Evinrude 1991 9.9

[Tum]

My evinrude model CEIOREIR 1991 Serial GO264326<br />gives me trouble. I have a very good spark, gas flow seem ok. (the plugs become wet) but i cant start it. I've changed the rings and the walls are in very good shape. I assume the compression is good. I've put a new carb kit. I,ve change for gas with octane 91 . Nothing goes. Any clue?

 

[JB]

Re: Evinrude 1991 9.9

Hi, Tum.<br /><br />Try this out:<br /><br /> http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=17;t=035166 <br /><br />Good luck.

 

[K Hultgre]

Re: Evinrude 1991 9.9

Any chance the spark plug wires are reversed?

 

[Tum]

Re: Evinrude 1991 9.9

JB. Thank you for the tip. It works

 

[Tum]

Re: Evinrude 1991 9.9

Thank you Keven H for your help. It is someting that i've checked

 

[Tum]

Re: Evinrude 1991 9.9

For sure i've followed every steps that were on the site you give me.On the step that says Squirt some fuel mix into the carb Does it attempt to start? Yes it start If yes, you have inadequate fuel. Troubleshoot fuel system.What does that mean inadequate fuel? What else do you do if a new kit have been put in the carb and gas reach the plugs? After i started it with fuel directly in the chamber, it runs very well. I am puzzle!

 

[Paul Moir]

Re: Evinrude 1991 9.9

You say it runs a little when you spray gas/oil mix down the carburator's throat? And the engine doesn't start at all? If so, there is not much left to check.<br />Are you sure the carburator's bowl is filling with gasoline when you pump the primer on the fuel line? If it is filling, there's something wrong with the carburator. Did you carefully clean it when you installed the new kit? Be certain the main oriface is not clogged.<br /><br />I am thinking that the wet sparkplugs are caused by an accumalation of a lean mixture. How tired was your arm when you checked the plugs? <br /><br />Good luck! <br /><br />Edited: One last thought - your choke is working correctly right?

 

[OBJ]

Re: Evinrude 1991 9.9

Hi Tum.....<br /><br />Here's something to look at. Look at the cam follower roller. It's located at the carb and rides on a cam attached to the "magneto" plate under the flywheel. Make sure there is no deep scores on the roller. If there are, replace the roller.<br /><br />Check the roller and cam are in sync. Look at the cam and you will see a pointer. When this pointer is aligned with the center of the roller, the throttle plate should just be opening up. Make adjustment with the allen head adjustment screw on the roller link.<br /><br />It sounds to me that the throttle plate is'nt opening a little when cold starting. A bad roller or one that is outta sync with the cam will cause that.<br /><br />Keep us posted....thanks.

 

[rodbolt]

Re: Evinrude 1991 9.9

Hello <br /> yep what they all said above. if it will run with pre-mix sprayed in the carb it is a fuel issue. always remember, suck, squeeze, bang and blow. if it does all this at the same time it runs. make sure the small black idle pick up hose is attaced to the jet holder properly.<br /> good luck and keep postng

 

[Tum]

Re: Evinrude 1991 9.9

Here is the full story of that Evinrude 9.9<br />The owner went to a marina to have it prepare for winter<br />Before, the motor was working pretty well<br />The next summer, it would not start so he went to another marina<br />To have it fixed. It seems they overall the carb.They told him to change the kind of fuell<br />That is why i’ve tried 87 50-1 and 91-octane-100-1 Since he could not start it and did not want so spend another 300.00$ he put it away for two years. When he brough it to me, i’ve check the carb. Clean it toroughly, blow every passage and put a new kit in it. But still can have it to start. I’ve put some pure gas in the combustion chamber and there it starts. I let let it run for a few minutes and stop it. I pull the rope and it start. Did it a few times and it starts. When i let it cool all night, it wont start the next morning. Unless i inject pure gas in the chamber.After cranking 3 times,(choke on) the plugs get wet but not flooded.I have a good hot spark, The compression is good(new rings) The gas does not ignite why? I cant start the dam thing unless i inject it Believe me, i am not a pro but car motors have no secret to me but this one baffle me.I have followed every tips i had.<br />Still cant start it. I am open to any suggestions beside trowing it away!!<br />PS: This motor is nearly brand new

 

[JB]

Re: Evinrude 1991 9.9

Tum.<br /><br />When it says you have inadequate fuel it means that fuel is not being put into the intake air stream by the carburetor.<br /><br />Fuel must go from the tank through the pickup tube, the primer bulb and hose, through the fuel pump and into the carb bowl. Then the jet orifices must allow it to be sucked into the airstream.<br /><br />Something above is not happening. You need to troubleshoot the fuel supply system. <br /><br />Do NOT assume that new parts are working properly. Do NOT assume that a "cleaned" carb is not plugged up or properly float valved. Do not assume that a fuel pump is pumping, fuel lines are not constricted or leaking air, a primer bulb is actually pumping or that a fuel tank pickup is not blocked.<br /><br />Good luck.

 

[Tum]

Re: Evinrude 1991 9.9

Hi JB<br />I thank you very much for your advice. I've recheck the carb and eventually i found something , i thing is wrong. I had to blow by mouth to find it. There is a passage with a metal screen rivetted. The passage was obstucted I've removed the screen and with a little drill i've push on what seems to be dirt agglomerated.I suppose agglomerated because the particle was bigger than the meshes in the screen. Now i have a nice passage. Should it be like that? But still, i do have trouble starting it. You are wright when you say there must be no fuel going in the airstream. What can i do if all the passage are clean and the jet orifices dont deliver. Another question, when the piston is TDC, if i rotate back and forth by hand, i hear a knock. I am suspicious. Is there slack on the wrist pin or crank or both? i am an amateur with those outboard motor. fortunatly for me, you're there. Thanks again

 

[OBJ]

Re: Evinrude 1991 9.9

Tum....if the little screen is on the side of the carb near the top, this is the float bowl vent. If the vent passage is plugged, you would essentially create a vacuum in the float bowl. This would not allow the gas to flow up to the throat. But, in your original post, you said once you get the motor to start, it runs fine. This would not be the case if the vent were plugged. But it is good that you got rid of any crud layin in there.<br /><br />There is some hesitation once the piston rolls to top dead center before it starts down. To check for any slop, put a screw driver against the piston and roll it up to top dead center. Roll the flywheel a little and with the screw driver, push against the piston. If the rod bearing is bad and has slop, you will be able to fell the piston drop a little when pushed against with the screwdriver.