Thought I would post a question since my brain is going a hundred mph and I wont be able to diagnose my issues until this weekend or next.
So I have a F.I. setup with a quad rotor whipple. I have been tuning on this engine for years myself and this year its better than ever. The tune is what I would consider close to perfect if not perfect. It has all the goodies-sensors, o2, map, mat, wt, fp, ot, ect... all the standard stuff.
So this weekend (Friday on the Delta for Hookey Day) the boat ran great as always. After about a 30 minute cruise up the river I did 2 WOT passes to see what it would do since the wife and kid were not onboard. The two passes were the best the boat has ran since I built/finished it. I was so stoked that I shut the engine down after the second pass to catch my breath, gloat, take a piss ect. I shut the engine down while it was still at about 3500 rpms and drifted to a stop. After saying F*#! ya a few times as the boat ran close to 120mph I went to restart it and it would not fire.
I was sure I blew a fuse, or broke a dist. gear as it sounded like no spark. Low and behold after being towed to the dock it was flooded. YEP FLOODED an EFI. After I pulled the fuse to the fuel pump and opened the throttle it fired right up. Now its like a few injecctors are stuck open as it is running so rich that the fuel gauge goes down (visibly) whether I am runnning 35 mph or 95mph. The transom was charcoal black but ir ran and its on the trailer.
I did a quick check and mechanically its fine, compression is all even.
What do the F.I. gurus think it is since I have a week or so before I can put a lap top to it.
I did the following;
1. compression check = all good. even across the board
2. pulled the flame arrestors and turned the key on and no injector was pumping fuel (static)
3. fuel pressure was still at the original 45psi.
did the ecu go?
did the map sensor go?
could it be related to the fuel pressure regulator?
any thoughts may help and put me at ease.