Leading or trailing plug difference
#1
Sprout
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Join Date: Jun 2008
Location: Central PA
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Leading or trailing plug difference
Hello - Can anyone tell me the difference between the leading and trailing plugs? And - how often do they tend to go bad? Thanks! Sprout
#2
Gidday, Dont get them mixed up .The Trailling plug has a hotter spark than the Lead one.If you look on the block beside the plugs you will see it marked "T" or
"L" to identify them, also the lead spark plug is longer than the trailling plug so dont put the wrong sort in ,otherwize 'CRUNCH'
"L" to identify them, also the lead spark plug is longer than the trailling plug so dont put the wrong sort in ,otherwize 'CRUNCH'
#3
Paul.
#4
Gidday, Dont get them mixed up .The Trailling plug has a hotter spark than the Lead one.If you look on the block beside the plugs you will see it marked "T" or
"L" to identify them, also the lead spark plug is longer than the trailling plug so dont put the wrong sort in ,otherwize 'CRUNCH'
"L" to identify them, also the lead spark plug is longer than the trailling plug so dont put the wrong sort in ,otherwize 'CRUNCH'
#6
I replaced my spark plugs and found that all my spark plugs were BUR9EQP trailing plugs. I replaced all of them and used BUR7EQP's on the lead spark plugs and the the BUR9EQP's on top. My engine is stock, so I don't know why the previous owner used 9's for all plugs... Can this hurt the engine in some way?
Last edited by lameyofth; 08-14-2022 at 05:19 PM.
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