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    Intermittent heavy rattle, misfire and change in engine speed

    Hi Guys, Apologies for my absence, but I have been awaiting the results of running the car. Frank, it looks as though you were right - thanks! After dropping the sump and checkiong the bottom end and searching for any play in the conrods, I put it all back together and ran it. Initially the...
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    Intermittent heavy rattle, misfire and change in engine speed

    I think you might have something there Frank. I have been doing some surfing on the net and detonation doesn't seem to be beyond the realms of possibility. I viewed some video on Youtube of a demonstration: and this sounds very similar to what I am getting, except the rattles on my engine are...
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    Intermittent heavy rattle, misfire and change in engine speed

    Thanks for the suggestions guys. Robodestro, that's certainly a possibility, but there don't appear to be any score marks down the bores. Frank, it's a 52 plate - 2002 I guess - it also has coil packs. I had been wondering if it could be caused by sticking valves. My reasoning was that if the...
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    Intermittent heavy rattle, misfire and change in engine speed

    More information: The car is a 1.o litre, has not been modified or had the engine changed and has about 75,000 miles on the clock.
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    Intermittent heavy rattle, misfire and change in engine speed

    Hello Everyone, Usual thing - new to the forum and got a problem with a K11. The engine lost power and misfired. when I looked at it, the two centre plugs had been left loose and the plug in number 2 cylinder had lost both the outer and inner electrodes. Number 3 plug had lost the outer...
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