Test to the customer and then the return postage on 6.99 will not refund!

There is a high probability that the oil burner pump from old stocks comes and thus from the outset not functioning committee, neither nozzle print more oil suction vacuum builds up, or not long holds or reaches only just so much pressure over 8 bar can be but in no case reached and set a higher pressure.
To test whether or not you even Committee EURO 6.99 Return Postage have to pay themselves.