BassHole559
Cadet
- Joined
- Aug 28, 2018
- Messages
- 17
Sorry, 2002 Merc XR6 150. Performed compression after idling for 10 minutes with a calibrated pressure gage. Pulled all spark plugs and did one cylinder at a time. Battery is 2 weeks old, and just came off the charge. Kill switch was off. The above reading were cranking for about 4 seconds each.
The decarb was with a 16 oz can of sea foam mixed with 1 gallon of fuel in an external tank. Idled 10 min, killed it, let sit for 5, start for 5, sit for 5, etc til 1 gallon was gone. On the last two runs I would bump throttle up to about 1200 rpm for a few seconds at a time occasionally.
It idles fine now, I twisted the oil pump link “in” one turn so it runs a tad leaner. Is this “super” risky? If you think so I’ll return it to factory and check my plugs after a few hours of use. I’m estimating that this will bring my mix to 110:1 vice 100:1 at idle, and 60:1 vice 50:1 at WOT. Using Kentucky yardage of course
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i’m really thinking the root cause of the bogging was those bleed lines. A few were not fully clogged but difficult to blow through compared to others. When I checked the check-valves I replaced lines with new ones. Maybe it wasn’t able to vent the oil properly and it was puddling at the bottom and fouling my plugs super quick causing misfires.
I wanna go fishing tonight so hopefully you get back to me about that oil pump link. I made a few hard runs with it the way it is now. No hesitation, pulled plugs, prong looks “almost” dry with some oil wetness down the center insulator.
Again, I cant thank you enough for helping me out with all this. I know you do this out of shear kindness to be helpful. Wish there were more people like you in the world. If your a mechanic, I owe ya atleast one hour of labor if you wanna send me an address to send a check to. Thanks again!
The decarb was with a 16 oz can of sea foam mixed with 1 gallon of fuel in an external tank. Idled 10 min, killed it, let sit for 5, start for 5, sit for 5, etc til 1 gallon was gone. On the last two runs I would bump throttle up to about 1200 rpm for a few seconds at a time occasionally.
It idles fine now, I twisted the oil pump link “in” one turn so it runs a tad leaner. Is this “super” risky? If you think so I’ll return it to factory and check my plugs after a few hours of use. I’m estimating that this will bring my mix to 110:1 vice 100:1 at idle, and 60:1 vice 50:1 at WOT. Using Kentucky yardage of course
. i’m really thinking the root cause of the bogging was those bleed lines. A few were not fully clogged but difficult to blow through compared to others. When I checked the check-valves I replaced lines with new ones. Maybe it wasn’t able to vent the oil properly and it was puddling at the bottom and fouling my plugs super quick causing misfires.
I wanna go fishing tonight so hopefully you get back to me about that oil pump link. I made a few hard runs with it the way it is now. No hesitation, pulled plugs, prong looks “almost” dry with some oil wetness down the center insulator.
Again, I cant thank you enough for helping me out with all this. I know you do this out of shear kindness to be helpful. Wish there were more people like you in the world. If your a mechanic, I owe ya atleast one hour of labor if you wanna send me an address to send a check to. Thanks again!
