Change the spark plugs too while you are at it, with NGK BKR6EIX plugs (or BKR6E if you want to save money but these are the copper plugs and will not last as long as the iridium BKR6EIX).
changed out some spark plugs, shop here: http://autotech.com/passat/b6-3-6l-2006-2009/3-6l-vr6-ngk-spark-plug.html also I decided to get a new valve cover (comes with new gasket, bolts, bolt o-rings, and of course a new PCV oil separator that are prone to fail)
I'm pretty sure that modern Mazda's do do this, only not in the situation you're describing. They use it for their stop start system to save having to fit a beefier starter motor and what not, simply inject an extra dose of fuel and fire the spark plug to get the engine going again.
I used NGK Iridium.
I have a 12 GLI with 82k and just changed my plugs for the first time. Holy cow what a difference. It had been running a little rough and even made it seem like the clutch was slipping on hard acceleration between 3 and 4. I thought it was carbon buildup, but I just had that cleaned up at 60k. The new plugs make it run like new again.
I either use Delco or NGK. Never had a problem with either of them.
OEM plugs are good but NGK iridiums are just as good and cheaper. If your car is stock, which if memory served correctly it is, then use NGK BKR8EIX.
I just bought my old APR S3+ '03 Jetta back. It's been running these for 12 years. I seem to be fine w/ my AEBs and my BKR7e plugs.
i am using pfr7b. maybe coincidental but my 3000-6500 logs always run a few milliseconds faster. only problem with .028 are some few intermittent low rpm misfires.
My car started experiencing misfires after changing the sparkplugs. Never happened before. Now it gives me a code for random misfires and #4 in particular. Today is the second tome it happened after starting the car on a cold morning. Second time 2 weeks after changing spark plugs. Just after I start, when its still cold, and never during driving or idling when warmed up. Strange. Could it be the plugs. I am using the new NGK ones. NGK Part # 1675 Laser Platinum pre gapped. Didnt have a problem with this before. I think these a are one range colder than the previous ones I had in the car. Could that be the problem?
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