Sticking valves, any cures ?
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Thread: Sticking valves, any cures ?

  1. #1
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    Sticking valves, any cures ?

    Okay, my Vectra is currently suffering from sticking valves when started from cold (seeing as it's winter, thats quite a lot).
    What additives do you lot use/recommend, as I was in Halfords yesterday and there's freaking loads of them..

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    dont add anything to the oil, nothing. Oil companies spend millions developing oil, which does allot more than just lubricate, it cools, removes and suspends caustic substances and gasses its exposed to. Anyway, additives wont stop the valves sticking because the valves dont techincally come in contact with the oil, maybe just a little gets past the stem seal. I presume the valves are sticking at the head end because of not much lift and 95 ron fuel, sort of petrolly gunk, bit of carbon and crap mixed in.

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    No cure really, apart from taking cyclinder head off / valves out. This is mostly likely to happen on the inlet side, probably due to fuel, oil etc seeping into the guides and turning into a gum.

    Problem is keep running the engine like this could cause more damage i.e. camshaft, bearings and if the valve sticks open too much, imagine a piston.....

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    i remember there was a feature on watch dog back when anne robinson did it. It was about the ecotec engines, cars a few months old getting sticky valves. slim valve lift and cheap superkarket petrol was to blame.

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    Re: Sticking valves, any cures ?

    Which petrol are/were you using?

    Supermarket, Esso etc???

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    Sticking valves,

    First and cheapest, "STP" injector cleaner, in fuel as directed on the can, give it a couple of days to do its stuff.

    If no joy, next head off and clean crap off valve stems!

    After sorted, give it a blast OVER 4,000 rpm every couple of days as it is rumered that the valves don't get chance to "rotate" at lower rpms

    Could you have a better excuselmao lmao

    DOUGAL
    EVERY ACTION HAS AN EQUAL AND OPPOSITE REACTION.

  8. #7
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    Cheers people.
    I've got high lift cams, and it runs on 95 ron Mobil/Bp fuel.
    I was looking at some sort of fuel additive rather than oil additive.
    Believe me, the last thing I want to do on this engine is the head gasket.

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    Try some Redex upper cylinder lubricant/cleaner , it may help, alternatively there are methods which involve absorbent cloth down the plughole, plenum off and carb cleaner on the stems on the cylinder that has the valves open.. do this with each cylinder in turn.

    Dave
    Se7ens petrol head
    (It's the voices that make me do it)

  10. #9
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    Use recommended vauxhall oil.

    I had a prob with the birds 1.4 16v Tigra. put mobil synthetic in and it ran like ****, kept missing. valve sticking etc. tried all sorts, A plug was cracked but it wasnt that.

    changed the oil for vaux semi synthetic and run fine since!

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    Never thought of using their own stuff, mainly use Castrol Magnetec.

    ALways used the stuff in my cars, no problems (Yet!)

  12. #11
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    volvo 850 t5's used to have same problem, technical mod was to change spark plugs and get on nearest motorway and thrash the balls outta the git 4 half an hour, great fun when they used to bring the police versions in for this problem lmao lmao lmao

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