Read my Plugs

[RS23VOA]

Guys,
Whats my prognosis? Fuel injected. Its from my Ford truck that i use to pick up my mopar parts so cut me a break! 89, 300, 5sp.

 

[RustyRatRod]

What are we lookin at? Did you just yank um out? You really cannot read a plug or the mixture without a full throttle run and then immediately remove and look at them. Is that what we're lookin at? If not, then whatever anybody says will be wrong.

 

[RS23VOA]

I just pulled them and replaced them. They always look like that when i replace them. The truck runs like crap, literally.

 

[RustyRatRod]

They got some kinda deposit thing goin on. They don't look too rich. Are you sure you're runnin the right heat range?

 

[daredevil]

here you read em.http://www.mastercams.co.za/checking-fuel-distributions-by-spark-plug-reading.html

 

[bigmanjbmopar]

The gap on those are supposed to be .044 are you sure that is what you are gaping them and not .035? and try a motorcraft plug not auto lite it looks like too hot of a spark from the ecm.

 

[moparcrazy]

Looks like its too lean to Me, check fuel line pressure and fuel filter,

 

[Ron 73]

This picture showing the different spark plug conditions is one ive had hear a long time, its one that was in my Haynes Manuel but pretty close to the one in daredevels link. and a good one to keep around to share or compare.

 

[RS23VOA]

I have used different brands of plugs and they all do the same. I have changed the fuel filter several times and replaced the EGR valve. I set the plug gap at .044. New plug wires. What do you think about clogged injectors?