1990 225 yamaha prime starter

[jays225]

I no longer hear like a pump running when I turn the key on! Tested for voltage and was getting power with the key on, but before I replace the prime starter ($250) is there any other reason it would quit working? A sensor or anything? Wont idle, very hard to start, but is sluggish to get on a slide but runs good at WOT! My question I guess is if the pumps not working and has Power to it would anything else stop it from running???????? Any help would be greatly appreciated!!!!!! Thanks in advance!!!

[99yam40]

Are you asking about the pump or the prime start system

[jays225]

I beleive the prime start cause it has vacume(mechanical) style fuel pumps, the only thing with 12 volt going to it is the prime start! I assume that was the pump I used to hear running when you turn the key on?

[boats.net]

There isn't an electric pump on the engine of a 225, the 250 did. The prime starter is the choke system. Not sure what you hear running.