all yeah boy
Seaman
- Joined
- Aug 21, 2007
- Messages
- 53
Hi everyone, I got a merc I/o running today. I think it is a 1974 or 1975 motor. the boat is from 1975. The motor is a 165 HP stright 6. I think this a gmc 250.
I noticed a sticker on the motor that said that said to use leaded fuel. Is this correct? That is the first question.
The second question is about the compression. After I got it running I took it to normal operating temp. Then compression tested it. The results were 90 psi in all of the valves. This seems a bit low but at least they are similar values. Any thoughts?
The reason i ask is because I am thinking or restoring this boat and want to be sure it will have a strong motor. I have spare parts for it, everything except a block and out drive. I will have to pull the motor for the restore. But want some info on how big a job it would be to get the compression back up, if need be.
Any info would be great.
I noticed a sticker on the motor that said that said to use leaded fuel. Is this correct? That is the first question.
The second question is about the compression. After I got it running I took it to normal operating temp. Then compression tested it. The results were 90 psi in all of the valves. This seems a bit low but at least they are similar values. Any thoughts?
The reason i ask is because I am thinking or restoring this boat and want to be sure it will have a strong motor. I have spare parts for it, everything except a block and out drive. I will have to pull the motor for the restore. But want some info on how big a job it would be to get the compression back up, if need be.
Any info would be great.