a little over a year ago i bought a used boat with 2007 suzuki df 200 on it. a suzuki mechanic told me that i dont need to do a compression test on it if it turns up to the proper rpm range. terrible advice...
after a summer of use on the chesapeake bay i had to add about 3 qts of engine oil. about 1/2 way through the summer i started noticing a little bit of oil coming up from the lower unit. oil appeared thin but just to be sure i ruled out lower unit oil leak with a pressure test. so it seems the unburnt oil is coming out through the propeller exhaust. there is also a very thin film of oil on the engine head. took it for a 200 hr service and the mechanic told me it had over 8000 minutes of strait idle only time on the engine. He says that the issue is "valves not seating properly," due to excessive idle only time and that the oil im seeing is due to oil blowing by the valves because they are not seating properly. I have heard of issues like this on 4 stroke outboards through word of mouth. crabbers running trot lines in the chesapeake will generally idle from their docks to their trot lines, idle all day, then idle back home. This is the reason for the excessive idle time. mechanic says to keep the valves seating properly you need to run the engine at verying speeds to prevent this issue.
There is loss of compression but the engine still runs well and the mechanic told me "its the begining of the end," for the motor. He said it shouldnt leave me stranded as long as i keep oil in it, but i would get 1 maybe 2 more years out of it if im lucky.
He said i may get lucky by running the **** out of it and the valves might but probably wont reseat.
he also claims that the cost to fix the problem would be almost as much as a new motor.
does anyone have any suggestions, ideas, or experience with this? I really don't want to have to buy a new motor!!
Thanks for any input
c-hawk25
after a summer of use on the chesapeake bay i had to add about 3 qts of engine oil. about 1/2 way through the summer i started noticing a little bit of oil coming up from the lower unit. oil appeared thin but just to be sure i ruled out lower unit oil leak with a pressure test. so it seems the unburnt oil is coming out through the propeller exhaust. there is also a very thin film of oil on the engine head. took it for a 200 hr service and the mechanic told me it had over 8000 minutes of strait idle only time on the engine. He says that the issue is "valves not seating properly," due to excessive idle only time and that the oil im seeing is due to oil blowing by the valves because they are not seating properly. I have heard of issues like this on 4 stroke outboards through word of mouth. crabbers running trot lines in the chesapeake will generally idle from their docks to their trot lines, idle all day, then idle back home. This is the reason for the excessive idle time. mechanic says to keep the valves seating properly you need to run the engine at verying speeds to prevent this issue.
There is loss of compression but the engine still runs well and the mechanic told me "its the begining of the end," for the motor. He said it shouldnt leave me stranded as long as i keep oil in it, but i would get 1 maybe 2 more years out of it if im lucky.
He said i may get lucky by running the **** out of it and the valves might but probably wont reseat.
he also claims that the cost to fix the problem would be almost as much as a new motor.
does anyone have any suggestions, ideas, or experience with this? I really don't want to have to buy a new motor!!
Thanks for any input
c-hawk25