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Stephen Bearded Minky Hill

Spark Plugs....ngk/bosch

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I may have stumbled across a thread on passion ford about rough running cvh efi's. As it turns out if you are using ngk plugs the electrode is slightly too short. I have now fitted a set of Bosch FR6DCX plugs and I cannot believe the difference. I'm running efi turbo by the way and set the gap to 1mm.

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Hmmm, hinteresting.... Will have a gander at ours later, can't think what make they are but I've always hated NGK in my bikes as they seem to foul so much easier than other makes, even cheapies... Also something I've noted when only NGK has been available, the resistor type are even worse than non resistor so where possible I "upgrade" the code from, for example, DR8 ESL to D8 ESL hence getting rid of the resistor part.

 

Be good to hear from others about what plugs they use and how their car runs...

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Bumping this post so I can find it easier when we come to the idling problem after the roof is done...

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cheers stu i fitted some what a driferance it made and with the supper chip runs lovely cheers mate

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Well our set of FR6DCX arrived today, will fit 'em and report back when the tension cable "situation" allows me to finish the new roof :smile:

 

As an aside, those who have them already, where were yours made? It's stamped onto the side of the plug just above the sealing washer. I was expecting them to be German but they were made in Russia...

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ok cool thanks, just seemed weird. Can't wait to see if they make a difference now :smile:

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Got a set coming monday,and a free bottle of vodka thrown in LOL

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Well out came the old plugs, Bosch super FR7DC no less but they are well and truly worn out although strangely the gaps were a bit small IMO at 0.85mm, and they're utterly black. Also they were none too tight, the sealing washers aren't even crushed.

 

Here's hoping the new DCX's have a noticeable effect. I can't see it not improving to be fair, from the state of these I think a set of NGK's would have even helped!

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Guest slypanther

Hello.

Has anyone else tried ..

The bosh plugs? Pls my efi runs like a pig.

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Ford's of this era never did like NGK plugs for some reason. The genuine ones always worked well but Bosch were ok too. Imo

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We've got them in now and starting is much improved from what it was, idle does seem smoother also but haven't driven it yet due to our ongoing roof replacement. However we do have other issues with fuelling which I've fiddled with at the same time so any improvement is not guaranteed to be from the plugs (bearing in mind ours were, admittedly eons old, Bosch to start with)

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Strange mine runs best on NGK plugs. Tried all sorts, from Bosch, Motorcraft and Spitfire, and Champion, NGK were the damn tickety! Even looking at the colour the NGK are well suited and never missed a beat.

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