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Onan BF Will Not Crank


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  #1  
Old 11-07-2017, 12:13:33 AM
signmakerdoc signmakerdoc is offline
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Default Onan BF Will Not Crank

BF will not crank when start button is depressed, but resistor, and relay have been replaced
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Old 11-07-2017, 12:48:26 AM
nothingbutdarts nothingbutdarts is offline
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Default Re: BF Onan will not crank

Any more history on the set? Why were the resistor and relay replaced? Can you hear a relay click when you hit the start switch?
When you hold in the start switch are you getting voltage to the coil+ and fuel pump?
Is the starter solenoid new?
You should Please post the full model and serial number.
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Old 11-07-2017, 04:58:00 AM
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Default Re: BF Onan will not crank

Quote:
Originally Posted by signmakerdoc View Post
BF will not crank when start button is depressed, but resistor, and relay have been replaced
"...resistor, and relay have been replaced"

For what reason?
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Old 11-07-2017, 06:29:59 AM
JohnnyC JohnnyC is offline
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Default Re: BF Onan will not crank

Ah, did you replace the relay with an over the counter Ford relay from the autoparts store?

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New Jersey
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Old 11-07-2017, 02:54:55 PM
signmakerdoc signmakerdoc is offline
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Default Re: BF Onan will not crank

the unit is BF-3CR/16000B And No, it is not a generic relay, it purchased from Generator Specialists in North Lima, Oh. The resistor was changed because there was No resistance
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Old 11-07-2017, 03:28:12 PM
nothingbutdarts nothingbutdarts is offline
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Default Re: BF Onan will not crank

History of the set, something that just happened? Has it been running fine till now?
Do you hear a click when you push the start button?
When you say relay, you are talking about the little cube relay correct?
The starter solenoid is original?
I believe there are at least 1 fuse in the front panel or maybe two, have you checked those?
The resistor you replaced, is it the charge resistor in the back generator section?
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Old 11-07-2017, 03:46:28 PM
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Default Re: BF Onan will not crank

yes, the one in the control box, original solenoid, and yes the charge resistor, and still trying to Get running, removed heads to remove carbon, new head gaskets, torqued 16-18 lbs, new plugs, new oil pressure switch
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Old 11-07-2017, 03:46:40 PM
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Default Re: BF Onan will not crank

POLLUTION just like craigs list Lst your post several times BECAUSE YOU ARE SPECIAL
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Old 11-07-2017, 03:54:45 PM
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Default Re: BF Onan will not crank

Did it run before?

Do you hear clicking when you push start switch?

Fuses?

When you hold start switch, Do you hear clicking??????

Also when you hold start switch are you getting voltage to coil + ??????

Take a minute and answer these if you could.
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Old 11-07-2017, 04:05:12 PM
signmakerdoc signmakerdoc is offline
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Default Re: BF Onan will not crank

Been working on it from time to time sine I purchased it over a year ago. In one of my earliest posts, I had the problem of it starting, running for a couple minutes, then shutting down, so the replacement of these parts was an effort to correct the earlier problem
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