> Hey all, i run my 4cyl honda vtec on premium fuel (as it
> should be). The premium here in australia is supposedly
> nothing compared to the overseas ones so i put some octane
> booster in my tank. It ran well the first tank yet i put a
> little bit more in the next time i filled up. After filling it
> the second time and adding the octane boost my car is running
> extremely rough. Conditions are
> - Idleing inconsistently and lots of engine movement - can
> feel it in the wheel!
> - Changed engine tempo, much deeper growl, sorta like a WRX
> with a 4 inch exhaust (and my car isnt a WRX)
> - Extremely slow in low revs and struggling to pull hard,
> same in higher revs
> - When the VTEC kicks in it sometimes clears up but other
> times its extremely laggy.
> - Sounds like the cars going to backfire...... well not really
> but it has that excess fuel build up sound in the exhaust like
> theres unburnt spits.
> Any ideas guys? i thought maybe the octane boost has clogged
> up my injectors yet im not too sure.
hey again guys, thanks for all your responses!! Turns out my head
gasket was leaking co-incidently at the same time id put the injector
cleaner in! Found water in where the sparkplugs were so only 3
cylinders were firing!
Its not bad downunder thanks jason! Pretty kewl place to live.
The reason i said the fuel was not all that great as ive been told the
octane content in the fuels here both premium and unleaded were lower
than places like japan. Seeing as i have an imported car i thought id
run it with a higher shot of octane, it did make a difference though!
Oh well, time for a new head gasket haha, thanks guys!