Sparkplug Question.

[Supaman]

I just took out my sparkplugs and sparkplugs 1-5 looks good and sparkplugs 6-8 looks like they were running lean. What can I do to make it even? What could this mean? Thanks

 

[Aryan15]

Pull the codes and do a cylinder balance test.

 

[Supaman]

Pulled codes got a 94 and 44, but that's to be expected since I did delete the smog system. Did the cylinder balance test 3 times and I got a code 90 which is system pass.

 

[7-UP BILL]

If you have stock fuel rails and pump, it is "the end of the line" so to speak. It's hard for the pump to get fuel to those last plugs, so they run slightly lean.

 

[gunmetal5.0]

What if he got a second 'pusher' pump partway down the line?