Spark plug leads DS23
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  1. #1
    Fellow Frogger! ntr1972's Avatar
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    Default Spark plug leads DS23

    My DS23 recently received new spark plugs. It ran well for a few days, now it is running a bit rough (seems to be the lead to cylinder 1). Just wondering if I should get leads from repco/super cheap etc or if there are any other suggestion?

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  2. #2
    Fellow Frogger
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    Is there oil down around the plug? The seal on the cam cover leaks and can cause problems when the oil collects down the plug tube.

    Have a look at it running at night and you may see a stray spark somewhere.

  3. #3
    Fellow Frogger! ntr1972's Avatar
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    Thanks that's a good tip.the oil filler cap came loose (it has a safety wire attached) so maybe some oil splattered into the spark plug surround (there was a bit of oil spit).

  4. #4
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    If the filler cap came loose, you need to replace the rubber ring on it. It may look like it's plastic, but it's actually rubber, very much like a pair of thick o-rings siamesed.

    The same goes for the oil filter housing - it actually has two o-rings in it, one around the periphery and one on the bolt. I changed these yesterday and the old ones were so hard they snapped like plastic. Probably original factory items from 1974! Anyway, it's worth changing them next filter change.

  5. #5
    Fellow Frogger! ntr1972's Avatar
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    check - I'll do the filler cap.

    No leaking spark.

    The leads look fairly new (not original, but maybe 10-15 years old) so I try and get the same.

  6. #6
    Fellow Frogger
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    Be careful to get the right set of leads. The leads for the Bosch distributor with the leads plugging into the top need to be longer than the leads used for the SEV/Ducellier caps with side plugs. I have some new Bougicord leads for EFI DS, but they are too short to use with my Bosch cap. I reckon they'd fit any D using the cap with leads plugging in the side.

  7. #7
    VIP Sponsor richo's Avatar
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    I have genuine red Bougicord, aftermarket "Bougicord style" red silicone leads and after market silicone leads ( grey) with long caps for the plugs in my parts bin.
    Plus a set of used genuine Bougicord.
    Bougicord being copper cored rarely break down or have increased resistance.

    All for carb equipped cars only.

    Bosch distibutors (with upright caps) only fitted to EFI cars I've seen, though doubtless there are exceptions.

    Hope this helps.

  8. #8
    Fellow Frogger! ntr1972's Avatar
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    Thanks Richo. Where did you get your leads from?

  9. #9
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    Quote Originally Posted by ntr1972 View Post
    Thanks Richo. Where did you get your leads from?
    Overseas: UK, USA and The Netherlands.

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