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Gas heater priming.
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miscreantgnomie
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PostPosted: Sat Dec 08, 2007 2:29 pm    Post subject: Gas heater priming. Reply with quote

So im working on the heater. someone said to prime it so I guessed how you do that :p

I just filled the gas line going down to the pump with gas. used a funnel.

waiting for the gas to dry to see if this works :p

Hoping its not a bad way to di it and will blow up Smile
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miscreantgnomie
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PostPosted: Sat Dec 08, 2007 3:19 pm    Post subject: Its going again :) Reply with quote

YEs that worked Smile

thanks for whomever suggested that to fix my problem Smile
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howiesfamily
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PostPosted: Tue Dec 11, 2007 9:01 am    Post subject: Reply with quote

Did you just disconnect the hose from where it attaches to the heater and put fuel down it to the pump? My pump is clicking, but not squirting any fuel. It gets plenty of fuel to it but won't pump any through.

I also have to bypass the thermostat switch to get the heater to power on. The bimetal coiled thing won't turn far enough to allow the power to come on.
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Captain Spalding
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PostPosted: Tue Dec 11, 2007 9:58 am    Post subject: Reply with quote

howiesfamily wrote:
Did you just disconnect the hose from where it attaches to the heater and put fuel down it to the pump? My pump is clicking, but not squirting any fuel. It gets plenty of fuel to it but won't pump any through.

I also have to bypass the thermostat switch to get the heater to power on. The bimetal coiled thing won't turn far enough to allow the power to come on.


I'm not sure what Gnomie did, but generally priming concerns the line upstream of the pump. FWIW.
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miscreantgnomie
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PostPosted: Tue Dec 11, 2007 10:56 am    Post subject: Reply with quote

Yeah i disconected it at the heater used a funnel and filled the line up.

My pump was clicking just fine but nothing came out of the tube at the heater. i actually disconected both sides of the lines to the pump and clicked on the heater a sec and saw a small shot of gas come out then. After that I put it back together with new fuel hose just in case was restricting the flow.

Thats when I disconected it at the heater used a funnel and filled the line up. I then shoved it on dried up the few extra drips :p

It worked fine then.

Maybe it needs to have that fuels in the pump so by it flowing down it primed it to work.

We know it will be wet on tank side from flow.
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spaeth
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PostPosted: Tue Dec 11, 2007 11:20 am    Post subject: Reply with quote

I don't remember if it was me that gave you the tip here or not but I have passed that on to many people. My gas heaters sit all summer with no use. I sometimes try to remember to run them once a month, but if I miss a couple of months I need to prime again.

It is as simple as taking of the fuel line to the heater and using whatever safe method you can think of to get fuel down that line to the pump. Once the pump gets air in it, it will no longer draw fuel through.

This has been one of the main fixes I have had to do for my heaters.

Craig
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Ian Epperson
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PostPosted: Tue Dec 11, 2007 11:30 am    Post subject: Reply with quote

howiesfamily wrote:
Did you just disconnect the hose from where it attaches to the heater and put fuel down it to the pump? My pump is clicking, but not squirting any fuel. It gets plenty of fuel to it but won't pump any through.

I also have to bypass the thermostat switch to get the heater to power on. The bimetal coiled thing won't turn far enough to allow the power to come on.


You may also want to check to see if the pump was installed backwards. IIRC, gas shoots out of the side where the wires plug in.

http://veewiki.com/HeaterBN4

I've seen a bunch of BN4 gas heaters now, and most of them have a busted thermostat. Here's some ideas for changing for something different:
http://veewiki.com/HeaterBN4/ThermostatIdeas

(by the way, anyone can edit those VeeWiki pages to add or fix information)
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howiesfamily
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PostPosted: Sat Jan 05, 2008 3:13 pm    Post subject: Reply with quote

I beat on the fuel pump with a screwdriver and applied voltage to it in short bursts about 150 times and finally got fuel squirting out.

I fiddled with the thermostat and got it working also.

I'm getting 12 volts on the green wire to the pump but it is constant. Shouldn't the voltage to the pump be in pulses? I put some fuel in a syringe and manually fed it into the heater and it seemed to work. I could hear it ignite and burn while listening at the fender well.
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Ian Epperson
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PostPosted: Mon Jan 07, 2008 9:02 am    Post subject: Reply with quote

I've never thought to check, but it may be interrupting the ground wire. Did you check the voltage across the two wires, or the green to ground?

It should interrupt the 12v (or, maybe, ground) once or twice a second. A gear within the fan triggers the switch.
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Last edited by Ian Epperson on Mon Jan 07, 2008 12:12 pm; edited 1 time in total
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howiesfamily
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PostPosted: Mon Jan 07, 2008 10:52 am    Post subject: Reply with quote

I got the voltage reading by checking the green wire and grounding on a screw in the trunk. When I check across both the green and brown, I get no reading. I guess that means that somewhere in the brown wire, it isn't making ground. The brown wire is the one that goes into the fan housing so I'm guessing that the fan is supposed to complete the ground to send the signal. I suppose I'll have to pull the darned thing out and check inside.
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dan macmillan
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PostPosted: Tue Jan 08, 2008 10:12 am    Post subject: Reply with quote

Ian Epperson wrote:
I've never thought to check, but it may be interrupting the ground wire. Did you check the voltage across the two wires, or the green to ground?

It should interrupt the 12v (or, maybe, ground) once or twice a second. A gear within the fan triggers the switch.


A switch on the fan completes the ground circuit every 33 revolutions of the fan. You should see battey volts on both wires if they are both connected to the pump and the switch contacts are open. If the wires are disc from the pump you will see batt volts on one only
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505-73Thing
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PostPosted: Sat Dec 27, 2008 7:07 pm    Post subject: Lost Prime Reply with quote

Did not drive this week and I lost the prime to the pump. Primed it last week, tapped on the pump and fired right up. Used it severla days in a row then did not drive it for a week and lost the prime. Any suggestions?

Thanks
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kme_eone
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PostPosted: Sun Dec 28, 2008 2:57 am    Post subject: Fuel pump Reply with quote

This is why I love my South Wind Heater, it is mechanical.
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505-73Thing
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PostPosted: Sun Dec 28, 2008 6:51 pm    Post subject: Reply with quote

Never mind, just turned it on after driving a short distance and bingo - hot air.
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