[Bob Allen]

As above my hydramaster  boxer is badly back firing and loosing power
is it likely to be just the plugs or something more serious, any help would be greatful.
I will be calling the professionals in the morning but got an early start
Many thanks in advance.

[absolutecleaning]

When my Chemtex was doing this a few months back Bob it seemed to be a bad batch of fuel.  I was sceptical when Woodbridge said try that but when I emptied my fuel and refilled elsewhere it sorted it immediately.