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Spark plug type

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Randy G.

02-13-2006 10:54:13

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I need to know which brand and size of spark plug to use in my 1940 H. The manual is no help. Your help is very welcome. Thanks, Randy

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Dellbertt

02-14-2006 17:09:41

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Re: Spark plug type in reply to Randy G., 02-13-2006 10:54:13

I have a trash can reserved for Champion plugs.
I switched to Delco C-87 and no more fouling.

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Brownie 45

02-14-2006 04:57:00

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Re: Spark plug type in reply to Randy G., 02-13-2006 10:54:13

Champion plugs are not what they used to be. Seems that since they went to C suffix plugs,[copper], problems have cropped up. Last week, I was working on a Hercules generator set. Had good spark on 3 cylinders & nothing on the other one. Took the cap off the mag, suspecting a bad cap. Looked good, cranked the engine over, & had a good spark from the plug wire. Pulled the plug out[new plug] & after much testing, found that it had an internal short somewhere in the insulator[ wouldn't spark at the gap]. It was a J8C. We've been having better luck with Autolite plugs. My two cents worth.

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old

02-13-2006 15:30:00

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Re: Spark plug type in reply to Randy G., 02-13-2006 10:54:13

or Autolite 386

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sammy the RED

02-13-2006 10:55:22

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Re: Spark plug type in reply to Randy G., 02-13-2006 10:54:13

Champion D-21

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