BF150 Bucking Down w/ Alarm Sounding Above 4500rpm

[chawk_man]

At this point it may pay you to purchase your own Dr. H diagnostic system. I think it's around $395.00

http://www.brpdiagnostics.com/honda-dr-h-outboard-diagnostic/

 

[hondadude]

I would not think a dealer would rent their Dr. H. I don't even let other non techs at work use the computer with Dr. H. Of course, it has a lot of other manufactures' diagnostics on it also.

If you have no current alarms, Dr. H would only be able to tell you number of overheats or overrevs that the motor had. Of course, it will allow you to visually see what the various sensors are telling the ECU.

If you suspect water in one of the cylinders, it is definitely time for a compression test and probably also a leak down test ( if the compression test shows a problem with that cylinder).

Mike