Serial Number ID and no spark issue

[PROVA MO]

Looking for assistance with a 40hp Mercury: Engine died idling up to dock (lucky!) and would not restart. In went a fresh set of plugs, and attempted restart. No start, pulled fresh plugs finding them fuel fouled. My questions are these:

1. What engine is this? The serial number is 0D068861.
2. How do I test the ignition system?



Thank you for any assistance provided!

 

[gm280]

The fact that you have zero spark on all cylinders could be the kill switch or something that effects the entire ignition system. So look for the common denominator for the ignition system and not so much about individual cylinder spark coils and such. And all the spark plugs being wet (fuel soaked) is because the ignition doesn't work so that is to be expected. A good schematic diagram would be the first thing I would look for. I tried to look up the year of your engine, but haven't found anything that looked correct not seeing your engine personally. Try going to boat dot net (remove the word dot) and see what you can find that does look like your engine. The you can get the year and a lot of break downs and part listings. JMHO

 

[GA_Boater]

You have a 1991 Merc. Here is your parts diagrams - http://www.iboats.com/MERCURY-40-HP-...iew_id.1701649

And you need a manual, even the much maligned Seloc manual will give you troubleshooting guidelines and repair help for non-professionals. http://www.iboats.com/Mercury-Marin...5895223--session_id.984414195--view_id.688596

40

1991

ELHPTO

D000750 - D081999