-
EFI down on power
1998 200 EFI # OG636601 has a problem, struggles to get on plane and has lost about 700 RPM on top end and can be hard to restart. Mechanic says compression is good and charging system is working as should. A leaking intake gasket has been replaced along with a check valve in the VST system and also a thermostat but problem still exists. Mechanic thinks it might be the ECU because a couple of times it would run fine for a minute but would start acting up again. My question is that a friend has a 2000 EFI, sorry I don't have his serial number, and I'm wondering if his ECU would work on my motor, The # on his ECU is not the same as mine. Thank you very much for any and all help.
-
Mercury 3L/4 Stroke/Verado Moderator
Don't know what HP your friends engine is, some specific info on his would be helpful.
His engine likely has a later version program for CDM ignition.
-
Sorry Don but all I really know at this point is it is a 2000 200 efi, thanks for your help though I've learned a number of things from you watching this board. You have been very helpful.
Last edited by FTC; 06-25-2019 at 07:32 AM.
-
Tried a known good ECU of same part number today and did not fix problem. Thinking maybe switch boxes.
-
Mercury 3L/4 Stroke/Verado Moderator
Have spark on all six cylinders?
Inspected trigger AND TRIGGER HARNESS?
Reply With Quote
