Thank you for the advice Vin,

Hi Dave,

U-acc1 currently reads 0.225
U-idle 0.91

It's in my Ultralightning with standard comp arf tanks and hopper, fuel pump is 4 inches from hopper tank, looking at this pump it looks pretty old, I am wondering if it is worth changing the pump, I'll try the uacc1 change first and see if it works, could it be because I am using a lipo battery? Maybe the voltage isnt holding? This is a brand new fully charged pack i am using. I am going through battery power like there is no tomorrow, flattens a 5000mah battery really quickly, from fully charged 6 start attempts and 60% power remaining, but these are only start attempts as the ignition times out.

I will try it again! Wish me luck