My 1989 Mercury 150 hp XR4 runs great when above 3 mph but when sitting in idle it sometimes "sneezes" a few times and then quits. Compression is 130-140 on all cylinders. Not sure what would cause this.
My 1989 Mercury 150 hp XR4 runs great when above 3 mph but when sitting in idle it sometimes "sneezes" a few times and then quits. Compression is 130-140 on all cylinders. Not sure what would cause this.
The sneeze is usually a sign that its lean.
advance idle timming just a touch
.................................................. ...the scariest thing in life is the unknown ...................................
How do I advance idle timming?
Had the same issue, yes advance timing you need to pick up a service manual it will show how to time the proper way
1986 Glasstream 150 XR2,SN OA933978, 24p Trophy Plus,"no jackplate" NO idle stabilizer until 04/13/21 put it back on UPDATE took it back off and use new S&L settings
Could also be a chipped reed ...but most the time ,what has been said up top .
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