I'd start at the other end and eliminate the big ticket items first. Compression test, then look inside the exhaust system. If you have a bad head gasket or exhaust manifold issues you could be getting coolant in the exhaust and vice versa, which would cause the overheating. If you've had a manifold failure you could have scored cylinder walls or bad exhaust valves and the engine, or at least the heads, will have to come out. Cast iron manifolds last three to ten years in salt water. Assuming the compression and manifolds are good I'd be looking at ignition before fuel as a source of the problem. Lots of carbuetors get rebuilt because of ignition issues. With the marine environment and four year old engines you could have corrosion issues. I read an article by a well known insurance adjuster who stated the average gas engine in a boat has a life span of 900 hours or so, mostly because of the long periolds of time sitting cold in a harsh environment. Just my two cents.
John --- On Sun, 8/30/09, Mike <[email protected]> wrote: From: Mike <[email protected]> Subject: [UnifliteWorld] engine problems To: "UnifliteWorld" <[email protected]> Date: Sunday, August 30, 2009, 5:36 PM took my 32 ss out for some tubing with the kids today and had some issues with my starboard engine. I have marine power 350's with a little over 500 hours on them that are about 4 years old. Here is what I noticed, 1) more white smoke than usual coming out of exaust; 2) temps running a little hotter, that engine normally runs 140-150 but was showing about 165 3) engine was cutting in and out, you could see the tach running from 3200, down to 2000 like it was running out of gas but would reengage again. It was also doing it when we were running straight, so it wasnt because I was doing 360's. Tank was showing at least 30% full. second day in a row with tubing....could it be some crap from the bottom of the tank got stirred up? So should i be looking at fuel filter, then fuel pump? There is no noise coming from the engines, they sound good. ideas? --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/unifliteworld?hl=en -~----------~----~----~----~------~----~------~--~---
