Spark plugs

[buck91]

Any suggestions on double platinum vs iridium spark plugs for our 5.3L's? I can't find the OE recommendation in the PDF owners manual I have nor the AutoMATE online reference through my local library...

 

[swathdiver]

ACDelco lists them all as options and the Iridium 41-110 were OE.

 

[intheburbs]

I put Denso Iridiums in my 5.3 Suburban. After 75k miles, the engine was running like shit, and when I removed them, the electrodes were seriously deteriorated. Not impressed.

 

[TahoeLTZ2007]

I have a 2013 tahoe ltz 5.3. With 83,000 miles with an idle miss.
Mechanic wants to renew plugs and wires with NGK.
Any thoughts
Anyone know the ngk #
Thanks

 

[97audia4]

I have a 2013 tahoe ltz 5.3. With 83,000 miles with an idle miss.
Mechanic wants to renew plugs and wires with NGK.
Any thoughts
Anyone know the ngk #
Thanks

Have him call the dealer and get the AC Delco OEM parts.

 

[TahoeLTZ2007]

Thats what I was thinking, but he does this daily.
I just supply the parts.

 

[swathdiver]

I have a 2013 tahoe ltz 5.3. With 83,000 miles with an idle miss.
Mechanic wants to renew plugs and wires with NGK.
Any thoughts
Anyone know the ngk #
Thanks

My thoughts are did you pull the plugs and check their condition and gap? Inspect the wires? The best plugs are stock while some run aftermarket wires without issue. A mechanic's scan tool should be able to find out why and where it's missing.

 

[TahoeLTZ2007]

My thoughts are did you pull the plugs and check their condition and gap? Inspect the wires? The best plugs are stock while some run aftermarket wires without issue. A mechanic's scan tool should be able to find out why and where it's missing.

GM maintenance schedule says 97,500 miles, I was just going to do it early. The miss is just slight on idle,no lights,runs great.
I have had 5 tahoes or Denalis, just what I’ve done in the past.
My question was mainly about the choice of NGK sparkplugs over OEM Delco.

 

[swathdiver]

GM maintenance schedule says 97,500 miles, I was just going to do it early. The miss is just slight on idle,no lights,runs great.
I have had 5 tahoes or Denalis, just what I’ve done in the past.
My question was mainly about the choice of NGK sparkplugs over OEM Delco.

Ok, well, you got my two cents. Let's see who else chimes in. I know there are guys here that run NGKs. Thirty years ago I ran them in my Buicks. They were good for 5 horsepower but cost us 2 mpg. Sometimes I'd swap them in at the drags but after a while just stayed with the OE plugs.

 

[Derick]

I always heard them NGKs go in them, ***-o-neese ve-hicles.