Here is my situation. I picked up a motor from a local estate, it is a 2002 Mercury 175 EFI. I took it into the local shop and they looked it over and told me the ECU computer is bad and I have 2 cylinders low on compresion...bummer. At this point I have a decision to make, I can go two different directions, rebuild the motor or cut my losses and sell as parts motor. I currently have a 2005 Mercury carb'd 115 on my bassboat that is underpowered, so I would be selling that motor to cover the expenses of a rebuild. To utilize this 175 EFI I would need to rebuild motor, buy new/used ECU and purchase new controls since it doesnt have any and possible service lower unit since the tech think it overheated at some point. I dont think there is anyone around the Cincinnati area that will rebuild this motor, the 2 shops I know of, one guy will not touch them and the other wants $4500 to put reman block on it so that may be a problem. I need some advice from the guys that have been at this point with their outboards before, what would you do? At this point I have $1200 invested in motor.
Compression test:
1=120
2=98
3=120
4=110
5=120
6=120