7.5 mercury outboard will not start?

Question

7.5 mercury will not start everytime. sprayed starter fluid in carb and sometimes it starts and other times it does not. any recommendations on what other methods i can try and what gap does the spark plug have to have?

Answer 1

i dunno will it? need more details than that.

Answer 2

1 - you need fresh gas

2- you need  compression add a drop of oil in spark plug hole then turn flywheel to lub

3- you need spark ,ck  mageto ,,a spark that produces 1/4 inch  jump .then  it should start,

providing your engine is not seized where you cannot  turn  flywheel

Answer 3

lots of scenarios for this: Bad/blocked fuel, Low compression, gunked up carb jets, bad plug, bad magneto/coil, bad spark plug wires, primer/choke bad (not working, broken).

1. check plugs/spark

2. check wires, plug/gap/spark

3. check compression

4. check to see that it is priming correctly/choke is operational

5. change fuel line filters

6 rebuild carb/replace fuel lines

Answer 4

DONT KNOW ABOUT THE FIRE ,but if ya re due the carb and then put a little motorkote in the oil it'el run like a champ!