Symptom - misfire cylinder 2 and 3 read by OBDII code reader.
1997 Ford Escort LX 2.0L modified - 144k miles. full top end PnP, 50% UDP, NO2(not running until problem solved), MSD DIS coilpack, 19lb/hr accell inj's, Headers and hiflow cat, powered by an Optima group 34 batt(1175/990)... also running a dual POT's mod. Iridium plugs , new wires.....
this problem has been a thorn in my side for months now. the car idles off at times, slightly lower then norm, but recovers quickly. the POT's seems to overcome any misfire by raising the idle as it does, but once switched off, the idle falls to norms and a MIL kicks on. a normal am start is 1 stall and then normal idle on the second attempt. with POT's on, easy startup first attempt. compression is normal varying only 5 lbs per cylinder.
The OBD II code is a P0300 series code, random/multiple and/or cyl 2 - cyl 3 misfire
(no oil in coolant- no coolant in oil) No blown head gasket.
Im lost, Ive replaced almost every sensor and sending unit on the engine in the last 4 yrs. Its a bracket car/ and a VERY fun daily driver :) , and I need to get this solved before I dare chance an NOS shot!!
final question, am I lean on this setup?
Thursday, April 5th, 2007 AT 7:34 PM