1989 Evinrude 155 Commercial

[asgrinne]

On a 1989 4-Winns 205 Sundowner Cuddy.<br />Boat wieghs about 2500 with motor. <br />Motor runs great low speed, no wake. Smooth. <br />Were only able to get about 2500-3500 RPM by guesstimation. Gauge is broke of course. <br />Of course waiting for the manual to come in. Driving me nuts why we can't get rpm. We actually tried 3 diff props to rule that out. <br />Tried to time it. no change. <br />Guess need to check fuel vent, carbs? <br />Considering it was doa last weds we came a long way just need rpm. <br />Thanks for any advice you may have.

 

[asgrinne]

Re: 1989 Evinrude 155 Commercial

Sorry does anybody have any thoughts???

 

[thosch]

Re: 1989 Evinrude 155 Commercial

Have you verified it is firing on all cylinders? It can run pretty smooth at low speed and still be missing a cylinder.

 

[asgrinne]

Re: 1989 Evinrude 155 Commercial

Have not run compression test, no manual yet to say what is good or bad pressure wise. <br />That is next on the list. <br />We did put new plugs in, the only thing that changed was it backfired twice and started like normal. <br />Timing is maybe messed up. Again waiting for manual to help with the specs. <br />If it was missing a whole clyinder would it get a 2600 lb loaded boat to 33 mph? <br />Thanks

 

[Bear]

Re: 1989 Evinrude 155 Commercial

Try the bulb when this happends @ 2500 rpm. I think it is the fuel pump. A small hole in the diaphram.<br /><br />Bear

 

[asgrinne]

Re: 1989 Evinrude 155 Commercial

Makes sense, <br />Also have to check fuel filters. I suppose that if they are messed up it may be getting enough juice to go slow. But the strange thing it does not sputter or stall. <br />Suggestions are greatly appreciated. <br />Boating on a budget! Right. <br />"Boat hole is water surrounded by wood into which one throws money"!