After cold water pressure washing (with average results) for about a year I decided to purchase my first diesel fired, 13 hp Honda dd driven system to improve out results as our client list grew. I have been very happy with results obtained however , Just 2 months and 25 hours into the new unit I experienced burner not firing. Upon taking to shop (under the 2 year warranty) I was informed that there was a diesel carbon ball the size of a tennis ball blocking the burner causing it not to fire. This carbon ball also created a secondary fire inside the burner etc etc etc. although this particular service will be covered under warranty the service department said that the manf probably would not cover burner replacement due to sulfur issues from the diesel. I have always purchased the low sulfur diesel. What do you think might be causing this? We do not abuse the unit and are very careful and quick to change out tools and use at least a 5 minute cool down before shutting off the equipment. I did install a 90 degree exhaust stack to redirect exhaust gases outside if my box truck,
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