct me if i am wrong) is that when the air inters the maf the ecu reads that number and there fore sends that much fuel to the injectors and when the bov acts is releases that air that was already read through the maf and there fore again there is too much fuel for the system and loads the system up. Hince the backfiring. It will also stall if you blow at low speeds and then disingage the clutch. Mine does anyways. lol. Hope that helps

Post by **dj_lennon_franz** » Sun Mar 28, 2004 5:58 pm

venting on a stock BOV is not recommended as you will get the whole back firing issue...there was a topic somewhere on this board that talked about which aftermarket to use that will cause the LEAST amount of problems

Website · Post by **quiksilvia** » Sun Mar 28, 2004 5:58 pm

i only back fire once in a whilenevr stalled cuz of bov

Post by **240dreams** » Sun Mar 28, 2004 5:58 pm

i get a small pop once in a while on my blitz ss bov. the stalling thing sucks.

Post by **MojoMan** » Sun Mar 28, 2004 5:58 pm

If you put an AFC on there or any fuel management you can fix this. I had the HKS ssqv on mine and it never stalled.

Post by **nismostate** » Sun Mar 28, 2004 5:58 pm

dj_lennon_franz wrote:venting on a stock BOV is not recommended as you will get the whole back firing issue...there was a topic somewhere on this board that talked about which aftermarket to use that will cause the LEAST amount of problems

Do you know which one it is??? I am getting the greddy type s because I can revent it but I rather have one that causes the least amount of problems.

Post by **Cyberkreig** » Sun Mar 28, 2004 5:58 pm

my car has never stalled. I get pops all the time.. I occasionaly get a fireball. It rocks.

Post by **Zadok** » Sun Mar 28, 2004 5:58 pm

I have a turbonectic dump valve that recirculates back into the intake, and mine pops 1 or 2 times between each shift.The guy who I recently bought the car from from used a 1990 sohc maf sensor with the red ecu.Could that be causing the car to run to rich?I'm still getting around 18-20 mpg.

Post by **Dori Dori** » Sun Mar 28, 2004 5:58 pm

A perfectly stock sr w/ an exhaust would backfire. Sure, a BOV or anything else that causes the computer to dump extra fuel into the motor will increase it, but not cause all of it. The motor runs richer than it needs to from the factory...it's a safety precaution.

Post by **Cyberkreig** » Sun Mar 28, 2004 5:58 pm

Hey Zadok, Hanover pa! I try to make it out to Eisenhour at least 2x a month. Maybe you and I can meetup? I might be able to help you with your car?

I was looking to buy that sweet turbo KA of yours a while back, but it was out of my pricerange.

Post by **Zadok** » Sun Mar 28, 2004 5:58 pm

Cool!Just give me a call sometime!My number is 451-7469

Post by **Hijacker** » Sun Mar 28, 2004 5:58 pm

Zadok wrote:I have a turbonectic dump valve that recirculates back into the intake, and mine pops 1 or 2 times between each shift.The guy who I recently bought the car from from used a 1990 sohc maf sensor with the red ecu.Could that be causing the car to run to rich?I'm still getting around 18-20 mpg.

my car backfires occasionally, but that's due to some spark plugs that need to be changed out. The MAF isn't the issue on that problem I believe.

Did you buy that vert from a nissan mechanic in Roanoke, VA?

Post by **Zadok** » Sun Mar 28, 2004 5:58 pm

yep!Please don't give me any bad news!The car has a couple of problems, like the waterpump pulley is bent and chewing up the belt, the car needs a new 02 sensor which is why i think it runs rich, and most of all the entire interior being total spent, due to a stupid dog running around in my car!Damn, I hate dogs!I totally love it though!Oh yeah!The stereo sucks too!Even with my $550 Pioneer headunit and all new speakers!

Post by **Cyberkreig** » Sun Mar 28, 2004 5:58 pm

Hah, i think we will get alongi have a pioneer Premeir DEH-P900R. First organic el display, retailed for $900. In a car with 3 speakers. :ylsuper

Post by **Hijacker** » Sun Mar 28, 2004 5:58 pm

nah. he's a good mechanic. the only issues i've had are from the owners previous to him. one spilled tobacco juice all over the rear floor pan, and I can't get it out for the life of me.

The engine is in great condition, except for this small front main seal leak i need to fix.

Post by **240SXer** » Sun Mar 28, 2004 5:58 pm

I'd look around and read up before you buy the Greddy Type S. I have one and it leaks like mad, I have it tightened almost all the way down and it still does. I lost to a Supercharged mustang last night becuse I turned it up to 14psi and the bov started leaking, I had to run 10psi which wasnt enough. Don't let it happen to you

Mine backfires a little bit, but no stalling or idle problems.

Post by **nismostate** » Sun Mar 28, 2004 5:58 pm

Sucks that your type S leaks. I just bought one but haven't installed it yet. I hope this doesn't happen to me....

Post by **240SXer** » Sun Mar 28, 2004 5:58 pm

I might have just gotten bad luck. But it sure does leak

Post by **Zadok** » Sun Mar 28, 2004 5:58 pm

My HKS SQV doesn't have any problems at all!And It's a unique sound compared to the SSQV and the Type-S!It's more of a large rushing air sound with a flutter!

sr20 backfire

sr20 backfire

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