Hi all,
i have an 06 21i with a 06 250 hpdi. Been having a issue with it. Little back story. Bought the boat in November after it’s been sitting for a couple of years. Changed all of the fuel filters and strainers. Sent the injectors out to be cleaned and tested. Ran great for the beginning of the season. Now it’s acting up intermittently. Runs perfect for the first couple of miles then all of a sudden the rpms drop to around 3700 wot and it loses torque for lack of a better term. Hole shot goes to crap. Idle is low. Around 400-500 but in neutral it won’t rev. Just dies. Put it in gear And it’s fine. Just not full power. It eventually will get on plane but won’t rev past 3700 rpm. Let it sit awhile then it goes back to normal for a few miles then the cycle starts again. Replaced the LP fuel pumps thinking they weren’t supplying enough fuel to the vst but no luck. Anything else I should have done since the boat has sat or a while? Worst part about this is the closest lake I can run the gas engine is a hour away lol. Any input is appreciated.