Thread: When to change spark plugs, engine hot or cold?
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Old 06-15-2001, 07:26 PM
hancheng hancheng is offline
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Join Date: May 1999
Location: Diamond Bar, CA
Posts: 73
Hi,

It's about time to replace spark plugs on my 94 C280. Is there any preference to replace them while engine is hot (just like engine oil) or cold or it doesn't matter? Thanks.
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Harry (94 C280)
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