DF 250 Not Idling

[Daniel clam]

My engine only runs on high Idle changed fuel bulb ,fuel separator. Can any one help me

[Moonlighter]

Daniel, you really need to be a lot more forthcoming with information and a full description of what is happening if you want someone to be able to five you some meaningful help.

Does your engine start, but immediately goes to a fast idle? What RPM does it go to?

And does it ever settle back to the normal idle speed of 650 rpm?

When it does this, can you get it into gear and run at speed? Does it perform normally once you get it up to cruise speed?

What other info can you provide?

Idle speed like as i have described above often occur as a result of a blocked or faulty IAC valve. Sometimes cleaning the IAC fixes it, sometimes the IAC needs to be replaced. If you do an advanced search in this forum on "replacing IAC valve" then you will find some relevant information.

[boashna]

cheap or old gas will do it connect fresh gas using 5 gallon gas tank or buy shell gas any grade

[boashna]

Unstable idling/trolling (or
engine tends to stall)
Clogged MAP sensor vacuum passage. Check the vacuum passage.
Malfunctioning TPS. Check the TPS sensor.
Faulty IAC system. Check the IAC system.
Fuel pressure out of specification. Check the fuel pressure.
Faulty injector or its circuit. Check the injector and its circuit.
Poor performance of the IAT sensor,
TPS or MAP sensor.
Check each sensor.
Faulty ECM. Replace.
Faulty spark plug. Replace.
Faulty ignition coil or its circuit. Check the ignition coil and its circuit.