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My Onan GenSet 4000 (1994) was running good and now won't…

Customer Question
My Onan GenSet 4000...

My Onan GenSet 4000 (1994) was running good and now won't start. It will crank over, has 1/2 tank of fuel, batteries are up to full charge but it won't start.

Mechanic's Assistant: Do you have fuel in the tank? If so, is the shut-off valve open and the fuel clean?

Fuel is at 1/2 tank and clean and fresh.

Mechanic's Assistant: Do you plan on doing the work yourself?

If I can. I have some experience but mostly with auros.

Mechanic's Assistant: Anything else we should know to help you best?

I have a complete set 0f tools.

Submitted: 10 months ago.Category: Small Engine
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Customer reply replied 10 months ago
I am not aware of a shut off valve so it has not been shut off. The oil level is near the top of the marks on the dip stick. I took one spark plug out (the one easiest to get to) and checked for spark and there does not seem to have spark to the spark plugs.
Customer reply replied 10 months ago
What procedure should I follow to trouble shoot this engine?
Customer reply replied 10 months ago
I will check to see what paper work I have on this engine. I don't believe I have a manual.
Customer reply replied 10 months ago
The literature I have is an Operator's Manual and a Installation Manual but no repair manual.
Customer reply replied 10 months ago
This GenSet 4000 is either a model BGE or a NHE
Answered in 13 hours by:
9/22/2017
Technician: Curtis B., Technician replied 10 months ago
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 15,342
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert
Verified

Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!

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Technician: Curtis B., Technician replied 10 months ago

With it not having spark, the ignition coil may have failed. Find the coil and check to see if it has voltage to it. If it does, and park from coil, try a new coil.

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