Running lean

[saxplayer07]

I own an '01 Silverado 1500 Z71 with a 5.3l. And I recently changed my spark plugs, from autolites to champions. And it's running lean,how do I fix it?

[BlackZ71Silverado]

Why do you think it's running lean?

Is it tuned, did you run a datalog to be able to read the fuel tables?

Was it running lean before the new plugs?

Did you use the correct spark plugs and gap them properly when you changed them?

 

 

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[txab]

What codes do you have?

[saxplayer07]

No codes that I know off, I recently changed spark plugs from champions to acdelco. And the Champs were white as snow

 

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[BlackZ71Silverado]

Sounds like you used too hot of a plug for your truck with the Champions.

The AcDelco plugs should take care of that issue.

 

 

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[saxplayer07]

Sounds like you used too hot of a plug for your truck with the Champions.

The AcDelco plugs should take care of that issue.

 

 

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Ok, thank you!

 

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