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Freelander 1 Freelander 1 1.8 loosing power

Discussion in 'Land Rover Freelander' started by arnopretorius, Nov 13, 2019.

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  1. rob_bell

    rob_bell Well-Known Member

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    Plastic inlet manifolds have been known to leak around their seams, but would be very rare on a non turbo.
     
  2. arnopretorius

    arnopretorius Member

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    Any ideas how to test it for leaks?
     
  3. arnopretorius

    arnopretorius Member

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    I had a suspicion it is but wasn't that?

    How can I test for leaks?
     
  4. Nodge68

    Nodge68 Well-Known Member

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    I'd just replace it. There's no point trying to fix it, as the plastic used it nasty recycled garbage, which doesn't glue correctly.
     
  5. andyfreelandy

    andyfreelandy Well-Known Member

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    Just a linked question if I may? How does the obd detect a misfire? Does it only detect probs with electrical side or can it detect injector and fuel starve problems and still give a fault code?
    Thanks...
     
  6. Windsock

    Windsock Member

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    I use the Delphi e150 with laptop it will tell you the pressure that it is running at
     
  7. rob_bell

    rob_bell Well-Known Member

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    That was what I was thinking when asking about live data - otherwise a bit of a guessing game with an annoying intermittent fault.
     
  8. arnopretorius

    arnopretorius Member

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    My scanner is very basic... I will remove the inlet manifauld and inspect for any leaks...

    I know it's not coils and or plugs because they were replaced recently...

    I will try to test fuel pressure as well...
     
  9. rob_bell

    rob_bell Well-Known Member

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    New inlet seals are cheap and a good investment
     
  10. Nodge68

    Nodge68 Well-Known Member

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    The ECU is capable of detecting timing variations via the pulses from the crank position sensor. The ECU also knows the position of the crankshaft in its rotation, so if the pulses it's monitoring change in frequency around a particular cylinder, it knows there's a misfire in that cylinder. The ECU also monitors how much current is being consumed by the coils and injectors, so will flag if those are open or short circuit.

    Misfires without coil or injector errors are down to the HT side of ignition, or fuel / air issues.
     
  11. andyfreelandy

    andyfreelandy Well-Known Member

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    Thanks. A mate is bringing a 1.8 with a misfire for me to wave a magic wand at!! Just wanted to know what the codes are actually telling me. The clue is in his statement 'changed the plugs and now it's worse'!!
     
  12. rob_bell

    rob_bell Well-Known Member

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    I’m going to guess Poor spark due to failing coil packs and plugs that aren’t correctly gapped
     
  13. andyfreelandy

    andyfreelandy Well-Known Member

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    Yes, or the plug contact springs have gone floppy! Are they really that sensitive to plug gap? My old Ford is fine as long as the gap is somewhere between a hair and a file's width! It also runs on paraffin!! Manyany years ago my Dad 'tidyed up' and put odd drops of 'petrol' into our 100e. Very sooty exhaust confirmed that he had actually poured in a couple of galls of paraffin!! Got us home though. Plugs resembled an old sooty chimney. Happy days....
     
    htr likes this.
  14. Nodge68

    Nodge68 Well-Known Member

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    Yes, and plug type too. The K series has a 10.5 to 1 compression ratio, so needs a good hot spark to fire the mixture correctly. The plug gap should be bang on 1mm, and ideally the plugs should be of the platinum type, which the OE plugs were of course.
     
  15. arnopretorius

    arnopretorius Member

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    Any suggestions on plugs to use... I've put new plugs in but they are NGK and not platinum... Will check plug gap tomorrow.
     
  16. tonytherunner

    tonytherunner Active Member

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    This is what i use https://www.ngk.com/product.aspx?zpid=9928
     
  17. htr

    htr Well-Known Member

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    Ha, coincidental I just got a set of plugs to fit as the old ones have nearly done 100,000km - NGK PFR6N-11.
     
  18. tonytherunner

    tonytherunner Active Member

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    yeah, they are very good HTR ;)
     
  19. Nodge68

    Nodge68 Well-Known Member

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    Those are platinum plugs, and my preferred variety too.;)
     
  20. arnopretorius

    arnopretorius Member

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    Thank you Gents.. Will look into the plugs
     
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