Recent content by sparkhill

Good news! I think the low pressure/boost pump replacement solved it! But... I say "think" because I've only tested it in neutral....but it ran good at various RPMs for 30min+. A sea trial under load will be the true test. I will report back with the final/final. Thank you for helping me...

My understanding is this is the high pressure pump. It resides inside the CF2 housing mounted on the bottom port side of the engine.

My understanding is that this is the "boost" / low pressure pump. It's first in line from the fuel tank and is mounted on the top starboard side of the engine.

UPDATE: -Opened gas cap (in case suction was an issue) -Replaced fuel pump relay ***No Change*** Additional Tests: -After the fuel pressure bleeds down and the engine dies...when I attempt to restart the engine immediately the fuel pump(s) doesn't kick on when I engage the ignition. After...

Thanks again for the reply here! I think I can confidently rule out the vapor lock theory at this point due to two factors: (1) Engine cuts out at high RPMs while up on plane (this has happened to me twice) and I'm told when the fuel is moving that fast it wouldn't have time to "boil", (2) I...

UPDATE; Fuel rail pressure rides between 35-40psi until the engine reaches temp (6-8min). Then the needle abruptly drops to about 30psi and it bleeds all the way down to about 5psi over 5 seconds until the engine cuts out. Thoughts? Additional questions: (1) Is the proper pressure range for...

Ok, I will give this a try. Are the fuel gauge kits universal or do I need specific information to get the right one? I'll try running with the gas cap off as well to see if that does anything. Will report back with findings. Thanks!

Welp, the saga continues.... I swapped the ignition coil + distributor cap + rotor from the good engine and get the same result. I noticed that as the engine started to die giving it more throttle did nothing to bring the RPMs up. Maybe it's a fuel issue? Does anyone know what type of gauge...

In need of some serious help! My port engine (2021 repowered 6.2L Mercruiser MPI with ~75hrs): -Starts fine when cold -Maybe runs a little rough when in gear (not so much when running in neutral) -Sputters to a stop once it reaches operating temp (160F-ish?) after running for 6-10min -I can...