i have an s13 with sr20det with a t28 turbo...

my first problem is it is breaken up on high boost ...7-10lbs is fine but 11-13lbs.. it breaks up...like it is not getting enough fuel at high boost...

my main concern is after driving for 15 minutes or more.. then sitting at an idle it starts to blow white smoke and when i rev it really blows out... it only smokes for about 2 minutes and stops..the car runs perfect though ... never overheats or anything..

please i need help before i fuck something up... thanks bobby

 

check your oil dipstick and make sure the oil does not look milky(coolant in oil). usually white smoke is coolant getting into the combustion chamber.

 

what fuel pump you running?
ive seen everything from kinked fuel lines to just worn out pumps cause misfires at higher boost levels.

fuel cut?


thats werid that it only smokes for 2 mins after a 15min drive.
was gonna say valve seals but thats not what it sounds like at all.

 

na dipstick is straight just oil, and its running a walbro 255, i just replaced the sock filter on it, i put fuel injection cleaner in it, and replaced the fuel filter.. i just took it for a drive again and at 11-13 lbs. it is popping and sputtering and blowing black smoke out the exhaust.. its still hauls ass on 13lbs.. but is running like shit...

 

i was thinking valve seals too, but that would be blue smoke while the description of the problem stated white smoke.

 

only thing i can think of is upgrade the injectors from 330cc to 550cc or go and get it tuned... what do ya'll think..??

 

if it isnt tuned, tune it. also check for vacuum leaks, that could be causing the break up in boost.

 

Check your fuel pressure regulator.

 

and if you go that far, might as well double check the injectors.

if one of the nissan gods could chime in what the smoke colors mean.
i cant remember what burns what color.

 

does it over heat at all, do you have to add coolant at all, and cant find a leak. even thou the oil is not white you may still have a blown headgasket.