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Expert
251 Answers
- Posted on Jan 28, 2010
Re: My diesel burner on my pressure washer smokes real...
HI, here is a few pointers that may help you ,
- if the smoke is white , that usually indicates water in the diesel, empty fuel tank and replace/clean the fuel filter
- if the smoke is black that indicates excess diesel or unburnt fuel , normal fuel pump pressure is around 8 to 9 bar (you will need a gauge to check this ), another cause is often failure of the fuel nozzle to correctly atomise the fuel (remove nozzle and clean (a small sintered fuel filter inside this )
- the burner electrodes should have a blue angry looking spark across them ,when checked (BE VERY CAREFULL WHILST DOING THIS as in effect you have a flame thrower ), usual gapping distances are around 6 mm
- the electrodes should be sharp pointed and not rounded or pitted
- a final cause is commonly a leaking fuel solenoid which can cause fuel to drip into the burner/heating coil assembly ( replace the solenoid
as you can see this can often be a complex and dirty job to repair and it might be better to contact a local service agent in your area .
Hope this helps
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