evinrude xp150 troubles

[rivervalley]

I just bought a Charger 185t with a Evinrude xp150 (both 1989) this is my first boat and Im having some troubles with the motor. First the motor seems to idle very low approx 600-700 RPMs, sometime it dies outwhen idling, is this too low? Second when I engauge the throttle into gear the engine will stall out if I do this slowly or if I idle down in slow no wake areas. The motor has a four blade stainless prop (13 1/4 X 25PP) Is this possibly too aggressive for this boat? lastly when I start the boat sometimes the starter engauges and then disengauge right away. Any help with these questions would be great. Im glad there is a place like this forum for beginers like myself to go and get some answers. THANKS

 

[emdsapmgr]

Re: evinrude xp150 troubles

Your engine should idle between 650-750 rpm, set when the boat is idling in gear while at normal level in the water. That's normal. You have a high pitch prop on that boat. While it may be just the right one, the high pitch will affect the idle rpm. It should idle fine with that prop, once you get it to the normal idle rpm range. You may need to kick it up to 800 with that prop. Just be sure to snap the throttle handle in gear each time you shift. If the engine struggles, including lean sneezing, it is possible that you may have some blockage in the idle passages of the upper carb bodies. A good cleaning with an aerosol carb cleaner will easily fix that. Any prop for that engine should permit it to run at the top end of the normal rpm range. On that engine the normal is between 4500-5500, per the factory. Current thinking is that you should prop the engine to run at least 5500 or up to 5700 at top end at full trim with just the driver in the boat. If you run 5300 or below at top end, you are lugging the engine-not good for extended periods of time. Check the bendix on the starter. It may need lube. Clean it with a carb cleaners and use a very light oil on it-definitely not a heavy grease. If you continue to have problems, try connecting jumper cables direct to the starter. If it appears to start better, you may have a start soleniod which is starting to go bad.