Thanks for the detailed response. I assumed that some water could back flush when reducing power since my exhaust tips have a flapper in them, but I wasnt sure past that.
I used to do the adding AF with muffs, but it got to be a bit of a pain. I now just drain ( I have an easy drain knob) add AF...
I wanted to ask a couple of questions regarding winterizing techniques/ theory and I will try and be brief. These questions relate to things that I have read regarding different winterizing techniques. My motor is a 5.0
1. If a motor is run on muffs until it reaches operating temp, and then the...
Pulled boat onto driveway and put boat on muffs for flush about 30 minutes after being out of the water. Immediately got hot water out of starboard exhaust, but port side was cool. Ran for about 7 minutes with port side never getting hot. Also noticed starboard side had much better flow than...
I found this line (not a crack) on my boat. It starts dead in the center of where the transom meets the outdrive (at the top) and runs straight up for a few inches then gets fainter. You can actually feel a "raised" bead of gelcoat for about 2 inches. Guy on Baja forum said it was a centerline...
I am trying to get a better understanding of the water flow on my 2004 Merc 305 mpi. The diagram in my manual is a bit confusing to follow (too many arrows-with some going both directions). As such, let me ask this basic question:
If I were to drain the engine block of its cooling water and then...
I have a Merc 5.0 I/O that per the manual takes 5.5 quarts of oil. The manual does not reference levels "with or without" a filter change as do most auto manuals. After warming up engine and changing the oil and filter, the engine took only 4 quarts to reach the "fill" line. Even after running...
My 5.0 Mercruiser I/0 has the thermostat located in the thermostat housing instead of in the engine block. Is this due to the "open loop" cooling aspect regarding coolant flow, or for some other reason? Thanks
At the onset, I would like to thank those who dedicate their time to helping on this forum. Your help is simply invaluable to folks like myself who are just learning about marine engines or making a transition from other type of engine related activities.
I flushed my "thru hull" dual exhaust...
I decided to change my Alpha One Gen II impeller, so I obtained Mercury part # 817275K05. This kit is for drives s/n OD469859 and up - which my s/n OM xxxxxx falls within. For a "first timer", things went well until I installed the face (slinger) seal. The seal included had a bottom flared lip...
Would these hours concern you if you were interested in said boat? Seems very high to me, but I don't do much boat "cruising". More of a "hang out" at the local sand bar guy myself. The boat appears to be priced considerably lower than NADA (possibly because of the hours) but wont know much more...
I have what I thought was a 2003 ECM555 that turned out to be a2003 ECM0402. The Rinda diagnostic tool that I use shows 0.0 engine hours, 279,000 hours of mid range rpm usage (0.0 hours in all other ranges) and will not clear the rpm history. The adapter that I am using is for a standard 4 pin...
I have a 2004 5.0 Mercruiser with Alpha One that has developed a mystery noise from the alternator side of the motor. With the engine compartment closed, the noise sounds like a classic ticking lifter. With the engine compartment open, it sounds more like an exhaust leak. The boat has...
Greetings. I am about to embark on my first impeller replacement job and had a question about kits. I noticed that some kits have a replacement impeller metal cover and some do not. Is there any need to change the metal cover just as a matter of routine? or is it just a good idea to have one in...
I have a 23 foot single axle aluminum trailer with somewhat of an oddity. The axle does not appear to be centered inside the fender well. In fact, there is about three inches difference in the clearance between the front of the tire and the fender skirt and the back. As a matter of fact, you...
