Did Spark Plugs

[MountainManDan]

Hey I'm always Trying to be Very Clean when I do Plugs - as - I have seem all carbon or Grit or Debris that somehow Finds
it's way Down around Spark Plugs . . so VACUUM

Generally will Always wait for Plug Change - even If Do - Wait till Oil Needs Changing . .

I Use a Nickle Base Grease just Dab in center - biased - Toward Top . .

I Always try to Vacuum If Possible - or - Air Pressure after 1/2 Backed Out - Vac is Best ..

 

[MountainManDan]

15K Checking Plugs Burn :

66K

Note Marks on Insulator & Tips

What I have come to Note on Many Models of Cars & Trucks - 1 Thing that Owners Might Forget or
Just Quietly Fall Asleep on are Coils & Coil Packs . .


Like back in Day when cars all came with Lousy Brakes , Shocks, Wiper Blades ..

Coil Packs Lasted 150K ~ This Is NO Longer Case ~ Been an On Going Issue for some Time Now ..

Many have Not Woken Up to Very Slow Degrading of Coil Packs

What Happens is Super Slow Motion - Weaker Coil - leads to More Fuel in Oil , More Carbon Build Up
Less MPG slightly - so - Oily Carbon Deposits End up in Cat or Cylinder Wall - Piston Ring Interface . .

Rings could even Stick

I've Seen Fires Inside Catalytic convertors , Seen LSPI , Early Fuel Dilution = Why ~ Spark just Isn't Hot & Large & Fast ..

It becomes Weak , Slow Eff5 Drops way off ..

Changed out Coil Packs at 67K & 99K . . Both Perked right up & Better MPG ..

 

[The Critic]

What Happens is Super Slow Motion - Weaker Coil - leads to More Fuel in Oil , More Carbon Build Up
Less MPG slightly - so - Oily Carbon Deposits End up in Cat or Cylinder Wall - Piston Ring Interface . .

Rings could even Stick

I've Seen Fires Inside Catalytic convertors , Seen LSPI , Early Fuel Dilution = Why ~ Spark just Isn't Hot & Large & Fast ..

It becomes Weak , Slow Eff5 Drops way off ..

Changed out Coil Packs at 67K & 99K . . Both Perked right up & Better MPG ..

Old wives tale. If there was a legitimate ignition issue, your theory can be validated with information from the misfire counters and a check engine light.

 

[KGMtech]

As spark plug gap gets larger, the coils do have harder work to fire the plugs, but if you replace the plugs, the coils go back to happytime.

YMMV.

 

[MountainManDan]

NO - Coil Packs Just do Not Perform as Designed as Cost of Copper Windings Soars ..
Vendors get Cheaper - But Mostly do to Fact They are Mounted on
Very Hot - Super Tuned Motors & most of those Now have Turbo's

Heat is Breaking Coil packs down Sooner this Sneaks Up on Owners & It Bits Hard in Pocket Book ..

Eff% on this Newer Engines Pushed to Max , when Max isn't Quite there by just Little Bit Oily Carbon Build up in Cat

Then Please Explain Why ? $3500 Dollar Cats catch Fire inside to Point of - Melting Welds Off !
.. Need Replacing on 3-4 yr Old Models
40K to 90K = Gone ..

 

[MountainManDan]

One would Think and Yes Your Able to ~ Gap Down ~- which will Give You a Hot Stronger Gap - Spark Agree

But for How Long - Engines now Cost in Range of 12K to 18K to Replace

Not to Mention there are Higher Performance Coil Packs that Perform Better then OEM for $115 Bucks . .
Those are Heavier & Use a Higher Rated Temp. Epoxy ! ( Jump .065 ) Run Plugs for 120K

This has Become an Attempt by all Vendors Produce Coil Packs to Raise Cost to Auto Manufacturing ..

 

[MountainManDan]

Here You'll see Weight of Extra Windings - Primary & Secondary Windings in Coil Packs are Extremely Thin ..
so Little Weight = 18ft that is Equal Whole Lot more Windings inside !

 

[MountainManDan]

More Eff% Spark Plugs - Un-Shadow Flame Front or Kernel . .


I have Hand Filed Plugs & Tweaked Plugs for Over 30 yrs - _ | _

 

[Marcozi]

While use anti-seize on my spark plugs, I think you've put way too much on your plugs. I put a dab on the threads and press a paper towel onto the threads so that all that remains is a hint in the grooves of the plugs.

 

[MountainManDan]

it's 5X Photo - but yeah I wiped them some .. I had been looking at some other smearing it all way
To Bottom .. 95% Location . . is what I was Going for .. . . so . . Agree

If Your Plugs are more Expensive Type that have Nice Plating on them - really Not needed . .
Old Habits


What's Difference in Plugs in Post # 2 ~ Same Plugs . .

 

[dnewton3]

Seven posts from the OP and I'm still wondering ... What application is this?

 

[PandaBear]

I have never seen coil pack failing just slightly and makes it run richer. In theory it is possible but in practice mine usually broke the dielectric between wiring and short, not at the beginning or the end of the coil so they don't just drop the voltage slightly, they drop it a lot, and making it not sparking.

Slightly rich or slightly lean is probably more of a plug thing than a coil thing. Also measuring coil weight between 7.8 vs 7.9 seems to be a quantization error that, a coil being 7.849 vs 7.850 can round to 7.8 vs 7.9. I would not worry about any scale measurement that is less than 1 unit of precision off.

 

[clinebarger]

Seven posts from the OP and I'm still wondering ... What application is this?

FoMoCo & Sweden=Volvo?

 

[oilburnin]

15K Checking Plugs Burn :


View attachment 343422

66K

View attachment 343424


Note Marks on Insulator & Tips

What I have come to Note on Many Models of Cars & Trucks - 1 Thing that Owners Might Forget or
Just Quietly Fall Asleep on are Coils & Coil Packs . .


Like back in Day when cars all came with Lousy Brakes , Shocks, Wiper Blades ..

Coil Packs Lasted 150K ~ This Is NO Longer Case ~ Been an On Going Issue for some Time Now ..

Many have Not Woken Up to Very Slow Degrading of Coil Packs

What Happens is Super Slow Motion - Weaker Coil - leads to More Fuel in Oil , More Carbon Build Up
Less MPG slightly - so - Oily Carbon Deposits End up in Cat or Cylinder Wall - Piston Ring Interface . .

Rings could even Stick

I've Seen Fires Inside Catalytic convertors , Seen LSPI , Early Fuel Dilution = Why ~ Spark just Isn't Hot & Large & Fast ..

It becomes Weak , Slow Eff5 Drops way off ..

Changed out Coil Packs at 67K & 99K . . Both Perked right up & Better MPG ..

View attachment 343425

NGK recently put on their website explicit instructions to not use any anti-seize on their plugs. They come pre-coated with something.