marinabrid Posted January 21, 2006 Report Posted January 21, 2006 well stripped the thing down no gauze in there d5w must be different to d3w different insides !cleaned reassemled put back exactly same. runs for 2 mins then floods and shuts down then a bit of unburned diesel trickel;s out have checked meter pump seems to put out the amount describedwhats wrong with this sodding thing Quote
johnb80 Posted January 21, 2006 Report Posted January 21, 2006 Air in the fuel line? I fly jet turbine powered models, if we get an air bubble in the fuel line it falmes out and then pours out smoke (unburned fuel). If the metering pump is sucking in air, when the air bubble gets to the burner the flame will go out, then the fuel is injected into a now extinguished heater. Just a thought. Regards - JB Quote
Masked Marauder Posted January 21, 2006 Report Posted January 21, 2006 There must be something that continues to glow. If it is not the gauze then it must be the tip of the glow plug or the flame sensor or something. Other than that I am all out of ideas. Quote
Masked Marauder Posted January 21, 2006 Report Posted January 21, 2006 Air in the fuel line? I fly jet turbine powered models, if we get an air bubble in the fuel line it falmes out and then pours out smoke (unburned fuel). If the metering pump is sucking in air, when the air bubble gets to the burner the flame will go out, then the fuel is injected into a now extinguished heater. Just a thought. Regards - JB Yes, I never thought of that, but would it be long enough for whatever is igniting the fuel to cool down? That said, it can't be ruled out. Martin, does it always go out at the sameish time? Quote
marinabrid Posted January 22, 2006 Author Report Posted January 22, 2006 yes the thing goes for 2 to 3 mins then excess unburnt fuel starts to drip out of the exhaust while its running , then seems to flood and shuts down, have unplugged the fuel hose even tried rstricting the flow, the fuel is getting pumped ok like a regular pulsing to the heater, on the d5w the burner is shown and the fuel supply pipe is a seperate union with a gauze around it, on the d3w mine, the fuel inlet pipe from the top is attached directly to the burner, the fuel runs down the pipe and into the burner chamber, the glow plug sits it a recess in the side of the burner, the burnr has a series of holes around the inside, there nothing else, nowhere for gauze to sit, however the gauze i got i cut that and sat it around the glow plug tip. what about these sensors, there a flame monitor under the glow plug, hows that work ? these sesors are all Quote
Galaxy Man Posted January 22, 2006 Report Posted January 22, 2006 I have just had a look at my metering pump(eyes full of muck) and noticed that 1 wire is not fixed to the pump, the connection that the wire used to connect to on the pump has completly come off.I will have to get a new metering pump now, I hope that was the reason why my heater did not start? Quote
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