Rate my sparkplugs

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Old Guy Bill

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It would be really easy to run a compression test while the plugs are out…
 

13matsc

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It would be really easy to run a compression test while the plugs are out…

Check my other picture. About 180 psi on all eight.
Get it out on a loooong straight stretch and floor the GO pedal. Keep it down until it comes out of "passing gear".

Sometimes I do this, just for fun….
 

13matsc

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But does it have a positive effect on the engine/plugs?
 

Snoots

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I've always thought so. My engine seemed to have a crisper 'get up and go' to it afterwards.
 

Sad Sack

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Clean the plugs, re-gap or get new ones and see if issue remains the same. More than likely you'll need some sort of head work. If compression is overly high you could have lots of carbon buildup and may need to "dribble" some water or tranny fluid down the carb to break it up but let others chime in with their opinions. Oil on plugs is never good. All plugs should be tannish to tannish white on a good running engine. If oil rings were bad then your smoke would be a little more constant.
 

Sad Sack

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Sad Sack

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@Sad Sack just funnin, from one OLD Husker to another :)
I love it!
Push rod guides, hahaha I can't stop chuckling about that, had lots of thoughts in my head and things got a wee bit scrambled. SBC 101 is on my list of classes to retake.
Go Huskers!
 

AuroraGirl

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But does it have a positive effect on the engine/plugs?
yes, carbon can build up on the plugs and chamber that isnt yet solidified into hard to remove coke (carbon) , this helps get the RPM and temperature up to blast it off

If you drive very slowly and gently in the city for years, taking a modern vehicle with a sport mode on it for example and doing this will give you a plume of black smoke out of the tailpipe
 

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