OMC I/O , GM V6, Starter, Prop.

[drack]

The starter will crank the engin on first try. If you stop cranking after 20 - 30 sec. if engine does not start and then try again all you hear is a click from the sol. . If you wait 10 to 15 min. the starter will crank again. Have replaced Bat. cables with new larger cables and cleaqned all contacts. Checked Bat. under load and it is fully chaarged. What next? If a new starter is needed where do I find one.<br /><br />Also when the engine is running it will not plane the boat and sounds like it is realy loaded down. Fuel pump and fuel flow is good. <br />The carb. has been rebuilt. Could it be the prop? The boat is a 16 foot cris craft bowrider. The boat was acquired used and we have no idea what prop is on it.

 

[Haut Medoc]

Re: OMC I/O , GM V6, Starter, Prop.

1)It shouldn't take 20-30 seconds to start the engine, are you pumping the throttle at all before attempting to start? 2) If you think you need a new starter, I would take it to the local re-build shop. 3) Could be the prop. Should have the size & pitch stamped somewhere. Has this boat been tuned up in recent memory?...J

 

[av8or09]

Re: OMC I/O , GM V6, Starter, Prop.

I have a 89 SUNBIRD 4.3 OMC/Cobra and last year I had an exhaust flapper get stuck and it did act just the way you described. Loss of upper end power and would not get on plane. Sounding like it was working real hard at full throttle too. My problem was the flapper had fouled up and stuck closed. I pulled both flappers and cleaned all the components,( I RTV'ed the rubber bushings to the exhaust pipe and greased all components, then replaced and everything went back to normal. I did not replace with new parts due to the great condition of the old. That was 30-40 hrs ago and no problems. Hope this helps!!