missfiring on 3rd gear

sr20det bb · 11-04-2004, 02:15 AM

hey guys
i have a quick question, i was racing last night and after few runs car start like missfiring on 2nd gear at about 5000rpm and above.
in 10 min it was all good on 2nd gear but on 3rd at about 6000rpm it still missfiring. (like there are no fuel)
what could it be?
tomorow i will check spark, and fuel presure.
but any other ideas will help too

ny set up is sr20det u13.370cc, 255lb walbro fuel pump, u13 ecu and maf.
12psi.

ser_lover · 11-14-2004, 12:45 AM

Run A Timing Check Man Remember That Advancing It May Give More Rev But It Takes Away Fuel So Retatrd It A Lil That Will Throw More Fuel In The Cylinder

3BiP · 11-14-2004, 01:29 AM

could be fuel pump fu*king with you
maybe dirty fuel filter? get a z32 fuel filter as well

sr20det bb · 11-15-2004, 01:53 PM

i have replace with z32 filter and i switch from 17" timing to 15'' and seems like problem got corrected.
thanks guys

ser_lover · 11-16-2004, 01:36 AM

yea man no problem

t bags · 11-22-2004, 12:21 AM

how do u test ur fuel pump voltage