Posted by steelhead55 on 11/29/17 - 6:37 PM
#10
I have some experience with these motors, having owned a 225 and a 70. These motors are extremely susceptible to bad gas, and water in the gas. Based on your symptoms, if your lucky it is just the high pressure fuel filter. If you are unlucky, it is the high pressure fuel pump, and or the low pressure fuel pump.
To test for the high pressure fuel pump, unplug the low pressure fuel pump and take a stethoscope to the motor and listen for the whirr of the high pressure fuel pump. If you do not hear it, thats your problem. Bad news, these pumps are all stupid expensive.