I am helping my father out with his oil burner. He ran out of oil, I noticed a large amount of sludge in line blew out line, switched filters and nozzles and cleaned pump screen. Motor has play all looks well. I tired purging the line and I am bone dry. I cannot get any oil to pull through? Is it the pump that needs to be replaced or should I use a suction pump to get the oil up to burner then reconnect?
Was it working before you started working on it? If so...
1. Check for proper installation of pump gasket, if its a Suntec there's a right and wrong way to put it on.
2. Check gasket & seal of oil filter. If the gasket isn't installed and sealed tight, it will suck air all day. Open it back up. I usually wipe a little heating oil around both sides of gasket.
1 & 2 are pretty important, but even more important if its a lift job vs. a gravity job.
Then you're going to need to power purge it.
If that doesn't work, let us know, although at this point you're going to need a pro..
Thanks Steve, I had double checked all gaskets, I checked the oil line for any pin holes, I didn't find anything unusual. I decided to change the pump to a newer one with the notion that all the sludge that passed though the system must have clogged it. As soon as I replaced we struck black gold. All is working well now. Thanks for the help.