Spark plug Bosch or OEM Honda

the spark plug is less than 10k km old (bosch) so I initially did not change it. Decided to change it anyway to original mercedes (turns out made my NGK) bam emission passed, LTFT now hovers at 5-8%.

I've changed my spark plugs three times, always with the Bosch Iridium, never had any problems. Pre-gapped, takes me about 30 minutes from start to finish. Lasts me about 90,000 miles.

Eu tenho dois Honda Jazz. As manutenções são super baratas e os carros nunca avariam. Melhores carros de sempre... Até chegar à altura de trocar as velas... Sim, são a 40 euros cada. Preço normal.

Using the muzzler has stopped mine needing the spark plugs changed / having a cylinder go out every 6 weeks.

The new ignition switch is in. The spark plug wires are Bosch copper and now have the Bosch super 3 ground electrode plugs installed. So with a fresh ignition switch that eliminated the odd electrical changes we were seeing in the dash lights, now stronger cranking and it does run better.

I'm still not entirely convinced that it is weak or under ignition versus over fueling. Either way it just seems like it's having a hard time burning the fuel that it is getting. I still can't help but wonder about the Bosch Platinum 2s. I have had good luck with them before my Mark 2 GTI and the car did run well with them for a good 10 days before all of this started.

I went with OE ignition coils and bosch spark plugs and the misfire went away for a couple days but came back on my drive to school.

Ever since Bosch moved spark plug production to Russia, the quality has been sketchy.

I replaced my sparkplugs, and everything went smoothly except for the front plug on the driver's side. All the other spark plugs screwed in with little to no need for a socket wrench - except for tightening at the end.

This one plug seems to be stuck halfway down the middle of the thread and won't go deeper unless I really torque it. When I took the new spark plug out, I noticed that the tip was bent with the spark gap being much smaller than the other new piece.

Neither, I’ve seen Bosch plugs fall apart and I wouldn’t trust autolite on my lawnmower.