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Antique Gas Engine Discussion

Running on LP


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  #1  
Old 01-14-2005, 10:20:20 PM
Justin Justin is offline
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Default Running on LP

I have a FB zd that I am trying to run on lp. The carb was broke so I cut it off flat and JB welded a 3/8 lp fitting in it. I also took out the butterfly valve since the governer weights are broke, and jb welded up those holes. Now the problem is I can't get it to run. It will fire usually 2 or 3 time and quit. I can crank it over again and it will do the same thing every time. The gasket between the carb and block has a small leak could this be my problem?? No gas appears to leak out when running with a small amout of gas comming out, but it will leak if I turn the gas up to high. I have a high pressure regulator(21.8 psi) with a shut off valve after it to control the flow. I have used a low pressure secundary regulator and had the same problem. Any ideas??
Justin
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Old 01-14-2005, 11:00:44 PM
hit-n-miss166922 hit-n-miss166922 is offline
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Default Re: Running on LP

Hello from Wisconsin!!!
My opinions!!!! You should have a secondary regulator to drop the gas pressure to about 11 to 14 inches water collom, what a common gas grill regulator does. Also an on demand regulator. This works like a needle and float in a gasoline carb, shutting off the fuel flow when not needed. I think that you have so much gas that you are in effect flooding the engine. Thats why it starts, fires once or twice then stops. Hope this helps.
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Old 01-14-2005, 11:57:16 PM
onlineyes onlineyes is offline
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Default Re: Running on LP

check here. this guy is great http://www.propanecarbs.com/
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Old 01-15-2005, 12:41:17 AM
Harry Harry is offline
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Default Re: Running on LP

Also check this thread:

http://www.smokstak.com/forum/showth...hlight=propane
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