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Rb25 No Spark!

apl

By apl,
in Engines & Forced Induction

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apl Apprentice

apl

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The ecu is tuned to run an rb25. Its an r33 rb25. Using the rb20 wiring harness and ignitor. They are splitfire coilpacks which work for r32 or r33s.

I am getting a very small spark on #2 and #3 like i said. I did just move the battery to the trunk, so i tried running the ground wire all the way up to the engine instead of grounding it in the trunk.. no difference. Any ideas?

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apl Apprentice

apl

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I tested the voltages that were going into the ignitor from the ecu.. The fsm says 0.1-0.3v on the input side of the ignitor, and 7-9v on the output. Both when engine is running, but keep in mind all i can do is crank.

#1 33mv (something small)

#2 1.1v

#3 1.1v

#4 1.0v

#5 (something small)

#6 0.75v

There was a very very small spark on #2, #3, and #4. Also the voltages from the output side of the ignitor were no where near 7-9v, they were smaller than the input voltages. A little confused with this as teh ecu is seems to be sending too much voltage and the ignitor isnt doing ****.

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