2000 150 optimax repair

[SamDaFishMan]

Maybe you have water in your fuel tank. Have you tried using Seafoam?

I haven"t , but I definitely can

Don't waste you time going anywhere in SLC county for your Optimax.  Waste of time and money with no results.  Trust me.  Spent $1800, 4 trips to the shop and no results on my 2003 135.  Took it to Lee's, $780 later, found out the other folks reprogrammed it wrong, hacked wiring harness and a bunch of other BS hacks.  Flat didn't know what they were doing!  Thing now runs better than new!  Save your money and time and take it to Lee's.