FORUM RULES UPDATED - The forum rules have been updated to continue to provide a friendly and safe environment for our member community. Please take a moment to review the updated rules and our terms of use and privacy policy. Click here for Forum Rules which has links to the 'terms of use' and 'privacy policy'.
So I picked up a Tacker with a Mercury 70. Outboard is a 2 carburetored 3 cylinder. My problem is when I look up the serial # number I can't find any information. Serial # is 6323616
I used one on my 78 stinger 75hp from the late 80's. Fit with no issues. I did have to buy 2 relays and build a wiring harness myself. I also have a newer control box with 3 wire trim switch.
Well didn't have to remove power head, was able to slide bottom plate down.
I definitely had water in each cylinder. Would greatly appreciate any advice on torque spec and cleaning up the plates.
Starts and idles fine. I've got 7/16 gap on all cylinders. Carbs are clean. Fuel is new, with 100% gas. Outboard bogs when going from idle to WOT. Under load it will not climb past about 3000 rpm.
1978 75hp pretty sure I'm getting water in cylinders.
Below are pics of the plugs.
Could a head gasket or exhaust manifold gaskets be the issue? Engine has 120 psi on all cylinders.
