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Spark plug gap for Propane 302?

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Old Jan 14, 2004 | 12:14 AM
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SAUKA
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Spark plug gap for Propane 302?

Does anybody know what my spark plug gap should be on my 1979 Ford PU that is on Propane. I know the gap has to be smaller but I"m not sure what the gap is.
 
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Old Jan 14, 2004 | 02:40 AM
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I have heard that you want to close down the gap by .2mm (.008") from the factory setting. Also, you may want to run a colder plug (one step down) if they look like they're overheating.
 
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Old Jan 14, 2004 | 10:43 AM
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With the high energy ingnitions in newer truck leave the gap stock. There is really no need to close the gap to increase voltage. Also it will shorten the amount of "time" the spark is in the cylinder and could lead to a miss under load. Do not go more than one range colder with out running it for a while on the new range. I have all ways left them stock. A MSD Blaster coil would be a benfit.
 
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