Oil leak

[chigundo]

Bock oil burner on hot water tank. Had the pump replaced just over a year ago, and everything cleaned/serviced in November. I think this is a result of the technician not tightening something, but not sure.. it drips every a few every time it runs. I think it's coming from this screw pointed out in the picture below. Can I go ahead and try tightening that to see if that's all it needs? I just don't want to inadvertently make an adjustment to the pump.

http://i39.tinypic.com/dp8qqo.jpg

[heaterman]

That is just a 1/4" pipe plug. It is not any type of adjusting devise it just plugs an auxiliary port. It is a tapered plug and does not require any type of pipe dope or sealant. You can try tightening it with a 5/8 wrench. If it still leaks call for service because the oil could be actually coming from the pump seal or there could be oil running back the burner tube, these issues would require a tech.

[chigundo]

Thanks, Heaterman. If that screw just plugs a port.. and everything else was working properly, would oil leak from there if the screw was removed? If that's the case, tightening would be pretty futile I'd think. I'll give it a shot tonight though.. if I can tell it was loose while tightening then I'll hope for the best.. but if it's already pretty tight I'll have to give the tech a call.

[heaterman]

It will leak oil if you remove it.

[skippedover]

If you had a proper tune-up performed, the leak may be from the pump screen cover gasket. It's not uncommon for people to fail to tighten the cap screws properly. Just try to take a 1/4 turn on the 4 allen type bolt caps on that cover. That may stop the leak. It's unlikely the 1/4 in black plug has been removed since it was installed at the factory so my suspicion is that the oil is leaking at some more remote point on the pump and that plug just happens to be the lowest point, thus the drip.