You are not giving to much information.
Is your oil tank buried, or above ground.
There can be a hole if the lines run underground from the tank. This has happen on more than one occasion and the customer said he had checked them no leaks. Guess what they were leaking and he had oil leaking out underground. He changed every part even a new oil burner assembly before he did a good thorough check of his lines. When he found the leak and repaired it no more problems.
There is a screen in the oil pump that can get clogged. I once found part of the oil filter in the oil pump.
Check your pressures at the pump about 100PSIG
Hope this can lead you in the right direction.
* Of course you may need a HVC tech to do these checks for safety concerns.
Is your oil tank buried, or above ground.
There can be a hole if the lines run underground from the tank. This has happen on more than one occasion and the customer said he had checked them no leaks. Guess what they were leaking and he had oil leaking out underground. He changed every part even a new oil burner assembly before he did a good thorough check of his lines. When he found the leak and repaired it no more problems.
There is a screen in the oil pump that can get clogged. I once found part of the oil filter in the oil pump.
Check your pressures at the pump about 100PSIG
Hope this can lead you in the right direction.
* Of course you may need a HVC tech to do these checks for safety concerns.
