Hello All,
I picked up a Johnson 115HP from 83 (J115TLCTE) from a family member. I fixed an old 25Hp Johnson last yea but this is proving to be more difficult.
My cylinder 1 compression is 10 PSI lower than the rest.
1 - 108
2 - 118
3 - 119
4 - 118
Is this a difference I should be worried about? The manual says a 5 PSI difference is too high but found conflicting info online. Don't want to sink too much money into it if its a lost cause.
Is there any tricks for bringing the compression up? Or is the only method pulling the piston and the ring?
Runs and idles (rough but that's probably because I have lots of other tasks on it still to do and its below freezing in the Midwest right now.)
I'm sure this topic has been up before but I couldn't find one with only a small PSI difference.
I appreciate any feedback or advice!
I picked up a Johnson 115HP from 83 (J115TLCTE) from a family member. I fixed an old 25Hp Johnson last yea but this is proving to be more difficult.
My cylinder 1 compression is 10 PSI lower than the rest.
1 - 108
2 - 118
3 - 119
4 - 118
Is this a difference I should be worried about? The manual says a 5 PSI difference is too high but found conflicting info online. Don't want to sink too much money into it if its a lost cause.
Is there any tricks for bringing the compression up? Or is the only method pulling the piston and the ring?
Runs and idles (rough but that's probably because I have lots of other tasks on it still to do and its below freezing in the Midwest right now.)
I'm sure this topic has been up before but I couldn't find one with only a small PSI difference.
I appreciate any feedback or advice!