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FIAT GRANDE PUNTO 1.4 / 77 HP - Too much valve clearance / tightening the valve

BURMAR 10677 9
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 16588042
    BURMAR
    Level 23  
    Hello,
    I have three questions and I am asking you to answer them because I have dismantled the engine and I do not want to spoil anything during assembly.
    1. At what moment tighten the cylinder head cover bolts (new gasket, new O-rings)
    2. The valve clearance should be 0.3 - suction / 0.4 - exhaust. And I have 0.35 and
    0.4. Do I have to adjust them or can I ride like that. (Feeler gauge is OK)
    3. What is the order of the valves on the timing side.
    I am asking for quick help.
    greetings
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    #2 16588114
    barteksmrek
    Level 28  
    This moment is not even mentioned in the book. Just in moderation. The gasket should slightly bulge outwards. It's six screws so don't twist. Looseness can be. Worse than smaller because then there is burning the sockets but if you have the cover removed, adjust it. What do you mean by valve order?
  • #3 16588232
    BURMAR
    Level 23  
    Thanks for the answer. The problem is that I have to assemble the car because the garage rental is over and the Fiat service is under renovation and I have nowhere to buy washers for adjusting the valves. The engine works very well so I will probably have to reschedule the adjustment until the next time.
    As for the order. I mean if I have measured the valve clearances, i.e. which are suction and which are exhaust. There are of course 8. So from the timing side, for example, what are they in turn?
    (e.g. suction, exhaust, exhaust, suction etc. or otherwise) I suspect that 0.45 is exhaust but I want to make sure.
    Greetings
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  • #4 16588317
    barteksmrek
    Level 28  
    It is obvious that on the intake manifold side you have suction and exhaust ones.
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  • #5 16589171
    BURMAR
    Level 23  
    Thanks for the information.
    Timing changed. All in accordance with the manuals. I set it to original locks. There were no problems, although ...... I have to ask for help again.
    After putting on the belt, tensioning the tensioner, I took off the locks and checked whether after turning the shaft the marks would match. And here my surprise (little experience and information) turned out that after turning the shaft a few times, the marks on the camshaft and shaft moved. The ones on the bar went one tooth forward. TO THE CAMSHAFT AND SHAFT. After a few extra turns, the difference was already two teeth on both wheels. Three next teeth, then four.
    IS THIS IT supposed to be?
    Therefore, I do not know whether to do everything again or it is OK.
    I am asking for help again.
    Pozdrwiam
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    #6 16589196
    barteksmrek
    Level 28  
    The marks on the wheels are supposed to coincide. After tightening the belt and turning the shaft a few times, tighten the tensioner, set the mark on the shaft of the shaft and the mark on the camshaft is to match. If you do not relax the strap and move it. He writes clearly in the book. The tensioner is still to be unscrewed only to tighten the belt.
  • #7 16589227
    BURMAR
    Level 23  
    Thanks. Now I'm broken. I did everything right, with locks, nothing jumped. I moved the signs to the new strip from the old one and marked it with varnish. I counted the teeth. After putting it on, everything was OK. So why, after turning the shaft a few times, do these marks on the belt move in relation to these marks on the wheels. Always equal to the same number of teeth on the shaft and on the pulley. The result is that the arrangement of the wheels relative to each other is always the same.
    What is going on ? When you put the locks back on, everything fits.
    Well, I think I will undress and I will do it again. But again it will be the same. I don't make a mistake.
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    #8 16589234
    Karaczan
    Level 42  
    You don't get the signs on the bar to suggest that they don't overlap! So it has to be.
    Wheel marks relative to the engine are to be agreed.
    Someone once counted somewhere. I think 40 or 90 turns would cover, of course, depending on the engine. Have a nice filming.
    The marks on the bar are for assembly only.

    Valves 30/40 +/- 5 so ok. Anyway, greater clearance is not as dangerous as too low clearance.
  • #9 16589255
    barteksmrek
    Level 28  
    Of course, the wheel-engine marks !!!!! Not any other. I didn't even consider it. THE SHARES ON THE WHEEL SHAFT AND THE SHAFT MUST BE COVERED WITH ENGINE MARKS. !!!
  • #10 16966231
    BURMAR
    Level 23  
    I didn't regulate anything. On your advice I made the engine and it's OK. Thank you for your help.
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Topic summary

The discussion revolves around the assembly and adjustment of a FIAT Grande Punto 1.4 engine, specifically addressing concerns about valve clearance and timing marks. The user inquires about the proper moment to tighten the cylinder head cover bolts, the necessity of adjusting valve clearances (noting measurements of 0.35 for suction and 0.4 for exhaust), and the order of valves on the timing side. Responses indicate that the cylinder head cover bolts should be tightened moderately, ensuring the gasket slightly bulges outward. It is suggested that the user can operate the engine without immediate adjustment of the valve clearances, as greater clearance is less harmful than insufficient clearance. The correct valve order is confirmed to be alternating between suction and exhaust. Additionally, the user expresses confusion regarding the alignment of timing marks after turning the shaft, with responses clarifying that the marks on the camshaft and shaft should align with the engine marks, and that discrepancies may arise from improper tensioning of the belt. Ultimately, the user successfully completes the assembly without needing to adjust the valve clearances.
Summary generated by the language model.
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