3-Cylinder Gas Engine

[Paul Gibson]

I'm hoping someone can help me.I have a Ford, I believe it's an industrial tractor, I started it up yesterday and I was letting it warm up at a fast idle. It ran smooth for about five minutes then a BANG, and flames shot out the exhaust and she died. it will not refire.
I'm trying to find a manual but the numbers I have are leading me nowhere.
Help!
The tag under the hood reads as follows;
Tractor Number C378331
Model K5021K
Engine 3B17A
Unit 3D27B
Can anyone tell me where to start looking for the problem and a manual
Thank you

 

[souNdguy]

I'll bet you might have had some answers by now had you posted this on the FORD board!

If it won't run.. check spark.. if it has spark, check fuel..

( you might try reposting on the ford board! )

good luck.

these old ford engines are hard to kill unless you really work at it.

soundguy

 

[tractorsam]

Might also want to check your timing if you do still have spark. Pull the distributor cap and see if the rotor button is still turning. tractorsam

 

[Allan in NE]

A backfire is "almost always" caused by problems in the primary ignition.

Allan