General Valve clearances??

Discussion in 'General Discussion' started by hsyasin, Wednesday 10th Jul, 2013.

  1. hsyasin Valued Contributor ★ ★ ★ ☆ ☆

    United Kingdom Hammad Bury St. Edmunds
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    Hey all,
    I was wondering if anyone can suggest me that whether my car needs valve clearnce/adjustment. Coz the thing is, I feel like its not that quick/powerful in lower revs or when u start from stop, but when the car is cold in the morning, it just flies when u just try to move it a little:Unknown:

    Any guidance would be greatly appreciated:Tea:
     
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  2. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
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    When was the last time they were done ? It doesn't take too long to do you could just do it anyway.
     
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  3. hsyasin Valued Contributor ★ ★ ★ ☆ ☆

    United Kingdom Hammad Bury St. Edmunds
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    thats the thing, I don't really know/believe when they were last done, coz the guy i bought it from didnt know much about these things or had receipts.
    In fact, when i changed the spark plugs, and took out the old ones, they looked like they've never been changed/touched and the car had done 90kmiles.
    Also, I'm a bit hesitant in doing them myself, as I don't have the required tools and proper space to do this and not an expert in this. and I've read that it is quite critical to adjust them properly.
     
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  4. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
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    OK, just find a reputable garage preferably a Honda specialist to do them for you.
     
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  5. hsyasin Valued Contributor ★ ★ ★ ☆ ☆

    United Kingdom Hammad Bury St. Edmunds
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    yeah i've, and they said £100.
    And then there's another garage called copper garage near where i work and the guy said £64 and they seem quite good at what they were doing.
    But, the question i have is, the symptom that i told u about in my post, like quite powerful and nippy with cold engine and not so quick when the engine is warm, does that mean that it could do with valve adjustment?
     
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  6. ArcticFire-Account Closed Banned Getting Started

    Scotland Graham Scotland
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    I can't imagine valve clearances can be done for £100 never mind £64. There's a good few hours work involved if done properly.
     
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  7. i-DSI Expert Advisor ★ ★ ★ ★ ★

    Belgium Aalst
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    In general, typical symptoms for non correct valve clearance:
    - difficult to start (warm and/or cold)
    - engine stall
    - might start good, but after a few seconds/minute: bad idling
    - ticking sound
    - bit higher fuel consumption
    - loss of power
    - pick up of the engine not good
    Different symptoms possible, depending on clearence to high or to low and the degree out of range.
    What you discribe is in fact: 'a warm engine (only) that does not react good on the throttle in (very) low revs'. In theory this can be caused by wrong valve clearance. But it can also be caused by a number of other things... (things that create a wrong fuel mixture).
    But: did you compare this already with a good known Accord, same as yours? It's hard to tell if what you feel is normal or out of range.
    Anyhow: valve clearance is important basic maintenance. In doubt: let it be carried out ASAP.
     
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  8. hsyasin Valued Contributor ★ ★ ★ ☆ ☆

    United Kingdom Hammad Bury St. Edmunds
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    Very nicely explained mate, thanks :Thumbup:
    yes, i'll compare it with a good accord.
    It could be just me then, coz fuel consumption is spot on, just filled up again lastnight and turned out to be 8miles per liter.
    So, just another question, as you say that its important basic maintenance, could it cause any harm if left for longer?
     
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  9. i-DSI Expert Advisor ★ ★ ★ ★ ★

    Belgium Aalst
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    Yes! Not good valve clearance can do serious damage!! If the clearance is not big enough, when warming up, there will be a moment where the valves don't touch the valve seats (enough). So no cooling and valves might simply get burned and destroyed. This is the most extreme damage you may suffer.
    Not sure about this one, but I believe to big clearance might damage the camshaftlobes in the long run as the moment of 'impact' will be to late on the lobe and less smooth compared to perfect clearance.
     
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  10. hsyasin Valued Contributor ★ ★ ★ ☆ ☆

    United Kingdom Hammad Bury St. Edmunds
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    Just got clearences done, and the garage told me that they were loose, and i've to say the engine seems much quieter now.
    But there's another thing that I've noticed, the exhaust of my car is quite black, almost like a diesel, whereas compared to my old Mitsubishi, it had a squeaky clean exhaust no matter how hard i drove it.
    Anyone know if thats normal or should I go ahead and use a decoking spray?
     
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  11. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
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    The exhaust was probably newish on your Mitsubishi can't see how it wouldn't get black over time.
     
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  12. hsyasin Valued Contributor ★ ★ ★ ☆ ☆

    United Kingdom Hammad Bury St. Edmunds
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    NA seriously, I had that car for 3yrs and the exhaust was surely the original one..
    in fact, when i took it to garage for MOT, and when the guy returned with pass certificate, while showing me the emissions test his words were, "this is as good as a new car"
     
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