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09-11-2022, 08:18 AM #1
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2004 Mercury 225hp EFI help!
Hey guys, I’m a little stumped and hope can get some help
I have a 2004 225hp merc EFI, running rough and no power
from what I can see 2 of 6 cylinders aren’t doing anything
compression is 100-105, not greatest but not terrible
the 2 cylinders that I suspect have super clean plugs, put brand new ones in and they don’t seem wet, no carbon on them like new, the other 4 had normal wear from running 20 minutes
i Checked the spark of course, has spark, I suspected injectors, put a new injector in one, same this plug always looks new
tested pulse at the injector and it has power
what should I test from here ?
has power, has spark, tested injector with a new one but no changes
it’s running very high idle on startup, I have the smart craft hooked up, flashing engine light, showing 2400rpm but don’t think it’s that high
help?? Thanks guys
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