Nismojunky Posted January 26, 2009 Share Posted January 26, 2009 my pathy is backfiring when im slowing down, what would cause this? new o2, cat and muffler Link to comment Share on other sites More sharing options...
94extreme Posted January 26, 2009 Share Posted January 26, 2009 out of time? Link to comment Share on other sites More sharing options...
adamzan Posted January 26, 2009 Share Posted January 26, 2009 Or you have a leak somewhere. Link to comment Share on other sites More sharing options...
94extreme Posted January 26, 2009 Share Posted January 26, 2009 yeah definitely. leaky vacuum will do that too. CEL on? Link to comment Share on other sites More sharing options...
BowTied Posted January 26, 2009 Share Posted January 26, 2009 Assuming you mean backfiring out the exhaust this can mean unburnt fuel is getting into the hot exhaust system where it then burns causing the back fire. Could be valves or just running too rich. Does it do it when cold and warm or? Link to comment Share on other sites More sharing options...
Precise1 Posted January 26, 2009 Share Posted January 26, 2009 Too rich, and or not enough back pressure? In addition to all the above, of course... B Link to comment Share on other sites More sharing options...
MY1PATH Posted January 26, 2009 Share Posted January 26, 2009 Too rich, and or not enough back pressure? In addition to all the above, of course... B reducing exhaust pipe diameter can reduce this condition, if its happening in the exhaust pipe. Link to comment Share on other sites More sharing options...
Indigent Posted January 26, 2009 Share Posted January 26, 2009 Is the information in your profile correct? If it is then you should really post this in the 86-89 Section of the board. The VG30I is very different from the VG30E. Most of the solutions people might give will not apply to your rig anyway. It is a bit frustrating constantly seeing that. Keep in mind I am only going by what your profile says. If you have a second rig that is 90-95, I apologize for the rant. indigent. Link to comment Share on other sites More sharing options...
Kingman Posted January 26, 2009 Share Posted January 26, 2009 Crack in a line to the AB valve? Link to comment Share on other sites More sharing options...
MY1PATH Posted January 27, 2009 Share Posted January 27, 2009 Is the information in your profile correct? If it is then you should really post this in the 86-89 Section of the board. The VG30I ... for the vg30i I reccomend keeping pipe diameters down to 2.25 max with 2.0 as being optimal for non-poping exhaust and low end torque. If your running stock 1.875" pipe then I guess something else is the cause. Link to comment Share on other sites More sharing options...
Nismojunky Posted January 27, 2009 Author Share Posted January 27, 2009 no its not correct, i did find a vacuum leak and that seemed to have fixed the problem the hose came off my erg valve Link to comment Share on other sites More sharing options...
adamzan Posted January 27, 2009 Share Posted January 27, 2009 Was it this hose? Link to comment Share on other sites More sharing options...
Nismojunky Posted January 28, 2009 Author Share Posted January 28, 2009 the one that connects to the egr valve regulater Link to comment Share on other sites More sharing options...
edicer2 Posted January 28, 2009 Share Posted January 28, 2009 mine used to backfire whe i let off the gas and downshift. i had it straight piped though. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now