vs
Spark plug Autolite or BERU
i just changed mine out.. i put in the autolite 3923's ($4 for the set) . they seem to work fine. one thing to watch out for though - they were all gapped differently out of the package. be sure to measure the gap before putting them in, just in case. (the gap should be .028)
Pros: seem to work fine
Cons: gapped differently
Vehicle:
Volkswagen Jetta
Part number: 3923
I would call New Dimensions... but I decided to go with the Beru Ultra-X. These have 4 nodes instead of just 1 on the head of the spark plug. They are awesome!
Pros: awesome, 4 nodes
Beru Silverstone all the way....Spendy, but worth it, totally. I have taken the pplugs out a couple of times since I put them in a little more than a year ago, and have found very clean plugs, no fouling at all. the electrodes were in the same shape as when I bought them, hardly worn down at all.
Pros: very clean plugs, no fouling, hardly worn
Cons: Spendy, but worth it
Seems like you did everything except swap out a $2 spark plug. I had a misfire on cylinder #1 first then cylinders #3 and #4 until I went out and bought 4 new Autolite 3923 spark plugs and put them in and BINGO no more problems the car is running strong and not throwing any codes.
Pros: car running strong, no codes
Vehicle:
Volkswagen
Part number: 3923
i've had the beru ultra x's in for about 8K...no problems...no noticeable improvement either...starts the same (good), runs smooth...no complaints, but no better than stock...
Pros: runs smooth, no problems
Cons: no improvement
Mileage: 8000 km
I've gotten autolites a few times for some domestic cars and they've been 0.005\" - 0.010\" off seemingly across the board, compared to what the box said they should be. And I wasted a day hunting down a misfire that turned out to be a bad spark plug out of the box.
Cons: incorrect gap, bad plug out of box, misfire
Don't go with Autolite XP iridium. I had on my Jetta and one of the tips basically melted after 25k. They suck.
Cons: tips melted, poor quality
Vehicle:
Volkswagen Jetta
Mileage: 25000 km
I took a peak at mine the other week and the gap was HUGE so gapped them down to .035 and now cold starts are ROUGH. The pugs in there suck, anyway - old autlites.
Cons: rough cold starts, poor performance
After changing the plugs from OEM's to Autolite 3923's, the coil packs started popping up. I've read that the Autolites are smaller than the OEM's, so they don't hold on as tight...and then somebody else said this is bogus and they're both the same. Whatever the reason, the coil packs on my car do not like the Autolites.
Cons: coil packs started popping
Just installed my autolites 3922 (one range colder than stock 3923) they were gapped to 0.025" with this gap I'm having some problems on hot startups, colds ones are ok. I'll regap them tomorrow and see if it gets better, maybe I'm having some loss in performace as well due the small gap....
Pros: cold startups ok
Cons: problems on hot startups, potential performance loss
Part number: 3922
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