Spark Plug replacement

[GerryAllen]

Guys & Gals, how often ie. many miles do you replace your spark plugs? As a rough rule if thumb how often do you pull the plugs and clean them. I understand the cleaning of the plugs is dependent on a number of factors.
Gerry Birch Bay WA

[Ivan in southeast va.]

If it's running good, I leave them alone. I don't clean or re-gap them unless they are fouled or running poorly.

[Brentwood Bob]

3X plugs? I am not impressed with metric modern plugs, but who am I?
I remember the sand blast plug cleaner.

[GerryAllen]

Bob. the question was about every how many miles do you replace your plugs. I used use the sand blast plug cleaners as well :~)

[Patrick L.]

The old rule of thumb was about 10K miles for old points ignition. But, thats an old rule, they'll go much farther


The Autolite 3076s have been in mine about 30 yrs.

[Herb Concord Ca]

Sponsored Links (Register now to hide all advertisements)

Seeing as today we have lead free gas, plugs may outlast you. In new cars, some can reach 100,000 miles. In you Model A a long time!

[30Murray]

Gerry, spark plugs are like Apple pie. If they're golden brown they're just right. You should know that.

[J Franklin]

When you are pulling a fairly steep hill and start getting a miss it is time to look at the plugs.

[Dino's A]

Originally Posted by J Franklin

When you are pulling a fairly steep hill and start getting a miss it is time to look at the plugs.

Sure, it can be time to clean or replace. BUT.......recently my 1943
Ford jeep was missing under a load and it turned out to be the
points were bad. Metal transfer to the point arm was the culprit.

I filed the points clean, to diagnose the problem, and ordered a set
of points. The condenser causes the transfer so definitely changed that.

[CWPASADENA]

I have 18K miles on the 3X reproduction plugs in my Tudor. I have yet to clean them, they still are just fine.

Chris W.

[J Franklin]

The 3X plugs seem to run very clean in my car.

[chrs1961815]

Don't mean to hijack this thread, but should you replace plugs after a head gasket leak? I am in this situation right now.

[J Franklin]

Originally Posted by chrs1961815

Don't mean to hijack this thread, but should you replace plugs after a head gasket leak? I am in this situation right now.

What would be the need? Plugs should be replaced when they no longer do their job.

[chrs1961815]

Originally Posted by J Franklin

What would be the need? Plugs should be replaced when they no longer do their job.

Don't know if antifreeze does any harm to the electrode or not.

[CWPASADENA]

The plugs should be fine after a head gasket leak. Anti-freeze should not harm them.

Chris W.

[Tosti36]

If the engine is running fine I don't touch them. You might want to just remove and get a reading on how the engine is running.

[katy]

Originally Posted by Tosti36

You might want to just remove and get a reading on how the engine is running.

How is the engine going to run if he removes the spark plugs?

[J Franklin]

Originally Posted by katy

How is the engine going to run if he removes the spark plugs?

Maybe take one out at a time?

[woofa.express]

Originally Posted by Ivan in southeast va.

If it's running good, I leave them alone. I don't clean or re-gap them unless they are fouled or running poorly.

I agree. During my childhood I learned a useful saying. "Let sleeping dogs lie".