no whistle while burning

[ephratah service]

My burner used to whistle when it was burning it no longer does that. Any one have any clue why this is I dont think the flame looks as good as it used to. It is a clean burn 86ah.

[ShopSpecialties]

Air 12-14 psi ?

What color is the flame ? Should be bright yellow with orange tips.

[ephratah service]

I have tried more pressure or less pressure and just cant seem to get it right I have played with oil pressure and air band. I cant seem to get rid of the sparkles in the tips.

[ShopSpecialties]

Sparkles could be a variety of things. Water/anti-freeze will usually throw out big sparkles. Smaller ones could be lean from to much compressed air/combustion air or not enough oil. Also make sure both heating elements are working good.

[ephratah service]

heaters are both working just replaced the 50 watt one and have checked the other one the preheat block is around 140 if I check with a temp gun.I am thinking about removing the heater block and cleaning it off the gun with an ultra sonic cleaner I am not sure how big a job it is.

[ephratah service]

took burner apart today ultrasonic cleaned block and tested heaters cleaned the retention head readjusted the electrodes. I have a nice flame now running 3 pounds oil pressure and 15 pounds of shop air burn air band just cracked open a little.

[doug]

when my burner was throwing sparkles i cleaned everything and/or replaced some things in the burner. my problem was the metering pump screen and filter were almost plugged. cleaning them solved my problem.