Engine running rough.... Here we go again !

[bigdog]

Reporting back to the Forum on test run....

Replaced 'Ignition Module Assembly' at the suggestion of a few on this forum.
Again, when I removed the original part, I was shocked to see this part
'basicall an exposed printed circuit board'. are you kidding me !
At least the new design of this part is encased in resin, totally protected from the environment or heat.

The maine engineer geniuses really blew this original design ! All those years studying at an engineering college and all that money for tuition.....
and that was the best design they could come up with..... Amazing !

I digress...... Back to the results......
Have taken boat on trilal runs now 3x, for more than 4hrs. Various levels
of speed/RPM's. NO ISSUES ! PTL !!!

Previous boat outings have produced engine caughing, backfiring, and stalling after only 20-30 min of use. Almost needed a tow a couple time, but was able to limp back to port.

Hopefully, this issue is finally resolved !
Guess I can put away my 1/2" wrentch, and thoughts about pulling the plug ! At least for the time being..... TBD..........

Oh, one last mention about Winterizing engin I'd like to get folks thoughts.

My guy who winterizes my boat, also runs a car dealership.
He just drains all headers, hoses, and any other orifices of water. He does not add anti-freeze, never has. His thoughts are, if there is no water in the engine, there is nothing to freeze ! Says he' never lost or had an engine crack as a result of this process yet ! Thoughts ?

Thanks everyone for all the advice, especially to MAXUM, who I believe
came up with the original diagnose, only through a similiar situation.

BD

[BroadHopper]

I usually run 4 gallons of antifreeze and forget the draining. Never had a problem. Advantge of keeping the antifreeze in the motor is a rust preventative. There is no air in the block to form rust.

[NoBozo]

Originally Posted by bigdog

The maine engineer geniuses really blew this original design ! All those years studying at an engineering college and all that money for tuition.....
and that was the best design they could come up with..... Amazing !

IBD

When we designed that module, the "Bean Counters" wouldn't let us encapsulate the circuit board because:

1. It would be Too Expensive.

2. Encapsulating the module would violate the Laws of Planned Obsolescence and the module would last longer, thereby slowing down future sales NB

[RI Swamp Yankee]

Originally Posted by bigdog

.... when I removed the original part, I was shocked to see this part 'basicall an exposed printed circuit board'. are you kidding me !
At least the new design of this part is encased in resin, totally protected from the environment or heat.....

Sorry if this is a bit off topic but several years ago I had alternator problems with a Dodge Caravan. It would fail to charge ONLY when the weather was wet!!! ... long story short ... I found part of the engine control circuit board that controlled the charging was not encapsulated, the rest of the board was ok. Dried the PC board, encapsulated it and end of problem.