Mercury 5 HP 4-stroke won't start

[robinfla52]

I actually have a Tohatsu MFS5C. New carb, fuel pump, spark plug. Spark is strong. I spray fuel into spark plug hole, put plug back in. Pull cord and nothing, doesn't even fire up once. Same with start fluid. Flywheel never removed so I don't think it can be timing issue. I did ohm test on plug: .441 ohms. But when I check continuity I get no beeping sound. I pump primer bulb and fuel shoots out. Carb bowl has fuel. I am really puzzled.

 

[racerone]

How did it run for you last season?----What happened?-----Compression tested ?----Flywheel key checked?----Valve timing checked?

 

[Chris1956]

if it doesn't pop with starting fluid, you do not have any spark. period

 

[robinfla52]

I totally agree with you. That's what I don't understand, I take the plug out and ground it and pull cord and I get blue spark. I am going to wait until dark tonight and check again. Hard to do things without a helper.

 

[racerone]

Does spark jump a gap of 3/8" (9 mm ) on a test device?

 

[Mc Tool]

Stuck valve ? Stick your finger in the plug hole ,give it a pull on the starter and see if there is any compression .

if it doesn't pop with starting fluid, you do not have any spark. period

2nd line original post "spark is strong "