26-02-2014, 05:22 AM
Might sound daft but go check your getting full throttle, put a brick on the pedal then go under bonnet and make sure the throttle arm is as far as it will go, If not do some adjusting, I had a similar problem when I first tryed to tune my pump, went from no power to slipping clutch when Jenks (forum member) worked out what I done wrong.