Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 7Get this manual

Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 7

Quality of the image is intentionally reduced!

Section 1CTroubleshooting Used Spark Plug Analysis Normal Condition Chipped Insulator Wet Fouling (Oil Deposits) Cold Fouling Overheating High Speed Glazing Scavenger Deposits Pre-Ignition Damage Reve