help troubleshooting yamaha HPDI 175

Thread starter #1
I got the boat out after sitting from the end of August. I have a 2003 yamaha HPDI 175 on it. I hooked the water to it and cranked it. It fired right up and idled fine. The only problem is when I push the hot foot it will bog down. I thought it was bad gas so I drained the gas and filled it up with 93 octane and put some gas treatment in it. It is still bogging down when I give it some gas. It sounds like a carberator problem but this motor doesn't have carbs. Can anyone help me figure out this problem???


Senior Member
Maybe the injection system needs to be cleaned. The injectors get clogged sometimes like the jets in a carburetor. Check the primer ball and make sure its not sucking flat as well.