just got off the lake and i'm not happy.
I never ran the motor after I bought it because it was supposed to need exhaust baffle gaskets. I replaced the gaskets (filed down the ridge) and end seals with genuine merc parts. Looked into exhaust ports during this and they looked like new. pistons still had very obvious machining marks, no signs of scuffing.
Motor fires right up and idles a little rough but seems decent.
In neutral I give it wot and it slowly revs up to 5k ish but that's it. It seems like I can hear cylinders coming on and off like they are intermittently firing, almost sounds like a sluggish rev limiter.
In gear it will only rev enough for a fast troll but sounds like it is working really hard, again the cylinders are hit and miss. They will fire for a couple revolutions, then miss for 2-3 seconds. Cylinders aren't firing.
I cranked it with all the plugs out and they all were all firing. Carbs look to have recently been rebuilt.
I advanced the timing at 3/4 throttle to wot advance and farther and it seemed to run a little better. I also tried turning the flywheel one bolt set counter clockwise and then it seemed to really run better. I looked through the top and bottom carb and they looked fine. all carbs have fuel when the jet cover is cracked open.
Holding my hand over any of the three carbs will wet my hand with gas and slow down or kill the engine.
I don't know what's wrong, my only guess is I don't have something wired right with the wiring after I put the power head back on, or a power pack is bad.
as far as I know I put everything together right after the rebuild. Does anyone have a link to the wiring diagram for the motor? or a mercury power pack troubleshooting guide?
thanks for any help.
I never ran the motor after I bought it because it was supposed to need exhaust baffle gaskets. I replaced the gaskets (filed down the ridge) and end seals with genuine merc parts. Looked into exhaust ports during this and they looked like new. pistons still had very obvious machining marks, no signs of scuffing.
Motor fires right up and idles a little rough but seems decent.
In neutral I give it wot and it slowly revs up to 5k ish but that's it. It seems like I can hear cylinders coming on and off like they are intermittently firing, almost sounds like a sluggish rev limiter.
In gear it will only rev enough for a fast troll but sounds like it is working really hard, again the cylinders are hit and miss. They will fire for a couple revolutions, then miss for 2-3 seconds. Cylinders aren't firing.
I cranked it with all the plugs out and they all were all firing. Carbs look to have recently been rebuilt.
I advanced the timing at 3/4 throttle to wot advance and farther and it seemed to run a little better. I also tried turning the flywheel one bolt set counter clockwise and then it seemed to really run better. I looked through the top and bottom carb and they looked fine. all carbs have fuel when the jet cover is cracked open.
Holding my hand over any of the three carbs will wet my hand with gas and slow down or kill the engine.
I don't know what's wrong, my only guess is I don't have something wired right with the wiring after I put the power head back on, or a power pack is bad.
as far as I know I put everything together right after the rebuild. Does anyone have a link to the wiring diagram for the motor? or a mercury power pack troubleshooting guide?
thanks for any help.