hi all I have a 74 merc 1150 with NGK HUBW plugs no gap what is the best way to ckeck for spark and how much spark am i looking for my motor just cranks and cranks and will not fire
Help please i just bought a boat with an old maybe 74 merc 1150
it did not cycle water when i bought it so i attempted replace the impeller of coarse, left it in nuetral pulled the drive off replaced the housing and impeller and now the prop spins clockwise with a clicking sound, but not counter...
