Re: Rear motor mounts 1986 Mercruiser 140
Ok, the funny part is coming...
Here is a pic of the old plugs from left to right cylinders 1-4
A bit tough to see in the picture but notice how 1 and 2 electrode show a normal light grey color burn on the electrode? 3-4 are all black...
Oh and one last clue. Just before I hoisted the motor into the boat a few weeks ago I wanted to start it and warm it up and change the oil. I figured since it sat all winter I would remove the plugs and squirt a tbsp of engine oil into the cylinders first. I re-installed the plugs and wires and tried to start it.
Very hard to start, strange it started so good in the fall but not now. Got it running but stalled several times, finally got it running and kept it reving a bit to warm it up, used a liter of fuel and shut it down, changed the oil and done.
Here is the best picture of the main reason for not starting, stalling at idle and severe shaking.
I remember having a huge brain fart when I hooked up the plug wires. It's clear in the pic the order I have is 1-4-3-2 instead of 1-3-4-2
I was looking at the cap counter clockwise thinking 1-2-3-4 and it clockwise so 1-4-3-2 would be the order. Explains plugs 3-4 all black and 1-2 were still correct and looked good. I'm also no stranger to seeing misfires causing shaking so I can imagine running on two cylinders might explain the motor looking like it was going to break off the rear mounts!!!
Sorry for the long story, thought you deserved it all. As I said it needed a tune up so I know where everything is at. I'm pretty sure this thing is going to run as smooth as a whistle next time i start it.
Like I said so so SO rookie. oh well it wasn't the worst lesson I've learned on this rebuild.
James
