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stoneman61

Onan engine problams

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stoneman61

I have a 1989 416 with an onan engine replaced the fuel pump took the carb off and cleaned it. i still cant get it to start. i also put in 2 new spark plugs. any suggestions. I need help !

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SylvanLakeWH

:text-welcomeconfetti:

 

Some of the Onan experts will be along shortly...

 

Oh and... They are gonna want pics!!!

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roadapples

         :WRS:

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Ed Kennell

The first step .. determine if you have spark .   Pull the plugs and make sure they are firing when you crank the engine.

If you have fire, the Onan will run if you spray fuel directly into the carb.

Second step is to determine why you do not have fuel delivery to the carb.

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Wishin4a416

Welcome to the forum and what Ed said.

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HokieAg07

In my experience, and this is after having the carbs apart for cleaning, that it is easier to fill the bowl with fuel with a squirt bottle rather than relying on the fuel pump to do all that. Much less frustration trying to get it to run consistently this way rather than waiting for bowl to fill via the pump, which is engine vacuum driven. 

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rick
On 11/13/2016 at 6:26 PM, HokieAg07 said:

In my experience, and this is after having the carbs apart for cleaning, that it is easier to fill the bowl with fuel with a squirt bottle rather than relying on the fuel pump to do all that. Much less frustration trying to get it to run consistently this way rather than waiting for bowl to fill via the pump, which is engine vacuum driven. 

Or install an electric fuel pump! Even after sitting awhile, some of the below the seat fuel tank models can grind on and on until the fuel gets to the carb. my 416H and 314-8 both have electric fuel pumps.Pull out choke, turn key on, wait until pump noise changes then start!

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entropy

This will help a great deal! Has a trouble shooting section as well. Also do a search for the demystification guide for Onan on this site. When I could not get mine running both those two guides helped me check every component of electrical system until I found the culprit.

P216_P218_P220_P224_Service_965-0762S.pdf

And welcome to the forum, bunch of good people here who will help if possible.

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stoneman61

Its been a while  since I was able to work on this tractor.  That being said I  just checked for spark and there is none. Any suggestions would be appreciated ,  thanks

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WH nut

Make sure you have 12v to the + side of the coil. if not run a jumper from the battery and see if you have spark.

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boomers_influence

stoneman

please used the link to the

service manual that was given by entropy.

pages 8-1 and 8-2.

thank you. boomer ( the used onan engine parts guy,

also NOS and new )

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woodchuckfarmer

Is your PTO lever disengaged  ?      Wayne

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