Owner reviews for spark plug

Over the years I’ve found that the factory recommended spark plugs typically work best. There are exceptions, but my ‘95 5.7 recently got some plain Jane ACDelco plugs and it is running great.

I like NGK’s. No longer have my E28 but in my 944 i still run NGK’s.

I suggest buying a known high quality replacement, not being picky about the exact spec, and seeing if that makes a difference. At under $5 it's a minimal cost and effort. Based on the what this engine was likely copied from, I would pick a NGK BPR4ES or BPR5ES from a vendor that doesn't have a reputation for NGK counterfeits.

I removed the Champion plug and replaced it with an NGK and on the first pull it ran.

I use NGK Iridium's in my generators. People say I'm nuts for spending the 10.00 for one, but I never have problems starting on gas or propane which is what I use with Iridium's, and plus you'll probably never have to replace it either.

I just replaced the stock plug in my Champion inverter with a NGK and it runs significantly better. No more random misfires.

I threw the nasty plug away, installed the NGK plug and it now starts on the first pull and runs smoothly.

Ja tive problema com velas bosch. NGK é melhor.

That's better than the Motorcraft plugs I received from Rockauto. They were bouncing around (no longer in their original little boxes) in a large shipping box with 2 sets of brake pads.

Autolites gotta be the worst fkn plugs on the market rn.