Mike1alike
Established member
I would add in this topic something that I've just discovered, as I've mentioned earlier that
The adjustable tightener of accessories belt had the roller's movement limited by the deformed cover that was holding the roller in it's place. I think that was really causing the rev to drop down on idle.
And this days the same roller, moving even harder than before, added extra engine load and caused the engine to rev up on idle this time, to 2000RPM. The rev was done repeteadly up and imediatly down again and so on. The problem seems to be fixed now, after I've took that deformed cover off and placed a washer instead and the roller moves free now.
It looks that the high pressure was just something extra that was adding up to the real problem and by fixing the pressure issue I've manage to make the engine not to rev down, but the problem was still there.The problem when rev goes under 600 RPM is the pressure being to high inside the cooling system.
The adjustable tightener of accessories belt had the roller's movement limited by the deformed cover that was holding the roller in it's place. I think that was really causing the rev to drop down on idle.
And this days the same roller, moving even harder than before, added extra engine load and caused the engine to rev up on idle this time, to 2000RPM. The rev was done repeteadly up and imediatly down again and so on. The problem seems to be fixed now, after I've took that deformed cover off and placed a washer instead and the roller moves free now.