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Causes of backfireing??

  • Thread starter Thread starter DemonGT
  • Start date Start date Jun 20, 2005

DemonGT

Founding Member
May 24, 2002
871
51
49
Sparta,WI
Jun 20, 2005
#1
  • Jun 20, 2005
  • #1
i just replaced my water pump and started my car and it idled normal but every few seconds has a slight back fire..its not real loud like a gun or anything....it didnt do this when i pulled it into the garage?

odd thing is about two weeks ago it did the same thing..i started it and it did the slight poping/backfireing, then it sat for a few days and i completely forgot about it and when i started it up the next time it didnt do it at all...now i parked it and replace the WP and now its doing it again?

backfiring out the exhaust is to much fuel or its real rich right??
 

MagnaflowGT

New Member
Oct 3, 2004
73
0
0
Jun 20, 2005
#2
  • Jun 20, 2005
  • #2
it could really be a number of things. Plugs, wires, TPS is bad or needs cleaning, timing, etc...

when it was happening to me, it was my plug wires.
 

srothfuss

Last night I stabbed the same guy 7 times in a row
Oct 17, 2004
1,796
3
0
Woodward Ave.
Jun 20, 2005
#3
  • Jun 20, 2005
  • #3
My car pops when it's cold... I just let it warm up and then it's fine...

You can pull your codes and do a cylinder balance test to see if everything checks out OK. If you pass that, then take the noises as a sign that the car just wants you do drive it..
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
33
129
Jun 20, 2005
#4
  • Jun 20, 2005
  • #4
If it has sat a lot lately, driving it some is not a bad idea. the fuel will help clean varnish out of injectors (if not bad) simply from the flow and actuation, etc.

Good luck.
 

DemonGT

Founding Member
May 24, 2002
871
51
49
Sparta,WI
Jun 21, 2005
#5
  • Jun 21, 2005
  • #5
it sounds like firecrackers in the mufflers...plug wires are brand new...every thing else is just about new...dont have meny miles on anything as the car wont stop having problums
 
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