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LS1 sparkplugs

Johno50

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I have a vy2 clubsport manual done 105000 kms.....it still has the original sparkplugs in it ....was wondering what is the usual mileage to replace the plugs?.I have a rlacement set of AC Delco Iridium plugs to go in it.

Cheers.johno50
 

Atom555

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Depends on many factors and plug types.

Easiest way is the remove a plug and have a look at the colour on the electrode.

The different colours will represent what is happening on in the inside.

Easy to just google spark plug colours and you’ll find all the answers, example is if it is a dark black sooty colour - it could mean it is running too rich. Etc. etc

Good luck
 
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