No SPark

johnson9.9

Recruit
Joined
Apr 15, 2010
Messages
1
Pulled the spark plug out and not getting any spark at plug. New Plugs. According to the model number on the ID plate it is a 10r74s
 

Lion hunter

Lieutenant Commander
Joined
Apr 9, 2005
Messages
1,529
Re: No SPark

It's a Johnson 9.9 1974.

1. Are you using a spark tester? These work alot better than trying to hold the plug to a ground.

2. Check the shorting switch (kill switch) unplug that and check for spark.

3. Pull flywheel and check points, wires, connections and magnets. Points are cheap enough that once you have the flywheel off you might as well change those and condenser to rule that out.

4.All thats left pretty much is the coil after that

Do you have good compression?
 
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