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Thread: Metal oil and missfire

  1. #1
    Join Date
    Jun 2010
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    Karratha W.A.
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    Metal oil and missfire

    Hi I have just got my D1 running again after i got the dizzy wet last weekend runs smoth at idle but as i bring the revs up it misfires and sounds like its on valve bounce also is way down on power and surges really badly too the bits in the oil are alarming too im thinking that i may have wiped of a cam lobe but the engine isnt knocking or any thing also the plugs are new so are the leads and cap can any body help cheers

  2. #2
    Join Date
    Apr 2009
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    Double check there isn't any more water in the dissy. Until it is completely dry water WILL condense on the underside of the cap. Warm up the dissy with a fan heater etc with the cap off for 1 hour.

  3. #3
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    May 2007
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    Denmark WA
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    Did you remove the dizzy? If so is it correctly times on replacement? Are the weights in it free to move? - not a newer petrol motor person myself - do they even have weights? Electronic dizzys do some funny stuff if the chip gets damaged I know that much!
    1974 Military Lightweight Landy --- Some dementia at 50 years old
    2000 Disco series 2 now sadly moved on!
    No5 Trailer joined the fold... Awaiting graduation to road licensed!
    2021 Mazda BT50 or is that DMax?

  4. #4
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    Jun 2010
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    Karratha W.A.
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    Thanks guys I have removed the dizzy and blew it out with air and contact cleaner its in the right place timed in corectly still have no idea what it is only ignition things left to replace are the whole dizzy and ignition module pops badly at idle as well when cold when warm its fine at idle until you accelarate then it really lacks power and doesnt rev above 4000 rpm any more and the engine is still quite too so no metalic knocking noises to explain the metal in the oil cheers

  5. #5
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    Apr 2009
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    It really sounds like the ignition is retarded. Have you accidently set the timing After TDC instead of Before? Easy enough to do.

    Check each cylinder is firing by shorting each lead at the cap to ground, slide up the boots first. Then do a compression test if any cylinder is not running.

  6. #6
    Join Date
    Jan 1970
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    Travelling OZ - Back in SE Qld again at the moment
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    Check that the new plugs are the correct grade/heat range. Years ago an authorised dealer serviced my Nissan 280ZX and fitted the wrong plugs. Ran like a hairy goat under load. Many $$ for new leads and dist. cap I didn't need and another dealer finally found the wrong plugs. Purred like a kitten again with the right $12 worth of plugs...

    Ask my why I avoid authorised dealers (of any make) like the plague.

    Ian
    Ian &
    Leo - SIII 109/GMH3.3
    Daphne I - '97 Disco 300Tdi Manual
    Daphne II - '03 Disco Td5 Auto

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