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Topics - kingfisk

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Lister Based Generators / Lister Genset hunting
« on: June 16, 2017, 07:50:57 AM »
Hi
Last year I bought a second hand F G Wilson 3 phase genset powered by a Lister LPW3A081.
I live in a humid area, the fuel tank is metal. When first delivered it started well and then very soon smoked out and stalled. The transport had shaken up the fuel with water (and rust) at the bottom of the tank.
I replaced fuel and oil filters, oil and flushed the fuel tank, installed a water trap...all seemed well for several months using for an average of 4hrs pw a couple of hours at a time running a 3 phase table saw.
The engine now starts straight off and runs ok till warm and then starts to hunt, up to 400 rpm around the rated 1500rpm. It will hunt for 5-10 seconds then settle down for 10-15 seconds and then start hunting again.
I have replaced all fuel lines from tank to the fuel filter inlet, replaced the lift pump fuel filter and water trap filter.
The engine continues to hunt.
Does anyone suggestions to probable and /or possible causes and their remedies?

F G Wilson 12kva 3 phase build date 1998 rated rpm 1500
Cheers Richard

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