kev93z

my misfire started a couple months ago the evening i swapped to my march pulley, actually on the very first test drive. it only happens when im going all out and slamming gears, usually happens in 2nd but has happened when i shifted to 3rd. as soon as i release the clutch it starts, lasts about a second, then goes away and it accelerates hard again. clutch is textralia with 3k miles.

ive made these changes with no luck
new ultra 90 wires
new autolite plugs
swapped coil packs from other car
swapped cyl#4 and cyl#5 injectors from other car
swapped MAF from other car

using hptuner i saw about 170 misfires on cyl 4, and almost as many on cyl #5. i get the flashing SES but not everytime.
i searched and it doesnt seem like it would be a valvespring from what ive read.
car has 82k miles, maybe a lifter or a pushrod? these will be the next things to check im assuming. kev

ninobrn99

iTrader: (8)

is it flashing when you drive? notice any coolant leaking??

kev93z

its been missing for 2-3 months with no coolant loss. the SES only comes on and flashes after i shift into 2nd at WOT and it misses bad. sometimes its not as bad and the SES doesnt come on, but i can feel the lack of acceleration still. kev