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I have 78 115hp that is surging at mid range and wide open. It starts and idles fine. I replaced all fuels lines, new filter, rebuilt fuel pump, replaced internal wiring harness, all new spark plug wires and plugs. I even tried using a different fuel tank. The compression was between 133-135. After the new wires and plugs I tried it and it was still doing the same thing. I tested it in the driveway at night and it is arching from the boot to the cylinder head on all of them. I did use dielectric grease so I don't know if that is the problem.
The motor ran great no problems with it. I have a 77 Glastron Carlson I replaced the transom on. So I picked the motor up and had it on the stand until I was done then put it back on the transom. Hooked everything back up and now this is my problem. If anyone could help that'd be amazing. Thank you in advance.
The motor ran great no problems with it. I have a 77 Glastron Carlson I replaced the transom on. So I picked the motor up and had it on the stand until I was done then put it back on the transom. Hooked everything back up and now this is my problem. If anyone could help that'd be amazing. Thank you in advance.