Idling question

Discussion in 'Mech Tech' started by VDubvan, Jun 19, 2019.

  1. Hey guys,
    Quick question.

    Noticed the van doesn't mind idling, not running the sweetest but nothing dramatic, but if you put a tiny bit of revs on it will start to really struggle and can cut out, a little more revs and it's absolutely fine.
    Not missing a beat once your on the road, just really doesn't like a small amount of revs, in any gear.

    First noticed this on a long drive to Scarborough. Drive back from Scarborough, didn't do it at all, but sounds like it's doing it again today (only been idling it on the drive, haven't taken it out to check)
    Might be a coincidence but it's just had a new alternator.

    Problem is I've only just noticed it this week, and I'm meant to be setting off to France on Friday, and from my post history you can tell I'm clueless, so

    1. Any idea on what it could be?
    2. Is this something, with my limited knowledge/skill I could look to fix myself in the limited amount of time I have?
    3. Do I just crack on as it does run fine once you've got some revs on?
    4. Am I going to make it to France an back?
     
  2. Betty the Bay

    Betty the Bay Supporter

    Which engine ?
    Would suggest checking all electrical connections to carb/carbs .
     
  3. 1600 twinport, should have said!

    I shall check them all
     
  4. What dizzy you got on it? P.s. don't leave it idling for any length of time on initial start up they don't like it!
     
  5. Bosch powerspark JFU4 fitted 1.3k miles ago, ran well until this new issue
     
  6. mikedjames

    mikedjames Supporter

    Dirt blocking the first progression hole so as it comes off idle and the throttle plate uncovers the hole the idle jet cant deliver more.

    Or a sticky vacuum advance ( or split vacuum advance hose ) on an SVDA distributor , or wrong vacuum takeoff on carb being used for vacuum advance.
    Or having a 009 style industrial power pack distributor
    Or carburettor icing caused by non stock air feed. A shiny air filter on top in other words
     

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