I have a issue with my car dying when i push the clutch in, even in neutral, but only when its hot and i rev the engine then push in the clutch while its coming down in revs........the odd thing is whenever i just push the clutch in neutral the rpm's will fall from like 750 to just below 500 if i keep the clutch in, it will correct back up to 750, if i then let the clutch back out it drops and resets again...its really weird cause when it does die from driving and pushing in the clutch, whenever you restart it makes a knocking noise right when you start it then starts fine....just a quick knock knock.....but if you just cut it off and restart doesnt make this noise , any ideas any help would be appreciated, by the way this a brand new motor and clutch that just got put in, running chipped p28

 

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