1991 Evenrude vro 200hp initial start no spark

[Woodybelle]

If the aftermarket (3rd party) parts are from reliable sources such as Sierra etc whereas the parts are new... I have no problem with them and have used some of those components from time to time with no complaints... BUT... if it is a company that takes faulty parts and rebuilds them, I'd suggest you avoid that sort of thing.

Parts off a running engine? That's a toss up really as you may be buying a part that's just about to fail... or on the other hand, you may be lucky and obtain a part that was replaced yesterday so to speak, just before a connecting rod let loose and flew thru the side of the block. In the past, I've sold quite a few used parts and always stood behind them, a few failed and were replaced or money was returned, whatever the customer preferred, but for the major portion of the sales (many years ago), as far as I know... those engines are still running.

I can only wish you luck in that area.

Poster has not been back since 10 years ago.---So it was a good fix.---Or he has switched to a new 4 stroke.---Money solves all issues.

At the engine... disconnect the Black/Yellow wire from the powerpack that leads to the ignition switch and kill switch. If you now have spark, there is intermittent short in either the ignition switch or the wiring harness leading from the engine to the ignition switch.

To determine which.... connect that Black/Yellow wire back to the powerpack, then disconnect the Black/Yellow wire from the ignition switch and kill switch.

If no spark... the short is in the wiring harness (somewhere).

If spark exists... the ignition switch is shorted, possibly the kill switch.

So I have a dumb question, if you don’t mind. I am working on 1996 Evinrude 150 V6 Looper with ignition troubles, now with an abundance of new parts. Rather than offer the long, boring history of ill-fated repair attempts, I believe I have isolated the problem to a ground fault in the motor harness (somewhere), as you suggested above. Initial visual inspection has not revealed any obvious issues, but I have not delved deeply into the testing. Any thoughts regarding testing procedure to pinpoint the location of the problem would be greatly appreciated.