Search results

Mark, I know it's been a while but I am running into the same issue on my 350 MAG MPI on my 240 Sun Deck. Did this fix your issue?

Thank you!

Not yet. I am inspecting the manifold and injectors next week to try and get to the bottom of why it ran lean.

Yes, it is the base raw water-cooled motor, unfortunately. I am having my machine shop check out the heads and block , but the boat did a lot of sitting so the guides are not warn and the seats are in good shape with little carbon buildup.

Hi all! I purchased a project Sundeck 240 with a low-compression 5.0 MPI motor over the summer but am now facing a difficult decision on which engine to install into the boat. After teardown, I discovered the 5.0 ran lean and "tuliped" an intake valve in the problem cylinder. The bottom end and...