I jumped 5 to 6 contacts and pump ran for about 5mins and nothing..had to leave it then....I'll try your suggestion in the morning...thanksPersonally, I would take out the photosensor, put my thumb over it, start up the unit, and, once the electrodes start firing, I'd then shine a torch on the photosensor.
This will let the pump keep spinning even though it's not lit.
I'd then (quickly - as in immediately, not after 5 mins) crack off the air bleed grub screw on the pump.
I'd hope that bubbles would come out and then froth, and then a fair bit of liquid fuel. It might not, but I'd still do this as air locks can be a pain in these pumps.
I know it runs from a local jug of fuel, and it will seem like a nonsense, but, from experience, I would still do this. Again without a tigerloop they can be a pain to bleed.
If you get frothing from the bleed, wait a while until it's proper liquid and not just froth and tighten it all up again whist it's still spinning.
If you really don't get any froth even after keeping it spinning for some time with your torch on it, it's time to start thinking about other issues. But it's always good to go for the low hanging fruit / simple tests.
I know it seems like nonsense as you've bled the feed line and it works from a local tank, but, again, they're a pain often and, for the cost of 10 mins, you can then be much more certain as to whats going on.