Engine sputtering / stuttering at 2500 rpm?

[phattyduck]

Didn't know that. The NGKs are single prong.

Neither the plugs or the wires should've needed changing based upon mileage. I'm just glad it was not a more expensive issue.

The *correct* NGK plugs are dual electrode. From the factory, one bank got Denso plugs and one bank got NGK plugs. The correct model from either manufacturer will work well. Sounds like it was just bad (wrong) plugs.

-Charlie

 

[ReconcileUs]

Update May 2022

Quick update, hopefully the final one regarding this issue.

I barely drive my truck, since like over a year ago, before gas prices even rose. It's been roughly 2,900 miles added since I changed the spark plugs.

Well, today I experienced some light stuttering / studdering while making a quick run, while slowing down coming to a stop and idling at a light. Barely noticeable after acceleration, but noticeable.

I'm going to change the plugs again, to install dual electrode plugs.

For reference, the correct part numbers for the dual electrode spark plugs are

Denso K16TR11
-Or-
NGK BKR5EKB-11 (3967)

I'm using NGK, if I don't post again in this thread then all is well.

If anyone watches TheCarCareNut on YouTube, he is local to me. I'm going to have him inspect the truck as soon as he is able, expected sometime in June. I'm not confident in my engine anymore. Maybe I messed it up by running single electrodes for 40k miles.

 

[gamefreakgc]

Quick update, hopefully the final one regarding this issue.

I barely drive my truck, since like over a year ago, before gas prices even rose. It's been roughly 2,900 miles added since I changed the spark plugs.

Well, today I experienced some light stuttering / studdering while making a quick run, while slowing down coming to a stop and idling at a light. Barely noticeable after acceleration, but noticeable.

I'm going to change the plugs again, to install dual electrode plugs.

For reference, the correct part numbers for the dual electrode spark plugs are

Denso K16TR11
-Or-
NGK BKR5EKB-11 (3967)

I'm using NGK, if I don't post again in this thread then all is well.

If anyone watches TheCarCareNut on YouTube, he is local to me. I'm going to have him inspect the truck as soon as he is able, expected sometime in June. I'm not confident in my engine anymore. Maybe I messed it up by running single electrodes for 40k miles.

Unlikely that you messed anything up permanently, I've been running single electrode spark plugs in my engine for 8 years. They only last about 25K miles though as it's only got one ground instead of 2 and the waste spark system fires them twice in every combustion cycle.

 

[ReconcileUs]

Unlikely that you messed anything up permanently, I've been running single electrode spark plugs in my engine for 8 years. They only last about 25K miles though as it's only got one ground instead of 2 and the waste spark system fires them twice in every combustion cycle.

Well if they work fine then that doesn't really reassure me because doesn't that mean there's another problem other than the spark plugs that would be causing my issues?

I installed the dual electrode NGK's today. The plugs I removed looked pretty bad, but don't really have the experience to say for sure how 2,900 mile plugs are supposed to look. I'm wondering if my engine is burning oil badly.

Truck is scheduled to be inspected by TheCarCareNut this week.

 

[gamefreakgc]

Well if they work fine then that doesn't really reassure me because doesn't that mean there's another problem other than the spark plugs that would be causing my issues?

I installed the dual electrode NGK's today. The plugs I removed looked pretty bad, but don't really have the experience to say for sure how 2,900 mile plugs are supposed to look. I'm wondering if my engine is burning oil badly.

Truck is scheduled to be inspected by TheCarCareNut this week.

If you can post a photo of the old plugs, specifically a close up of the electrodes (can be all in one photo) the spark plug palm readers on here can tell you your engine's future.

 

[phattyduck]

I installed the dual electrode NGK's today. The plugs I removed looked pretty bad, but don't really have the experience to say for sure how 2,900 mile plugs are supposed to look. I'm wondering if my engine is burning oil badly.

This is what mine looks like at (I think) 60k miles on the plugs and 270k on the engine:

Worn (expected) electrodes, minor tan build-up, minimal oil staining on the threads, normal coronal discharge staining on upper ceramic.

-Charlie