well I got around to doing my plugs
125,km on the car orig plugs ngk's looked ok except well worn down and th gap had grown too .45 to .53!!!
4 different plugs there sorry about quality only had my iphone handy
125,km on the car orig plugs ngk's looked ok except well worn down and th gap had grown too .45 to .53!!!
4 different plugs there sorry about quality only had my iphone handy
Glyn M Ruck
Super Moderator
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Sep 20, 2024
Yep - those have seen better days.
Super Moderator
Quote:
That’s substantial growth from new (.039”/1mm) after only ~77,500 miles.Originally Posted by contact148
..well worn down and the gap had grown too .45 to .53!!!
My M112’s OE NGK IFR6D10's gap had increased a scant .002”-.004” by 50,000.
Serves as testament to the strength of our ignition system that you weren’t suffering misfires.
During the leaded fuel and pre-platinum/iridium plug era, .001” erosion per 1000 miles was considered normal. The Charles Kettering-style points and condenser were hard pressed to bridge the ever-increasing gap. Even fitting a Bosch ‘blue’ coil to a former Karmann Ghia did little to extend the NGK BP6ES’ useful service life.
Owing to documented air quality and fuel consumption improvement from doing so,
my trusty MSD 6-equipped GMC receives a fresh set of 99¢ AC CR43s annually.
yup not a single missfire started up fine till this winter it needed a few cranks (3-5 engine cranks before it started where before it was 1 or 2)
Glyn M Ruck
Super Moderator
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Sep 20, 2024
Lead erosion of spark plug electrodes was legendary!!!
Quote:
man you guys are old.......Originally Posted by Glyn M Ruck
Lead erosion of spark plug electrodes was legendary!!!
least im not the only one who remembers leaded gas
I dont recall lead wear of plugs thru
I have a 1946 ****** jeep and add the lead additive and my plugs are fine after 3 years
Glyn M Ruck
Super Moderator
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Sep 20, 2024
It's a 1946 Jeep! - Are you actually adding lead or a lead replacement additive? Probably a lead replacement additive. Raw TEL & TML are awful substances especially neat & need to be handled with due care.
lead replacement additive
i really dont have much risk burning out the valve seats with my huge 4 cylinder 60hp engine
so i only add it every few tanks I only put about 200 miles a year on it as a top speed of 60mph no turn signals or seatbelts and a single brake light make city driving a pain
i really dont have much risk burning out the valve seats with my huge 4 cylinder 60hp engine
so i only add it every few tanks I only put about 200 miles a year on it as a top speed of 60mph no turn signals or seatbelts and a single brake light make city driving a pain
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Glyn M Ruck
Super Moderator
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Sep 20, 2024
LRA won't damage plugs. Lead did.
ahh well that answers that then!
Banned
Quote:
Originally Posted by contact148
yup not a single missfire started up fine till this winter it needed a few cranks (3-5 engine cranks before it started where before it was 1 or 2)
hmm My car has always started on the first flip of the key.. Started to act up when the battery was failing
Super Member
Guess I should pull out the records and see if I've ever replaced plugs. I don't remember doing it, and at 141,500 now, I might want to think about it...
But then again...
But then again...
