496 Broke ?
 

i believe my 496 took a s**t. i was cruising on the bay about 40mph and the smart craft alarm starting beeping. i checked the gauges everything was normal except the fuel gauge was low. i came off plane figured the fuel quit sloshing around and everything was ok. after trying to take off the engine starting breaking up and missing. i stopped the boat again and notice this time the temp gauge was warm and rising. i started the boat again leaned over the back and it was pumping water, wtf... after sitting for about 20-30 minutes i went to re start the engine and the starter could barley turn the engine over. not like a low battery but like the internals had a tight spot and something was seizing up. after a 3 hour tow and drinking every beer in the boat here i am posting my story on a sunny sunday with a broke down p.o.s. so what do you guys think i should do.pull drive and engine ? any simple tests? cost effective repairs or replacemnts ? sorry abut the long post. all and any info appreciated.....

Did You Pull The Plugs And Check For Water.?

no, do you think it might be water reversion? is it possible with my application?

Pull the plugs

its possible in any application. How old is the engine?

bought boat new 2003 496 ho
150 hrs w/electric choice exhaust

pull the plugs. you may need to change the gasket for the riser also. Im sure some other people will chime in. good luck.

I had a battery issue that acted very similar to your problem. The batttery voltage dropped and then the alarms started going off. Then the engine would miss and backfire like crazy. I replaced the battery for that engine and all my problems went away. Check all the basics first before pulling a motor or outdrive.

the last couple of times out i thought the volt meter seemed higher than normal, but i thought it was just me..

Form one 496 owner to another with BS on the 496's.

While I did not have your problem on the 496, I had similar issues on 454 mags. Make sure that you do not have water in your oil. That will "freeze" the motors and hard to start.
Also check your starter conncetions make sure they are not corroded. I had injection problems with my 496's and they ran like chit.. (3out of the 8 was firing) Make sure there is no water in your tank or try to run it from fuel from a gas tank. (be carefull tho)
The 496's computers will try to compensate for anything if not right and then they won't run well or not at all. If you have a slightest exhaust leak the 496's will act up like no other. Have it put on the scope.
( I am still looking for a good serv. tech. in North of Tampa.) Anyone knows any??

. :angry-smiley-055: :angry-smiley-055: