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Author Topic: Spark Plugs  (Read 13987 times)

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TopNotch

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Spark Plugs
« on: June 01, 2019, 03:58:38 pm »
How often to you think about your spark plugs? Recently, I've noticed a slight miss when accelerating hard in my yellow car. So this morning I pulled a plug. Sure enough, it was worn quite a bit. I just happened to have a set on hand, so I replaced them. (Once in a while I think ahead.) No more miss.
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NoMad

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Re: Spark Plugs
« Reply #1 on: June 01, 2019, 04:06:38 pm »
I tend to check them, clean them, and gap them every third oil change so roughly 15,000 miles between.
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TopNotch

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Re: Spark Plugs
« Reply #2 on: June 01, 2019, 05:33:50 pm »
Here are my plug tools:

A swivel head ratchet, a wobble head extension, and a home-made plug socket (16mm deep socket with an o-ring super-glued inside at the appropriate location). I like my home-made socket better than any purpose-built plug socket I've had.
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GTRS Fiero

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Re: Spark Plugs
« Reply #3 on: June 02, 2019, 08:23:46 am »
I had a set of original plugs that I ran to 150K miles.  Since if was major work to get to 2 of the plugs (not a Fiero), I did replace the plugs while the engine was out.  The plugs looked fine.  The car ran fine, but the water pump was being replaced.
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Fierofool

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Re: Spark Plugs
« Reply #4 on: June 02, 2019, 04:07:23 pm »
A spark plug question for those who have done the 3.4/7730 upgrade.  Did you change to the plugs recommended for the 3.4, use the Fiero recommended plugs, or are they the same?  I would think DIS would require a different plug than a conventional distributor ignition system. 
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GTRS Fiero

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Re: Spark Plugs
« Reply #5 on: June 02, 2019, 04:18:30 pm »
I am using the 3.4 plugs.  Originally, the swap had the Fiero plugs, but one plug broke on removal, so all were replaced.

I do not see why the plugs would matter.  Of course, knowing nothing about ignition and spark, this means little.

I can take a plug for a car and use it in my lawn mower.  The gap may be a bit different, but I think DIS uses the same plugs.
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