ryanreynolds
New member
"My Mariner 1989 6-cyl engine after running almost flawlessly for years suddenly started missing and lost half its power. It starts just fine, seems to idle just fine, tested all the cylinders for spark - all ok, but just wont get going. As you pull away, sounds like its going to go, but then backs off and misses horribly...on off on off, and can bearly get onto the plane.
I have the mariner manual and have tested the trigger coil - all fine. Barring all other possibilities, i tested the stator coils. Both blue coils test fine and perfectly within limits. Now the recommended ohms for the red leads to ground are 90-200 ohms. The one is 145ohms the other is 60 ohms. This is 30 ohms less than 90 ohms. Would or could this be such a major contributor to my problem? Is this THE problem or could it be something else? The engine wont need tuning or wont have timing issues, it is so perfectly tuned i dont want to tamper with that. It was a sudden change while on the water the other day. Almost like something broke. I havnt tested the rectifier yet, as it seems this can also cause poor running if blown. The wires upon close inspection were perished and might have been touching the motor ground - hence my suspicion.
Thanks
Ryan"
I have the mariner manual and have tested the trigger coil - all fine. Barring all other possibilities, i tested the stator coils. Both blue coils test fine and perfectly within limits. Now the recommended ohms for the red leads to ground are 90-200 ohms. The one is 145ohms the other is 60 ohms. This is 30 ohms less than 90 ohms. Would or could this be such a major contributor to my problem? Is this THE problem or could it be something else? The engine wont need tuning or wont have timing issues, it is so perfectly tuned i dont want to tamper with that. It was a sudden change while on the water the other day. Almost like something broke. I havnt tested the rectifier yet, as it seems this can also cause poor running if blown. The wires upon close inspection were perished and might have been touching the motor ground - hence my suspicion.
Thanks
Ryan"