Replace the spark plug with a Bosch. See if it will start and run.
Pros: easy to replace
Owner reviews for spark plug
Manufacturers
Comparisons
Denso itv20 (5339) for stock/mostly stock. ITV22 (5340) step colder if more mods. I have only used itv22 since 2015.
Pros: good for stock
Cons: only for stock
Part number: 5339
120k miles on my 2015 a3 with a stage 1 tune. I did timing belt, tensioner, and water pump around 100k miles. Costed me like $1k. Also did spark plugs and a new battery, which was another $600.
Vehicle:
Audi A3
Mileage: 120000 km
If you’re asking about brands, I always go NGK. They’re definitely my preference. They have a coating on the threads and don’t require grease when you install. And they come pre gapped.
Pros: pre gapped, no grease needed
I've ran these for a few years stage 2 e85, with absolutely no issue at all. The last year and a half I've been running a bigger turbo, powermax 2260 and have had zero issues
Pros: no issues at all
Been running them for the last year on EQT stg 1 91 and e30 with no issue.
Pros: no issue
NGK !!!
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.
Pros: ran well for days
Cons: not running smoothly now
Vehicle:
Volkswagen
Installed new Bosch Plugs (WR7DC+), Bosch Distributor Cap, and Rotor. Now the car seems to be having a weird idle sitting as stop lights, and the engine almost shut off while I was backing into the garage. Also she seems like its having a harder time sterting up as well.
Cons: weird idle, engine shut off
Part number: WR7DC+
Plugs off if Amazon are fake, and they do some weird shit. We had a car in the shop that would shut down at random was due to fake plugs.
Pros: car would shut down
Cons: plugs are fake
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