Common questions

How often do you change spark plugs on a Hemi?

How often do you change spark plugs on a Hemi?

every 30,000 miles
With the HEMI V8 engine, spark plug replacement requirements are based on model year and displacement. The first HEMI engine, the 5.7L, required replacement every 30,000 miles. This interval for this engine continued until 2014. In that model year, the replacement interval was extended to 100,000 miles.

Why are spark plugs only 30, 000 miles?

Asked the dealer about changing to a platinum plug to avoid the 30,000 mile change and was told that the plug used in the 5.7 Hemi is made by NJK for that engine, and only that engine, and that changing to a platinum will lead to nothing but troubles.

How much do spark plugs cost at Rock auto?

Rock auto has replacement plugs for 2010 R/T’s Autolite double platinum for $3.97 ea. , another platinum by ACDelco for $6.25 and an iridium by Autolite for 5.03 (sale)They dont list a copper plug.???? Did you find the recommended reading relevant to this discussion?

How many spark plugs do I need to replace?

Depends on the vehicle. I mean imagine one of those crappy Ford or GM minivans with the 90 degree V6 engine, three plugs relatively simple to replace, but the other 3, are up inside the dashboard and to replace them, “step 1: remove engine by raising the vehicle above”, LOL to hell with that!

When to know it’s time to change spark plugs?

If you suspect or know that you’ve likely waited too long to replace your spark plugs, or you just don’t know the last time they were changed, there are some warning signs that may alert you that you have a bad spark plug and an immediate change is needed.

Is it bad to change spark plugs after 100, 000 miles?

100,000 mile spark plug changes = another bad idea from auto engineers. Yeah, you save the cost of one spark plug change (vs. a 50k interval) but risk ruining your cylinder heads when you try to pull the original plugs at 100K+ miles. I recently changed my Odyssey spark plugs after 100,000 miles and they were still in great shape.

When does a spark plug wear out in a car?

Sitting atop your engine’s cylinder head, it receives a spark from the electronic ignition in modern vehicles, or the distributor cap and rotor found in older cars. Eventually, at around 30,000 miles to as high as 40,000 miles, conventional spark plugs will wear out, which could cause stalling, starting problems and engine misfires.

How much does it cost to replace a spark plug?

Any or all of these symptoms suggest it’s time to have your spark plugs changed. What’s the replacement cost for spark plugs? Spark plugs generally cost less $10 each.

What should I do to loosen spark plugs?

The only way to find out what will happen is to try to remove them. Penetrating oil applied a day or two in advance will help with potential success in removing the spark plugs. Also, you do not want to try to loosen them when then engine is hot unless you are a member of the extra-work-is-fun club.

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Ruth Doyle