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View Full Version : ka-t missfire under load


ISpoolOldSchool
07-22-2013, 11:50 AM
Got a 1990 240sx that was converted to dohc and 5 speed. Also has a turbo setup with enthalpy tuned ecu, 550cc injectors, z32 maf. I was having some issues with it starting, chased down some wiring and I'm having some issue with the eccs relay, I replaced both 4 pin relays. Which made no diifference. I noticed only 8 volts going to my fuel pump, So I rewired it to a switch. Double checked timing, with a light and its good. My plugs are black, showing a rich condition.

The car idles and free revs perfectly fine, the second its under any load though it hesitates and will barely pull itself

There something up around that eccs relay. Although they are brand new, I have to tap them or jiggle the fusebox to get the ignition system to work.


Where should I start looking?

ze12o
07-25-2013, 12:03 AM
What's your spark plug gap?

Drift_FX
07-25-2013, 12:49 AM
^^^ this, you could be blowing out your spark.....

rwtf
07-25-2013, 01:52 AM
cts?:wan:






.....:naw: