A7 running issues

[Malcolm Parker]

The fuel pipe from the crankcase mounted SU fuel pump to the carb looks to take a tortuous route round the front of the engine cylinder block.   My Ulster rep has an SU down draught carb mounted high up in the engine compartment.   It is fed by an SU elactric fuel pump mounted on the scuttle.   The carb and fuel pipe keep cool and I have never had any problems,  My old Ulster rep used the mechanical SU pump like yours.  I found that when I was revving it hard the pump could not deliver sufficient fuel.