Hello Everyone,
I picked up a boat motor trailer combo the other day because it was just to good to pass up. The motor on it is a 94 Mariner (Merc). I've got a fair amount of experience tinkering with this era Merc and have owned and used hard a 92 25 for years.
For a little background this motor appears to have very very low hours, it for sure has not been touched since 2006. Shows no discoloration on the head and the prop and lower paint isn't even scratched up. Was told by the seller that they purchased it along with several other boats for a research class that never really materialized so the boats were parked in storage most of their lives.
Anyways, what would be a possible cause for the lower but equal readings of 80psi (its a cheap HF tester but it can't be that far off)? I have not actually tried to start the motor, not planning on putting much work into it if the problem is serious internal damage. I'm fine with replacing head gaskets etc, but not going to mess with a full block rebuild.
Thanks!
I picked up a boat motor trailer combo the other day because it was just to good to pass up. The motor on it is a 94 Mariner (Merc). I've got a fair amount of experience tinkering with this era Merc and have owned and used hard a 92 25 for years.
For a little background this motor appears to have very very low hours, it for sure has not been touched since 2006. Shows no discoloration on the head and the prop and lower paint isn't even scratched up. Was told by the seller that they purchased it along with several other boats for a research class that never really materialized so the boats were parked in storage most of their lives.
Anyways, what would be a possible cause for the lower but equal readings of 80psi (its a cheap HF tester but it can't be that far off)? I have not actually tried to start the motor, not planning on putting much work into it if the problem is serious internal damage. I'm fine with replacing head gaskets etc, but not going to mess with a full block rebuild.
Thanks!