You need to do the O2 sensor ECM upgrade, I have come across this on a number of 225s
iang6766 Today, 06:31 AMA wrecked exhaust valve seat is mentioned and replaced with a new seat . By the way the valve seat is machined in the cylinder head and they are not replaceable
Tegweni Today, 04:48 AMReturntrip. Regarding post number 43 here is what you can do. We often did this at the machine Shop to increase the compression slightly on the pure stocks
timguy Today, 02:50 AMThe 5 volts is referred to as "reference voltage". ECT, IAT., MAP, TPS sensors are all on that voltage line (hope I didn't miss any). If only
jgmo Today, 12:15 AM
Re: J15R4STC 2003 Johnson 15HP
Yes I have Tim... Don't really remember on what though. Most likely the very small hp model head bolts whereas one foot pound or so too much could lead
joereeves Today, 07:24 AM