Oil & Fuel John Deere 5103

[WARTIGER45]

As I was cutting today I had my RPM's at 2200. Every now and then the engine would rise up to 2300-2400 rpms and stay there for about a minute and then slowly go back down. This happened about five times in an hour of cutting. Then after cutting I lowered the rpms all the down and it seemed as if it took a little bit longer to reach idle speed. Does anyone know what this could be? I just had the tractor serviced at a John Deere store.

PS The engine never overheated or sputtered.

 

[Tx Jim]

I wonder if there's any air in fuel system or if cold start advance is malfunctioning? You might try disconnecting cold start sensor for a trial. Governor is in the inj pump.

 

[WARTIGER45]

It seems like it would be more of air-like symptoms in the fuel line. Is the best way to eliiminate this problem to just drain fuel line at the fuel filter?

 

[Tx Jim]

Actually it's best to bleed all the way to the inj pump galley.

 

[WARTIGER45]

Will the air eventually bleed out on it own?

 

[Tx Jim]

Too a certain extent but air compresses in injectors easier unlike diesel fuel.