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Discussion Starter #1
I did the "Sixlitre" ignition upgrade years ago.
I even helped preach that idea when it first came out.
BUT.......




Years later I have horrible cold start problems under 25F outside.
I would take 10 minutes of cranking to get it to fire up.
I assumed it was my fuel tank problems, but the new tank didn't fix it.
So yesterday, I changed the plugs in the snow.

:shocked All 8 plugs had worn to over 0.075 gap :shocked

I set the gaps to 0.045 this time, she started first try this morning :rockon
 

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Premium Member
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Great to know, so at what interval should the plugs be checked/changed for best results...................................? :scratchhe


Thanks! :thumbup
 

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3,109 Posts
The twofitty I just got had the same problem. Plugs had worn to 0.065". One fouled due to flooding and would not clear. Reset the gaps, cleaned them up (until I get new ones installed), no more problem :thumbup
 

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OUT OF BUSINESS / M.I.A.
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Discussion Starter #4
I would sugest checking them every 2 years if you like the widder gap and see cold weather.
 

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Great to know, so at what interval should the plugs be checked/changed for best results...................................? :scratchhe


Thanks! :thumbup
Check them once a year, every two years at the most. Depending on how you drive, they may need replacement every 25,000 miles, but you can get 50k to 75k with good maintenance, an easy throttle foot, and mainly highway driving. My old Windstar had 135k on the original plugs and it still ran well.

Fireguy beat me to it...
 

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That is one problem with going with the bigger gap for sure!

It helps, just got to keep a eye on them. I set the ones on my new engine at .045 for now.
 

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Former owner of Shadofax
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17,025 Posts
I did the "Sixlitre" ignition upgrade years ago.
I even helped preach that idea when it first came out.
BUT.......




Years later I have horrible cold start problems under 25F outside.
I would take 10 minutes of cranking to get it to fire up.
I assumed it was my fuel tank problems, but the new tank didn't fix it.
So yesterday, I changed the plugs in the snow.

:shocked All 8 plugs had worn to over 0.075 gap :shocked

I set the gaps to 0.045 this time, she started first try this morning :rockon
were you using standard plugs Ryan? The Platinum tipped ones will help prolong plug interval between changes.
 

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405 Posts
I would stick with plug replacement every 30k. Platinum plugs can generally go twice that in my experience.
 

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I use the cheap autolite plugs. it is easier to replace them every year or so, than worrying about big dollar plugs.
 

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7 Posts
i have had my bronco almost a year and have never checked my plugs!! i guess i probably should do that while im waiting for the altenator i ordered from you. What should the spark plug gap be on a 1996 xl be?
 

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I use the cheap autolite plugs. it is easier to replace them every year or so, than worrying about big dollar plugs.
:stupid

I dont put too many miles on so I just swap them out every two years and call it good. Only check them if I suspect something.
 
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