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Waste Motor Oil / clean burn 525 oil pressure fluctuates
« on: November 12, 2019, 02:32:52 pm »
Hi I have a cleanburn 175 with a CB 525 gun. Installed it in 09 and ran trouble free for the first 5 years. Now the unit will run forever but the oil pressure creeps downward with time. setting it back at 2 psi i find that when the unit reaches temp then restarts later the pressure is too high. the longer its off the higher it may be. 5 psi will make the unit sputter and smoke and go on safety . but pressure is steady. lowering it to 2 psi gets it running fine, but after a several hours pressure goes as low a a half pound. set it a 2 psi and we are good as long as the unit never cycles. This is an on going problem and I have changed the regulator, Nozzle. cleaned the heater block and all filters. Pump maintains 25 psi at all times. With an open bleeder there is a full flow of oil without a bubble any Ideas would be helpful