My 1998 Merc 150 was recently rebuilt. Engine running good and have recently finished break in. Lately the tach reads approximately double of actual RPM. Then sometimes it gets back to "near" normal, but I don't beleive it's correct. Any Ideas?<br /><br />Thanks for your time.
Good day again!! I set my "cranking timing" with a fully charged battery (plugs out/grounded)to service manual specs. <br /><br />1998 Mercury 150 v6 - cranking timing 21 degrees BTDC. WOT timing 17 degrees BTDC. <br /><br />The engine runs great, idles very smooth and quite, good throttle...
Good day all! I just rebuilt my 1998 Mercury v6 150 and disabled the oil injection and have gone to oil premix in the tank. Can anyone advise me how to disable the alarm. I've disconnected the sensor to the oil injector "cap" and the oil motion sensor for the oil pump shaft by disconnecting the...
My Mercury 150 siezed a piston. After honing the cylinder (very light scaring) I was left within the specs of allowable tolerances. (STD. = 3.125 +.006 toelrance). The cylinder reads 3.129 with a high quality cylinder dial. <br /><br />The ring gap for this engine is between .018 and .025 max...
Does Merc (or a third party) make a replacement drive gear for the oil injector system that's not plastic? (1998 Merc 150 standard) <br /><br />This engineering design compares to GM's design on the window regulator. (Stupid) There, got that off my chest. <br /><br />I'm about to put back...
