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1maidenfan

Onan BF 16 hp engine out of time??? spitting fuel out carb.

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1maidenfan

I have an 16hp Onan twin in my D160 and It is out of time according to my service/repair manual. It reads that you have to use a test light to check timing and the timing mark on the flywheel. I checked this according to my manual and the timing is off by roughly 13*.

My question is...can I adjust the pionts on this or is it an internal issue? I have not taken the flywheel off to check the timing marks on the cam and crank. Do I need to do that or can I adjust it at the points?

Thank you in advance for any and all replys and info.

John

Reason I was checking this is that I rebuilt the carb a few weeks ago and it ran great for 2 mowings, the 3rd mowing didnt even make it to the yard, I pulled the air cleaner and fuel was spitting out the top into the filter housing.

Any ideas?

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stevasaurus

Could be a stuck float or float valve, check the float for proper adjustment also. :)

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1maidenfan

Ok, I adjusted the valve clearence, off just slightly, got the timing set correctly. Fired it up and it ran for about 1-2 min and flooded out again :angry-banghead::angry-cussingblack::angry-tappingfoot:

Ok, carb comes off once again. I do believe the needle is sticking open, not sure why a new one would do this but sure seams that way. :confusion-confused:

Will have to order a new neddle valve and seat :confusion-waiting: as no one around here carries onan parts. :eusa-think:

I did check the adjustment on the float and it's dead on (1/8") according to manual.

Will see what happens with another new one. :confusion-seeingstars: :confusion-shrug:

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Herbl

Check to make sure the float is not taking on any gas, if the needle and seat are good then it's most likely the float..

Herb

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1maidenfan

Thanks for the suggestion on the float. I replaced the old composite one with a new metal one and when I took the carb apart, again, I found liquid in the floats. I believe this is my problem. I have contacted the seller I purchased the float from so hopefully I can get it replaced.

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