Have a 1993 175 Merc that has been giving me some problems.
8 months ago the boat would run great, then drop 3 cylinders. Went overseas for a wile so didn’t have time to mess with it.
The other day I replaced all the filters, and did a sea foam treatment… but it did the same thing out on the water yesterday. Of course runs great in the drive way and about 5 miles away from the hill.
When we got back to the boat yard I pulled the left 3 plug wires and fired it up… fired right up and sounded like it did on the water. Pulled the right side, and it would not start.
Long story short… left 3 spark plugs are not firing. Buddy said it has to be the switch box… do you guys concur with the diagnoses?
Oh ya, has all new plugs.
Thanks for your time reading this.
Who’s bright idea is it to close every boat repair store within 50 miles of Murrells Inlet on Sundays?
2502 trophy twin thirsty 175 mercs
“The Rum Runner”
Anybody want to sell there used 150-175 4 strokes? I am in the market.
