1987 merc 25xd compression good,new fuel pump,starts,idles well,runs good up to approx 1/2 throttle,engine starts to miss after approx 1/2 throttle and keeps missing until throttle turned back
1987 merc 25 hp,engine idles good,power good upto<br />1/2 throttle,then starts to bog,misses,no power,spark appears to good,compression good on both cyl(140 psi)
motor starts,idles,runs well up to approx 1/2<br />throttle then starts bogging down,missing,was running at approx full throttle when problem occured,cannot get past half throttle now,#1 plug<br />gets fouled,put new plugs in-same
1 have a 1988 merc 70 hp will run fine for weeks at time,then will stall and not restart for hours,has no spark when quits,when brought to dealer,runs fine,sat at dealer for 2 weeks,ran ever time,any ideas
