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Old 10th February 2006, 04:16 PM   #1 (permalink)
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Question Cleaning spark plugs - how?

Just done a couple of searches and can't find the info (even though I KNOW it's been mentioned a squillion times before!!)...

As the entire world and his wife now knows from my incessant whingeing, my car's running rough. Bear's ****. As.

The next thing to do is to remove the plugs and check their condition. I suffered some heavy det very briefly (70ish on the PFC) before I wound the boost back down so will be checking that the plugs are all intact. I've also done a fair few short journeys with little or no boost, so am aware that the plugs may be mucky. What's the best way to clean them?

I have it in my head that it has summat to do with brake fluid (or is it clener??) and a gas hob but I'm not sure enough to just 'try' it

Am just hoping that all the electrode's still there on each plug as if one's broken off with the det and bent a valve I'll be sobbing for a week... On the plus side there doesn't appear to be any smoke to at least it doen't look like the bore's been scratched if it HAS broken a tip off...

So - cleaning spark plugs. How?
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Old 10th February 2006, 04:34 PM   #2 (permalink)
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A good scrub with a wire brush, then a good squirting of break or carb cleaner.

What plugs are they?
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Old 10th February 2006, 04:50 PM   #3 (permalink)
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becarefull, the tips on iridiums are delicate so gently clean with a soft wire brush and avoid scraping the tip.
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Old 10th February 2006, 07:25 PM   #4 (permalink)
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Just change them, iridiums don't like being brushed and platinums are coated
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Old 10th February 2006, 07:30 PM   #5 (permalink)
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50 for a new set of iridiums mate, dont clean them
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Old 12th February 2006, 05:02 PM   #6 (permalink)
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Quote:
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50 for a new set of iridiums mate, dont clean them
Sorry for the Hijack

Pikey where is the best place to purchase these plugs at that price??

Thanks

Jim.
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Old 12th February 2006, 05:49 PM   #7 (permalink)
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Quote:
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A good scrub with a wire brush, then a good squirting of break or carb cleaner.

What plugs are they?

I would agree with that , and just make sure it's a soft wire brush designed for cleaning spark plugs.



And NO just because the plugs are mucky doesnt mean you have to go and splash out on a new set.
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Old 12th February 2006, 05:50 PM   #8 (permalink)
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Quote:
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Sorry for the Hijack

Pikey where is the best place to purchase these plugs at that price??

Thanks

Jim.
Try here....

http://cgi.ebay.co.uk/NGK-IRIDIUM-SP...QQcmdZViewItem
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Old 12th February 2006, 06:37 PM   #9 (permalink)
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www.spark-plugs.co.uk

The best way to clean plugs is to go out and give the car a damn good thrashing When one of my boost pipes popped off I had to limp the car home about 3 miles running terribly rich, and the car needed a good few hard runs up on boost before it was running right again
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Old 7th March 2006, 02:34 PM   #10 (permalink)
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Which plugs for a 33 GTR running 1Bar(400hp), 7's isn't it ???

Pikey, you got a part number for the plugs
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Old 7th March 2006, 02:41 PM   #11 (permalink)
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IQ24's would be fine with a stage 1 GTR. I have a few spare sets kicking about.. pm me if you want them...
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Old 7th March 2006, 05:12 PM   #12 (permalink)
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Modern plugs are not designed to be cleaned, Im afraid, it should really be a swap every time, Can be damned expensive too, but they are designed to last a long time, It takes no time at all to remove a platinum or iridium tip with sandpaper.

The preffered method is with a Sparkplug sandblaster if your going to do them, but most folk dont have these anymore, but I guess like some of the guys say, if your carefull with a soft brush and a spot of carb cleaner you will prolly be ok.

Mark.
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Old 7th March 2006, 05:24 PM   #13 (permalink)
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ok, only my 2p's worth, but when i ACCIDENTLY put deisel in my car and had to clean off my HKS irridium spark plugs, i poured petrol over them and lit them for a while.

worked a treat!
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Old 7th March 2006, 05:34 PM   #14 (permalink)
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Since we are on the spark plug note, anyone know the service interval for plugs ??
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Old 7th March 2006, 05:36 PM   #15 (permalink)
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from memory denso Iridiums have a service life of 18,000 kms. but I change mine once a year or maybe twice depending on how much abuse its been give ie track days or drag etc..
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