Diesel mixed with oil in the sump

We are Perkins diesel generator OEM and can provide 22KW to 1800KW Perkins diesel generator including open type,silent type and container type genset. Each genset has its user's manual.

Normal starting procedure of Perkins Generator set

1. As far as possible do not start the generator set under load conditions.

2. Transfer the key switch to the starting (STAR) position. The engine should start immediately.

3. After the engine starts, return the key switch to the running (RUN) position. If the engine has not started after 10 seconds, turn the key switch back into operation and (RUN) for 10 seconds. Then repeat steps 2 and 3. If the engine is still unable to start after three attempts, please find out why.

4. After engine starts, follow steps 4.a and 4.b.

A. Check the oil pressure.
B. Check the machine for leaks.
C. Make sure the battery is charged.
D. After running the engine for five minutes, check the generator monitoring system. Make sure the engine works properly before loading.

Note: do not use ether-like spray starting aids in cold weather. Otherwise, it could lead to explosion and personal injury.

The use of water jacket heaters or extra battery capacity improves the machine's start-ability below 10 ?.

Methods for checking and cleaning the core of the rear cooler of Perkins generator set

Check for damage, corrosion, dirt, grease, insect stains, leaves, oil and other debris on the cooler. Clean the cooler if necessary.

https://www.dieselgeneratortech.com/generator-sets/Instruction-for-Perkins-Generator-Set-Maintenance.html

on the plate attached to the motor you will find several important items
one is the wattage of the motor
this is the maximum wattage that the motor uses when under load
the gen set will need to be at least 30% bigger than that figure
next there will the number of phases that the motor is
it will read as 1 ph or 3ph
If it is 1ph that is a single phase motor and will ru from a single phase gen set
however if it is 3ph you will need a 3ph gen set to run the motor
As most single phase motors are limited to around 5hp I would be very sure that the motor is not 3ph
specialist advice from an accredited electrician or electrical motor shop is recommended before buying a gen set. as if you need 3ph the gen sets become expensive.

Make sure all of the vents, on the engine are free of dirt. Check carb adjustment and adjust as needed

Check oil is correct grade and topped up. If OK overhaul engine.

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We are Perkins diesel generator OEM. Can provide 22KW to 2200KW diesel generator set with Perkins engine. https://www.dieselgeneratortech.com/perkins

Ensure any engine control switch is set to the run position, with the load disengaged. Manually set the air shut off valve (if fitted) to the run position (see Fig. 18), Turn the key switch to the start position, which will energize the solenoid allowing the engine to crank over for a few seconds then start.

Check the instrument panel is showing normal running oil pressure, and the ammeter for charge to the engine batteries.
Allow the engine to run for five minutes checking the instruments are reading correctly. Stop the engine and check the oil and coolant levels, replenish if necessary.


https://www.dieselgeneratortech.com/generator-sets/normal-starting-procedure-of-Perkins-generator-set.html

If the oil level is correct then you might be up for an oil pump. Some engines have an automatic cut-out for low oil pressure or high temperature as a safety mechanism to protect the engine from massive damage.

Low frequency means the RPM of the motor has fallen off.

Check your fuel is NOT contaminated or fuel filters plugged.

Further tests should focus on the govenor system. Possibly it fails when engine gets hot. the frequency is directly proportional to the engine speed.

I take it it's diesel. Have you renewed filters? Bleed fuel system Make sure there is plenty of diesel flowing out of tank (pipe not blocked) Check lift pump working

More than likely a safety control circuit on startup. Either high water temp, low oil pressure, or over rev condition. If not any of the above quite possibly the integratrated generator/engine control circuit board.
Allan