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lean or mean
Posted: Tue Jul 24, 2007 11:00 pm
by Crazyhorse
G'day im new to subi's just wondering if its normal for them to pop n fart through the pipes on the overun eg when changing gear a friend tells me its normal i would've thought its running lean ?
:)
Posted: Tue Jul 24, 2007 11:03 pm
by Matatak
wt ride u got and engine?
mine doesnt do nething liek that only when engine breaking pretty hard on it lol
i def wuldnt think its normal to do it on gear changes but
as for wts cuasing it im unsure
Posted: Wed Jul 25, 2007 2:00 pm
by El_Freddo
You've got an exhaust leak somewhere... the popping your hearing is un-burnt fuel in the exhaust on engine braking, this sucks air into the exhaust from the outside atmosphere allowing more oxygen to mix and create an explosion in the exhaust pipe. Find the leak and fix it, problem solved. Easier said than done sometimes though.
It only has to be a small hole...
Cheers
Posted: Wed Jul 25, 2007 2:34 pm
by BrennyV
Don’t think i agree with you on that one mate, think we really need to know what engine/setup he is running before we can draw any conclusions.
My sti pops and claps trying to tell me that i have a leak? :P
Posted: Wed Jul 25, 2007 4:37 pm
by Phizinza
My EA81dc done it under heavy engine braking, and so does my EJ22 (on same exhaust, only the 22 has a Cat.)
I kinda like it, eheh.
Posted: Wed Jul 25, 2007 8:43 pm
by Crazyhorse
91 brumby 108k stock carb zorst etc thanks guys
Posted: Wed Jul 25, 2007 9:38 pm
by Suby Wan Kenobi
Through the pipe rich through the carb lean. You could also have an issue with your anit back fire valve. Its the thing on the LH side of the engine bay that looks like a small dumbell standing up. It could be black plastic or made of alloy
Posted: Wed Jul 25, 2007 10:08 pm
by Matatak
anti backfire valve
never noticed one on my car
might have to take another look to see if i can find one
