Zongshen avr 3 qf 5.0 ea generator
Governor hunting is almost always a carburetor issue. Likely air leak (vacuum) between carburetor and engine intake. Make sure carburetor has not come loose. If carb/gasket mounting ok, suggest drain and replace fuel. Drain and clean the carburetor bowl as well.
If still hunting, likely the carburetor has fouled. You can try a fuel treatment e.g.1oz/gal seafoam and see if problem clears otherwise carb clean/rebuild or replace.
Hi!
We have a put together a guide here to assist you in these situations. It will guide you through testing and repairing the Generator. : https://www.generatorguru.com/need-help/
If you need any further help our Generator Engineers are happy to assist you.
Regards,The Generator Guru Team
SOURCE: 67 votage display on generator output.
Please stop making new problem threads each time you answer, instead post a comment to one of the 5 threads you already have open for this problem. It's getting hard to follow the conversation :-)
OK, now to the problem. You say you have checked 67 volts is displayed on the generator output, I think this means that you see 67 volts on the control panel display when the generator is running. This can be several different problems:
a) a bad CT/PT module that tells the controller the wrong voltage
b) a bad A/D module inside the controller itself
c) a bad voltage regulator
Get a real DMM meter and measure the voltages at the top side of the output (large) circuit breaker of the generator. Put the black lead of the meter on the neutral wire and then measure to each of the phase wires on the circuit breaker. If you get normal voltages then you probably have a bad A/D, if you get 67 volts on all 3 phases you have some other problem.
You still haven't told me what model/spec of generator this is, look on the data sticker on the generator cabinet.
Peace,
Carl
SOURCE: Generac portable generator doesn't produce power
Remove front cover on the genset and you will see the brushes and rings. Clean the rings if black with emory cloth and inspect brushes. Flash the fields by apply a 12V battery to the brushes. the brush closest to you or the bearing is connected to the positive side of battery and the back brush is negative. You have to do this with genset running. You should notice your voltage climb up to over 50Vac maybe even over 100Vac. Make sure to use rubber gloves when flashing fields and keep hands away from rotating parts. if voltage does increase when flashing the the voltage regulator is shot. If voltage does not climb then you will need a new genset or generator end.
SOURCE: black max 7kw generator high voltage output
Those voltage readings MAY be normal.
The AC waveform may cause your meter to read inaccurately. You would need to use a TRUE RMS meter to accurately read the voltage.
The siple meters actually read the AVERAGE voltage and then are calibrated to mulltiply it by the "form factor" for a sine wave. OFTEN these generators don't produce a clean sine wave. A square-ish wave will read higher on the garden variety meters.
Compare the brightness of a lamp comparing to when run on your utility.
The frequency depends on engine speed ... yours is running a bit fast...check it under at least half load and if off, adjust the govenor slightly.
Testimonial: "Still working on the problem but tips were a real help."
SOURCE: we have CAT Generator 465 kw since last 2 days we
check the carbon bushes on the coil, they might not be in proper contact thus giving no output
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