1985 mercury xr6150

J

jdubb

Recruit
Joined
Dec 14, 2005
Messages
5
I just replaced my voltage regulators and now have good voltage.Took the boat out and it ran fine but when I went to leave it would not get up on plane.Got it home and changed the plugs and they were black and oily.Dropped motor into tank and ran but still smoked and had a miss.Pulled wires off while running and had fire on all 6.There was a pretty heavy coat of oil on the surface of the water in the tank.Could this be a possible switchbox problem.Seems like the miss gets worse with higher rpms.Thanks
 
A

andy6374

Lieutenant Commander
Joined
Aug 4, 2005
Messages
1,617
Re: 1985 mercury xr6150

Check a spark gap tester and make sure the spark can jump at least a 7/16" gap.<br /><br />Describe the "not getting up to plane" problem. Is it getting bogged down or something else.
 
J

jdubb

Recruit
Joined
Dec 14, 2005
Messages
5
Re: 1985 mercury xr6150

As I was idling around looking for brush piles I could feel a miss and then feel it fire for a moment and then miss.I didnt think anything of it untill I went to move and when I went to accelerate and it would not get up on plane.It was real sluggish and vibrating(like a miss).
 
J

jdubb

Recruit
Joined
Dec 14, 2005
Messages
5
Re: 1985 mercury xr6150

can you check the switchbox with a oscilloscope?If not where can a person get a dva adapter?thanks
 
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