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Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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1999 mercury 150 hp 2 stroke carb went to boat today started

Customer Question

1999 mercury 150 hp 2 stroke carb
went to boat today started and ran great using normal procedure prime bulb hold key 10 sec . Ended up not going out so shut down
went back 5 hours later to head out same procedure would not start at all whats wrong with it please help
Submitted: 1 year ago.
Category: Boat
Expert:  Tan replied 1 year ago.
Hello. My name is***** the stop/kill lanyard attached?If yes then we need to go through some test procedures. We need to check spark to rule this out.The spark must jump a 7/16" gap on a spark gap tester on all cylinders.Is this something you can do?I will also need the engine serial number to know which engine you have exactly.
Customer: replied 1 year ago.
new plugs no gap plugs
lanyard was connected
Customer: replied 1 year ago.
its a 1999 mercury bluewater 150hp 2 stroke
Expert:  Tan replied 1 year ago.
That isn't a spark gap tester. I need engine serial number please.Here is a spark gap tester for checking for spark on the engine. You connect this between engine ground and the spark plug wire. Crank engine and watch for spark. The engine needs spark, compression and fuel to run correctly. We know you have compression. So we have to check spark and fuel. If you have spark we know you have a fuel related issue. If no spark we know you have a ignition issue.

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