Ox66 weak fire

[Redneck04]

Ox66 cranked and ran fine for about 15 miles. Cranked up and it missed a few times and died. Now it will not crank and has weak fire on all cylinders. Any ideas.

[99yam40]

not much to go on
not even a motor model #
or how you determined it had weak Fire/spark

[rodbolt17]

cant happen
if it wont crank it will never fire.

you splatter gunning, poking and a hopin and blaming Yamaha.
why don't you post a model number?
post what it used to do.
post what its not doing now?/

[Redneck04]

Sorry. 2001 ox66 200hp. It ran perfect 15 miles or so with no issue. Stopped for a few minutes, cranked up and when giving throttle it missed a couple of times and died. Will not start now. It turns over strong with very weak fire to all cylinders. I know it is weak as I stuck screwdriver in plug wires and was able to hold. Could feel, but not strong. Saw weak spark when held against block.

Boat is at camp but will be bringing home soon. Just trying to get some ideas before getting it home.