bobbuffalo43
Cadet
- Joined
- Jun 7, 2003
- Messages
- 11
Just purchased a 92 Ranger 482V bass boat with a 1992 Evinrude 150 V-6. Since it had not been run for 2 years, I drained the fuel tanks, carbs, gas lines and refilled with fresh fuel. On its maiden voyage it ran great (for a while) with speeds near 60. Then, after a 45-second high-speed run, it didn't have the power to get up to plane, even at full throttle. Sounded like a couple of cylinders were dead. After limping to the dock and returning home, I checked compression (92-102 psi) and spark (seemed OK at all plugs). Bottom 2 cylinders seemed cooler to touch than the upper 4. Also, water pressure during the test run was 3-4 lbs. at idle and about 28 at full throttle. Temp gauge rose pretty high (almost to top) at idle but went down to low-center immediately when throttle was advanced. Any ideas on the sudden drop in power? Is the temperature behavior normal for this engine?