I am currently working on rebuilding my 1998 Johnson 225 that lost a locator pin in the #2 piston. During the teardown process, I found a few things that I was not sure if they were normal or not.
The first of these was that there was fuel present in the hose connecting the fuel pump to the pulse limiter on the block. Is this normal? I thought this may be a sign that I need to rebuild the fuel pump?
The other issue was that the bottom of the crankcase had a decent amount of oil built up in it (I will post a picture later). I thought this may be caused by a problem with the recirculatory system, but the one-way valve seems to operate properly.
Also, please tell me if this is correct. If the locator pin came out of the piston, this means that cylinder was running hot. I have plenty of water pressure. My water pressure gauge maxes out at 30, and it is usually pinned all the way around past 30, pushing against the pin. Therefore, the heat problem is probably caused by running lean? I am planning to rebuild that carburetor and put a clear line and fuel pressure gauge in the system to check that there is no air in the fuel. Is there anything else I should check that would cause it to run lean? I thought this might also be related to the fuel pump question above.
A little history on the motor. I had a previous problem with the fuel pump sucking air, that I believe caused the motor to blow up last time. I had some trouble finding this problem, and had maybe 15 hours on the rebuilt powerhead before I was able to find it. I had around 130 hours on the rebuilt powerhead before it blew.
Thanks for the help!
The first of these was that there was fuel present in the hose connecting the fuel pump to the pulse limiter on the block. Is this normal? I thought this may be a sign that I need to rebuild the fuel pump?
The other issue was that the bottom of the crankcase had a decent amount of oil built up in it (I will post a picture later). I thought this may be caused by a problem with the recirculatory system, but the one-way valve seems to operate properly.
Also, please tell me if this is correct. If the locator pin came out of the piston, this means that cylinder was running hot. I have plenty of water pressure. My water pressure gauge maxes out at 30, and it is usually pinned all the way around past 30, pushing against the pin. Therefore, the heat problem is probably caused by running lean? I am planning to rebuild that carburetor and put a clear line and fuel pressure gauge in the system to check that there is no air in the fuel. Is there anything else I should check that would cause it to run lean? I thought this might also be related to the fuel pump question above.
A little history on the motor. I had a previous problem with the fuel pump sucking air, that I believe caused the motor to blow up last time. I had some trouble finding this problem, and had maybe 15 hours on the rebuilt powerhead before I was able to find it. I had around 130 hours on the rebuilt powerhead before it blew.
Thanks for the help!