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Hello, my name is***** will assist you.
Have you done a compression test on the engine, and if so, what are the numbers?
Are you sure that it is running on all 6 cylinders currently?
What size it the boat and the prop?
Yes I am
When was the last time it ran correctly?
We do either by phone or in the internet. Which ever you wish.
What was done when the carbs were cleaned?
How was this done? There are several ways to do this.
Ok, Has the timing been checked at WOT to see if it is advancing?
Has a spark out out test been done?
Wide open Throttle
Remove the plugs, advance the throttle to WOT, hook a timing light to the top cylinder then have a helper crank the engine over while you shoot the timing at the flywheel. Should be around 24* ATDC.
Just reply back to me as you have been doing tonight.
Adjust the trigger to advance the timing.
While you are at it, do a spark test on all 6 cylinders. Make sure that they are all firing.
Personally would not reply on that hour meter. you do not know when it was added or if it works.
Thanks. Talk to you then.
Art, Sorry to hear about the engine. Most times a cylinder going down like that is either lack of oil due to a clogged carb or the engine got hot. You had wrote back on the 17th that a mech had done the compression and it was fine. Makes me wonder if it was or not. Although I personally have done one of these engines, rebuilt the carbs, water pump, and repaired some of the wiring, it was running great. We even test ran it on the river. Gave it to the customer, he blew it up the first day he had it out due to a design flaw in the exhaust back when the engine was made. It is prone to blow number 3 or 5 cylinder. In my opinion the engine is not worth the rebuild as it does take special tools to get done correctly, and the cost would be more than a newer used engine that you could just bolt onto the boat and be back out on the water.
Please let me know if you need any other information.