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Old 05-01-2002, 12:42 AM   #1
Scooby Specialist
Member#: 4579
Join Date: Mar 2001
Location: XxNiKi
MY01 XxNiKi

Default car backfiring when in first?

my car backfires now soemtimes when i put it into first gear and give it some gas? why? its sooo scary...sounds liek i am doign soemthign wrong.. and do you all get alot of water comign out of your exhausts? especially in teh mourning.... i let my car warm up all teh time.....what is it?
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Old 05-01-2002, 12:51 AM   #2
Scooby Specialist
Member#: 13282
Join Date: Dec 2001
Chapter/Region: MAIC
Location: Richmond, VA
2007 FXT
WRB SPB Edition


Stock exhaust?

Mine(non stock) does this when I had floored it then back off the gas rather quick. From what I understand it is unused gas hitting the Cat. The water coming out of the exhaust is from some kind of condensation I believe, a friend explained it before don't remember all of it though. Personally I don't worry about it to much.

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Old 05-01-2002, 11:39 AM   #3
Scooby Specialist
Member#: 9213
Join Date: Aug 2001
Location: My grandma was 6' 6"
2000 RS


In a sense, the water is condensation. Remember, all combustion reactions produce at least two things...Carbon Dioxide, and water. Water is normal.
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Old 05-01-2002, 04:50 PM   #4
Scooby Specialist
Member#: 13823
Join Date: Jan 2002
Chapter/Region: MAIC
Location: Hanover, MD


I was told that the cat changes the unfriendly carbon monoxide to a more friendly water vapor(condensation). Or something like that. It is normal.
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Old 05-02-2002, 12:22 AM   #5
Scooby Newbie
Member#: 6031
Join Date: Apr 2001
Location: Milton, WA
2001 Impreza RS 2.5


When the pipes heat up they cause condensation. This is then pushed out of the back of the car by the presser of the exhaust.
Its normal and will happen with all cars.
The Cat only takes unused gass and burns it so that your exhaust is cleaner. No magic water tricks
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Old 05-02-2002, 12:00 PM   #6
Scooby Specialist
Member#: 6570
Join Date: May 2001
Chapter/Region: South East
Location: Dunedin, FL
9.3 TRB0 CNV


Ahh yes the mystery of Subaru!!

Mine backfires in 1st 2nd 3rd, and sometimes forth, and I like it. You're right from what I've heard... Raw fuel through the system hitting the hot exhaust results in a pop. Due to the system running rich.

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Old 05-02-2002, 12:24 PM   #7
Scooby Specialist
Member#: 4103
Join Date: Feb 2001
Chapter/Region: MWSOC
Location: Brookfield
2016 Mazda6


Or it will backfire real good if you have an exhaust leak like me.
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Old 05-02-2002, 02:11 PM   #8
Scooby Newbie
Member#: 4973
Join Date: Mar 2001
Location: Newark,NJ,USA
2000 2.5 RS


i get the same thing, i was somewhat worried about it but my mechanic told me its normal for scoobies.
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