i did read the first post, but forgot the info so i stand crrected on 'that' matter,
and i'm correct, about the age , that model is close to ten years ago on the introduction date, and yes it was mfg and sold for several years
did he buy it new ? has it been used or stored ?
did he buy it used ?, how many hours on it ?
could be age and wear
he can run one on high and one on low, but can't run both on high
which total 2920va, when testing each one and adding them together
new that model should run both heaters
but it is NOT running like new, Not Now
given that the engine runs to a certain power level
and is not affected by the addition of more fuel
seems to indicate carbon build up in the cylinder head
many years ago i bought a dodge 6cylinder engine that acted like that
(actually a garage in Tenn installed in my van)
purred like a kitten, started like a dream, ran smooth as silk, would not drive over 45mph
they made good, the pulled it and replaced it with another engine
it is a possibility to be considered
