105 ignition problem *please help*boat dies under load

[ginfantry83]

i have a 105 magnaforce model number 1059hd i only have spark at the number 4 cylinder. pulled plug while running #1 -#3 give no change what so ever when 4 is pulled motor dies. has four individual coils. i am at a loss because i did a compression test and have 120 on all four cylinders.the reason i found this issue is because when i put boat into water under load would die.

 

[GrindKore]

Re: 105 ignition problem *please help*boat dies under load

i have a 105 magnaforce model number 1059hd i only have spark at the number 4 cylinder. pulled plug while running #1 -#3 give no change what so ever when 4 is pulled motor dies. has four individual coils. i am at a loss because i did a compression test and have 120 on all four cylinders.the reason i found this issue is because when i put boat into water under load would die.

You have pretty much diagnosed the problem yourself, your motor is running on one cylinder. Get a CLYMERs manual and perform recommended ignition system troubleshooting steps to further narrow down the problem with your ignition.

 

[ginfantry83]

Re: 105 ignition problem *please help*boat dies under load

thank you for reply yes i have i am just looking for ideas from any one who may tell me where to start till i get my manual in the mail it has the magnaforce type II ignition and im wondering if i can switch this with something else or just where to start. thanks again for any help

 

[Frank Acampora]

Re: 105 ignition problem *please help*boat dies under load

If I understand you correctly and if it is indeed Magna-Power II ignition, then your module is bad.

In the past, the only option you had was to get components and change the ignition to a distributor, Motorola magna-Power system.

However, I am not quite sure but I believe that CDI.com now sells replacement modules for magna-Power II systems. Try them or try something like outboard ignitions.com Not quite sure on the names and addresses so Google them and see what comes up.

 

[ginfantry83]

Re: 105 ignition problem *please help*boat dies under load

frank thank you a bunch one question. what is the ignition module exactly. like i said i have worked on alot of cars in my life but not many outboards any help is great.

 

[Frank Acampora]

Re: 105 ignition problem *please help*boat dies under load

Only on the Magna-Power II systems, the ignition module is an all in one unit with charging coils, capacitors, and alternator stator located under the flywheel. There will be NO CD boxes mounted on a plate on the side of the engine. Looking up from under the flywheel, it looks like one piece but it is really several integrated components. The ones I have seen were red but it is possible that there were black ones too.

The idea was excellent in conception but unfortunately, very poor in design and execution.