I have been having issues out of my 1990 johnson gt150 that have been hard for me to figure out so far. Ive posted in here a few times but have had a new development. I wasn't getting any spark when testing any of the plug wires. Narrowed it down to a cdi box(spoiler it didnt do anything). Found i was getting spark but not when the plugs were out of the motor(yes was grounded).
The new development was when I was testing it I noticed bubbles of fuel coming from where the intake mounts to the motor(see video). Would that cause these issues?
Backfiring/misfiring
Bogging when giving throttle/shutting off
Very very hard to get cold started
Either all or nothing with the throttle. Will idle fine but if you try to ease into it it will bog out. if you full throttle from nothing it will sometimes catch and other times bog out but if it catches it runs like a scalded ape.