After new spark plugs my first start died???

I used denso iridium.
35000 miles.
First start died. ??

 

How about the second start?

Or any starts after that?

If it only happened that once I wouldn't worry about it. Non issue.

 

^^^ What he said. Mine always does that exact same thing after I pull the battery terminals too.

 

Correct, first start after battery disconnect always dies. It's like the onboard computer is resetting.

No biggie

 

Thank u very much guys. Now I have a peace of mind.

 

My truck did it again today. Died after start. once. And my gas seems to be going down faster.

 

Iridium plugs can effect your mpg. These engines like copper plugs.

 

Yup, unless your super/turbocharged or are having issues with spark knock I hear it's best to stay with the copper plugs but to each their own

 

Did you remove the intake tube? Make sure it's securely fitted. Also check anything you disturbed on the driver's side (hoses, VSV valve electrical plug).

What P/N Denso plug did you use?

 

Did you gap them properly?

 

More importantly, did @12345 damage the thin iridium electrode while gapping them?

 

Clean throttle body , remove battery cables , and try again

 

You're not supposed to set the gap on iridium plugs due to the brittle nature of iridium. They come pre-gapped and if they are not correct you should take them back for a replacement.

 

Got them from O'Riley and they told me to set it at .044 but I just did it at .042 /.043. Lol my first time doing this. Did not come pre gapped. Going to take them out and re gap them. Any tips? I'm crossing my finger's lol

 

OP, what gapper did you use? because there is a proper tool for gapping iridium plugs. If you used a coin like gapper that goes in between the electrode and tip, then you could've possibly damaged them.

 

Yup I prob did... I have the coin style. Should I get new plugs. FCK me.

 

oh man, yeah I would get new ones. this is what I followed when I bought ngk iridiums. https://www.youtube.com/watch?v=lk70oyUEftY but I'm sure if you get copper plugs you can use the coin type gapper.

 

@TRIPPIN thanks. So if I check them and the electrodes is not ruined should I still get new plugs.

 

make sure the electrode and tip (especially the tip) is not damaged. if any of those 2 are damaged (even slightly), they recommend to chuck them and replace. Reason I know this....from experience

 

Before attempting to gap any DENSO Iridium Power spark plug, please review the specification chart in the front of this catalog to verify the factory-preset gap. In most cases your Iridium Power plugs do not need to be gapped. Even with small variations in the factory set gap the ultra-efficient firing power design will compensate for those small variations. Should you decide to re-gap your Iridium Power plug, use extreme caution as improper gapping may damage or destroy the Iridium center electrode or porcelain center.

To increase the gap size:

• Step 1: Use needle nose pliers or spark plug gapping tool to bend the ground strap up to the desired height. DO NOT LET THE PLIERS OR GAPPING TOOL TOUCH THE IRIDIUM CENTER ELECTRODE OR PORCELAIN.
• Step 2: Re-check the gap with a calibrated gapping tool.

To decrease the gap size:

• Step 1: Use the same method as above, however bend the ground strap down to the desired height. DO NOT LET THE PLIERS OR GAPPING TOOL TOUCH THE IRIDIUM CENTER ELECTRODE OR PORCELAIN.
• Step 2: Re-check the gap with a calibrated gapping tool. WARNING: Failure to follow these directions may permanently damage the spark plug. Note: Never use a round gapping tool to check the gap or to increase or decrease the gap setting.



It is not worth the effort and they will swap out a plug that is improperly gapped. I have never had to regap an Iridium Spark plug.