Hey guys,

Ok so I'm looking into a 2004 vmax, but the owner that is selling it tells me there is a couple of problems with it. From what he told me, 2 years ago the engine got submerged and because of this there were problems with the electronics and therefore the CDI got replaced and also the heads were replaced. Also the prop shaft is pretty banged up and bent. This engine is coming off a 28 ft fishing boat and while running at the speed of 48 mph and at 5600 rpm the motor starts shaking.

Guys got any ideas what the problem with the shaking is? and could it get easily fixed? He told me that when plugged to a laptop computer it gives nothing, no errors but the prop shaft should definately get replaced. Compression is good in all cylinders. Should I stay away? The price is pretty good and if it could easily get fixed then all the better.

Sorry if what I explained doesn't make much sense, my outboard mechanics knowledge is nothing great and so is the guy selling this engine. If more info is needed let me know and I'll speak to the yamaha dealer who works on this engine and where the engine currently is (tried calling the dealer today but its closed). Any help would be greatly aprreciated.