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Check the plug gap before installing new plugs

1420 Views 9 Replies 9 Participants Last post by  Blasirl
Just thought I would let everyone know just in case. Check the plug gap before installing new plugs. I bought 4 new AC Delco plugs for my 2014 1.4L that were supposed to be pre-gapped at 0.028 They were not! All of them were wrong ranging from 0.022 to 0.024

A simple $1.50 tool was all I needed to confirm it and fix it.

Furthermore when I removed the stock plugs from the factory (car has 39800 miles) the gap was wrong as well. The car is running much better with the plugs gaped correctly. I wonder if the assembly line just slammed them in there without caring
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Just thought I would let everyone know just in case. Check the plug gap before installing new plugs. I bought 4 new AC Delco plugs for my 2014 1.4L that were supposed to be pre-gapped at 0.028 They were not! All of them were wrong ranging from 0.022 to 0.024

A simple $1.50 tool was all I needed to confirm it and fix it.

Furthermore when I removed the stock plugs from the factory (car has 39800 miles) the gap was wrong as well. The car is running much better with the plugs gaped...
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Just thought I would let everyone know just in case. Check the plug gap before installing new plugs. I bought 4 new AC Delco plugs for my 2014 1.4L that were supposed to be pre-gapped at 0.028 They were not! All of them were wrong ranging from 0.022 to 0.024

A simple $1.50 tool was all I needed to confirm it and fix it.

Furthermore when I removed the stock plugs from the factory (car has 39800 miles) the gap was wrong as well. The car is running much better with the plugs gaped correctly. I wonder if the assembly line just slammed them in there without caring
The workers on the line have seconds to do their job, repeating it for 8hrs straight. They do not have time to check gaps before installing them. Its ultimately the responsibility of the supplier to ensure the parts they supply, meet specifications

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The spark plug supplier is probably required to supply plugs to the engine plant with the correct gap.

They have failed miserably on this! There are plenty of threads on this forum to attest to that!
 

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Just thought I would let everyone know just in case. Check the plug gap before installing new plugs. I bought 4 new AC Delco plugs for my 2014 1.4L that were supposed to be pre-gapped at 0.028 They were not! All of them were wrong ranging from 0.022 to 0.024

A simple $1.50 tool was all I needed to confirm it and fix it.

Furthermore when I removed the stock plugs from the factory (car has 39800 miles) the gap was wrong as well. The car is running much better with the plugs gaped correctly. I wonder if the assembly line just slammed them in there without caring
You can't expect plugs to be gapped correctly after 40,ooo miles. Electrodes wear down. Gaps get wider.

It's called wear and tear.
 

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Plug gaps are checked and adjusted prior to install on everything that I have. I have had too many that were supposed to be good out of the box per the manufacturer that were not where they were supposed to be.
 

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Same thing for me with those plugs. I changed mine a couple of weeks ago and the service guy even wrote .028 gap on the box and they were pre gapped and I just need to install. Funny thing is the service guy never checked the gap himself and they all came out at .023 to .024....

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