I have had 3 new plugs this week that failed work. They test fine out of the motor. 2 were in mowers that people have brought to me because they couldn't get their mower started and one I put in a Briggs while the owner was standing there. I'm thinking this must be some sort of record or is it just a sign of the way things are going. Worst part was one slasher I had fitted a PT on and put the new plug the owner had bought. Ran fine but the next day it wouldn't start. I drove to Werribee 2 hours each way to bring it home because I had no idea why it had stopped, all because of a stinking NGK spark plug. Sometimes I never learn.
NGK or any other brand nowadays is just hit and miss. Companies couldn't give a rats over what they're doing and are just living off their past reputation.
Sadly reputations mean nothing these days.
Cheers, BB.
I live a 24 Hour lifestyle, but every now and again I seem to fall asleep, well at least that's what my wife tells me.
And that is why I pay a max of a couple of dollars for spark plug, you have just as good a chance of them working as you do when you pay$7.50 for them. Once upon a time you got what you paid for but not anymore.
NGK on them Max, fake NGK plugs have been around for years and they are a very good copy, from memory the only way you could pick some of them was the slightly lighter yellow on the box the plug came in
Hi All, I've been using nothing but NGK plugs for a few years now and have never had a problem with them. I've tried using cheaper no name brand plugs and they were definitely hit and miss. As for price i was paying $20/box (10 plugs) for cheapies and pay $30/box for NGK through my local Repco dealer. Yes, $30, it took some negotiating but that's what i pay for BM6A or J19LM's. Champion plugs are marginally cheaper but i've lost confidence in them.
Just wait until get some CMR 10 mm series. I had them to fail out of the box, cause misfiring, and even had one that causing a 2 cycle to diesel. But normally I don't much in the line plug failures.
Now the NGK that I separated from the metal shell they have been marked below the crimp ring on the ceramic body. I would have not known except I was making some pressure/vacuum adapters for testing crankcases.
Bad plugs don't normally bother me, you expect them from time to time, but I have only looked at I think 4 mowers in the last week ( I only started looking at them last week post op because I was asked to see if I could get one going and that was a plug problem as well) and 3 of them suffered problems with brand new plugs not working, bit hard to believe.
That is something I have notice over the years that problems tend to come in groups as if they are manufacturing defects. Ten years not a single hydrostatic cooling fan problem and then 3 in a row this month. At least it not like the 50+ desktop calculators that I had to replace the CPU chips on due to an adding problem back in the early '80's.
So it is not hard to believe you had 3 new plugs to fail in short order.
