- Joined
- Nov 29, 2009
- Messages
- 7,439
I have a fuel injected mpi marine 350gm engine in my boat. Tested the fuel pressure and it goes to 80psi when running. That's pretty much the max psi of the high pressure pump I believe. Funny thing is if you add some injector cleaner to the tank and add some fresh fuel it usually runs good, so I bet that screen gets clogged with old fuel. I'm not sure if it's before or after the fuel filter though. Pretty sure it's after. Any merit to my theory. The people who built my crate motor said the regulators last a long time except in boats typically because they sit a lot usually. The regulator was like $35 so I decided to order it and throw it on before removing the old one. Didn't feel like making the whole garage smell like gasoline while waiting for parts.
