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I am not getting a spark in my plugs. It's a Honeywell 12KW…

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I am not getting a...
I am not getting a spark in my plugs. It's a Honeywell 12KW gen. with 600 hours. Which are the possible causes.
Submitted: 7 months ago.Category: Small Engine
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Answered in 9 minutes by:
12/10/2017
Technician: Curtis B., Technician replied 7 months ago
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 31,405
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 7 months ago

Do you know the engine make and model? With a twin-engine and no park, likely a safety switch, maybe oil pressure, or the kill circuit is shorting out the spark.

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Customer reply replied 7 months ago
It's a Honeywell (Generac) model(###) ###-#### If by "twin engine" you mean two pistons, the answer is yes.
Customer reply replied 7 months ago
By Generac it's model GH990
Technician: Curtis B., Technician replied 7 months ago

Briggs twin engine, built for Generac. Check the oil pressure switch and the switch itself. Either can kill the spark.

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Customer reply replied 7 months ago
I disconnected the oil pressure switch and still didn't get a spark. Does this procedure rules out the oil pressure issue?
Customer reply replied 7 months ago
By the way, I disconnected both wires. Maybe I had to disconnect only one. If so, which one?
Technician: Curtis B., Technician replied 7 months ago

It does not matter, disconnect only one, and test.

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Customer reply replied 7 months ago
Dear Mr. Curtis B.: I went back to the generator and performed three tests on the oil pressure switch. First, disconnected one wire. Second, disconnected the other wire. Third, disconnected both wires. I all three tests I didn't get a spark.
You should know that battery is at 13.3V charge and gas is plentiful. Oil was recently changed and oil level is at its peak. Sparkplugs are company compliant and are new.
So, what would you recommend should be our next "killer" test. The fuel regulator?
Regards, Mario
Technician: Curtis B., Technician replied 7 months ago

Fuel solenoid would not kill spark. Do you get any error codes on the panel? Do you have the owners manual showing the wiring diagram, that would show the various items that would affect spark?

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Customer reply replied 7 months ago
No error codes, but red light is on on the main panel until I start cranking the gen; then it turns green.
I have a wiring diagram, but I can't tell which items affect spark.
There is an issue with wire #14, in which the trouble shooting guide of the manual says that it may be "open."
It is easy to follow wire 14 in the schematics; but in practice I just cannot find it.
Regards, Mario
Technician: Curtis B., Technician replied 7 months ago

I don't have an answer, so I will opt out, Maybe Hank will respond, as he is the Generac EXPERT

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Customer reply replied 7 months ago
Dear Mr Curtis B., sorry you opt out. All I want from you guys is a step by step test schedule to see where is the fault before I reach the conclusion that the problem is in the ignition coil. Let's find out where wire #14 is failing.
Regards, Mario
Technician: JohnF2015, Technician replied 7 months ago
JohnF2015
JohnF2015, Technician
Category: Small Engine
Satisfied Customers: 1,227
Experience: Owner/Service Technician at S & J Small Engines
Verified
The simplest way to know if it is a wiring issue or a coil issue is to unplug the small ground wire that is plugged onto the ignition coil. If the unit has spark then, you will know that the wiring is the problem. If you still have no spark then the ignition coils are the problem.Thank you for choosing to use our services.Please take a moment to rate your experience using the star rating system that is provided for you.
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Customer reply replied 7 months ago
I'll have to find where that grounded wire is. In fact, I'll have to find the wire first. Wish me luck.
Regards, Mario
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