Q1. Is this happening when the engine is warming up (from cold start)? Q2. Is it happening only once engine is fully warmed up? Q3. What idle revs is your engine doing (no load, in neutral) at start up (cold) and once fully warmed up?
Q1: Yes, after certain observation, it happened when engine is warming up, cold start is usually normal.
Q2: I think so....
Q3: idle in cold start is ard 1000 -1100 , fully warmed up 800-900 and i realized it shakes a bit, not stable.
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