Volvo RWD 140-160 Forum

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Reading spark plugs 140-160 1974

posted by  linc on  Wed Apr 13 09:30 CST 2005
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last visit: Tue Mar 18 21:09 CST 2014
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Aplogies if this is a duplicate response. I didn't sign in the last time...

The manual calls for Bosch W200 T35 and I'm running Bosch RO 271 type plugs. Can't say if they are interchangable.

From Phil's analysis I'd say I'm in satisfactory shape then. The center ceramic electrodes are a light brown, top to bottom. Nbr 4 cyclinder is a little darker, almost a ruddy color. And I have a white ring around the top, not quite 1mm all the way around.

Thanks for the method of evaluating mixture / timing conditions, Phil.






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New K-Jet running rich? [140-160][1974]
posted by  linc  on Tue Apr 12 19:12 CST 2005 >


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