« previous next »
Pages: [1]

Author Topic: sometimes a small backfire  (Read 1151 times)

jamie16v

  • Guest
sometimes a small backfire
« on: 05 June 2010, 20:31 »
sometimes when i decelerate at low speed i get a quick backfire. could this be down to a leaking pcv system, ie letting unmetered air into the TIP?
also what else could be causing it? havent scanned for fault codes and the car seems to run fine apart from only boosting to 17psi peak before dropping.
this only seemed to happen after i fitted the fmic but there are no leaks.
Logged

Offline G60GTI16V

  • I live here
  • *****
  • Posts: 934
  • GTI Mk1, 2, 3, 4 now VRS Hell Yea!
Re: sometimes a small backfire
« Reply #1 on: 05 June 2010, 22:05 »
sounds like not all fuel is getting burt possibley, and lack of psi could be down to the fmic pipework/setup  :undecided:
Logged

Offline james2

  • I live here
  • *****
  • Posts: 1,878
  • No scammers please.
Re: sometimes a small backfire
« Reply #2 on: 05 June 2010, 23:37 »
have you got a performance exhaust iv heard a golf gti do it with a big after market exhaust :undecided:
Logged
AGU 1.8T. Mods done: R32 front bumper, turborev smic, ngk platinum spark plugs, uprated pancake pipe, demon motorsport boost hoses, forge 007 dv, forge engine cover, r-tec stage 1 map ,home made cold airfilter ,run on 98 ron fuel and castrol edge 0w 40 oil. Advanti racing alloys.

jamie16v

  • Guest
Re: sometimes a small backfire
« Reply #3 on: 06 June 2010, 11:45 »
gawd knows... :tongue:
Logged

Offline linz

  • I live here
  • *****
  • Posts: 2,412
  • vee-dub
Re: sometimes a small backfire
« Reply #4 on: 06 June 2010, 12:10 »
my car will pop now that she has a decat an more power .....
Logged

Offline richw911

  • 10k hero
  • *
  • Posts: 18,673
  • The Linkmeister and an OEM Freak.
Re: sometimes a small backfire
« Reply #5 on: 06 June 2010, 12:11 »
Decat or sports cat fitted?
Logged

MKIV Mod Squad™ a part of the headlight police.

jamie16v

  • Guest
Re: sometimes a small backfire
« Reply #6 on: 06 June 2010, 12:39 »
nope, standard exhaust right through atm, standard airbox with panel filter too..
what i have noticed though is a much better mpg since i covered the holes i drilled in the airbox and put the cold air feed back on..
Logged
Pages: [1]
« previous next »