mis-fire/buck

Post by **WeldingHank** » Thu Jun 30, 2005 12:07 pm

this just started happening latley. i have my S14 turbo on, and it didn't do it on the dyno. on the low end, if i mash the gas below 4000RPM, the car will buck and misfire. but as soon as i reach 4000RPM, it smooths out and pulls like crazy. what the heck's going on? i'm gonna change the plugs 1st, then go from there.

Post by **float_6969** » Thu Jun 30, 2005 12:15 pm

An intercooler piping leak would be my first guess.

Post by **WeldingHank** » Thu Jun 30, 2005 12:44 pm

boost comes on pretty quick and doesn't fluctuate, but it won't make over 5psi. on the dyno it was making 6.5-7psi. the thought never crossed my mind.

Post by **float_6969** » Thu Jun 30, 2005 2:00 pm

Get a can of Carb cleaner and start spraying all the connections on the intercooler, turbo, and manifold. I'll bet you find a leak.

Post by **slownslurious** » Thu Jun 30, 2005 3:46 pm

is the ECU throwng any codes? possibly coolant or knock sensor.

Post by **WeldingHank** » Thu Jun 30, 2005 4:57 pm

checked all the connections. they're tight and sound. i didn't get around to changing my sparks, so i am gonna try that tomorrow.

Post by **WeldingHank** » Fri Jul 01, 2005 5:52 pm

replaced the sparks, all is well.

Post by **8ggalant** » Sat Jul 02, 2005 9:54 am

WeldingHank wrote:replaced the sparks, all is well.

AWESOME new dyno sheet or ban

Post by **WeldingHank** » Sun Jul 03, 2005 6:45 am

i can't wait to get my 550's on with the NISMO FPR. i turned the boost up to 10psi yesterday and got on it in 2nd gear. when it hit 10psi i started loosing traction and let off. i'm affraid of breaking something. i can't wait to turn the boost up to 18psi.

mis-fire/buck

mis-fire/buck

Re: (float_6969)

Re: (slownslurious)

Re: (WeldingHank)

Re: (WeldingHank)

Re: (8ggalant)

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