Reply To: Valve clearance, camshaft, camshaft tensioner – a problem or a serious fault?
Hi,
Generally speaking, these are spark plugs that have already travelled 8,000 kilometres with me. I put them back in after the last overhaul, when it turned out that a regular NGK CR8E spark plug had left its thread in the cylinder, which is why I prefer not to use regular ones… I’m afraid that the next one will blow and I’ll be forced to give it to my friend again, who will take everything apart, unscrew it, reseal it, etc…
Perhaps there is another brand worth recommending besides NGK, such as Denso? I have read in various groups that NGK spark plugs are often counterfeited in Poland… I don’t know whether to believe it, but after what happened to me, I really have doubts about the authenticity of this product…
Generally speaking, as for smoking, it smokes slightly when the engine is warming up, then when the engine is warm, there is no smoke, and when accelerating with the throttle at idle, it does not spit out any smoke or ‘splash’ anything from the silencer (I drive without a DB killer).
I use the most expensive fuel available in Poland, which is 98 octane petrol.
As for the spark plug threads, when it comes to the seal on the valve cover, there are no leaks, the chamber where the spark plug is located is dry, and the only residue is oil from the vacuometer tests when we injected oil through it to seal the piston rings. I will clean threads there to be sure.
Should all these tests be carried out on a cold engine or a warm engine?