started missing?

[jutwit]

my freeda has started to misfire, i dont know if that is possible with a diesel but thats what it feels like, i start her up and thats no problem then about 5 seconds later the miss kicks in, it might just do it the once or it might do it quite a lot more, if i give it a rev it goes away and doesnt come back untill the next time she is started, it runs like a dream apart from that. a neighbour reckons its sucking air into the system, but would it do it all the time if that was the case? could it be the heater plugs? or anything else ? any ideas.

[missfixit70]

Glow plug on its way/gone.

[Tripewriter]

Or water in the fuel!

[Tripewriter]

OR it is sucking air into the system check the small rubber fuel connector which is hidden behind the inlet manifold and caries unused fuel back to the tank.