rough idling M30 (rubberknees)

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   I have a poor idle, and regardless of how tight I make the connections and how good the hoses etc are, it still idles badly, low (650rpm) and when you come to a halt, 9 times out of 10 it stalls!

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M3AG Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member II 7 series & e36 m3 registrar! (Madness) Joined: 17-October-2002 Location: Good Old Hertfordshire Status: Offline Points: 1644	Posted: 17-June-2005 at 10:45
	I have a poor idle, and regardless of how tight I make the connections and how good the hoses etc are, it still idles badly, low (650rpm) and when you come to a halt, 9 times out of 10 it stalls!

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siscobmw Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member II Joined: 13-May-2005 Location: North Italy , near lake of Como Status: Offline Points: 201	Posted: 16-June-2005 at 10:17
	Rough or low idle speed? Francesco from italy

Philip Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member II E23 the forgotten 80s BMW Joined: 28-January-2005 Location: Essex Status: Offline Points: 1425	Posted: 15-June-2005 at 10:34
	rubberknees' 528i M30 is suffering low idle speed. these comments may help courtesy of the good 'ol boys on the Bimmerboard "Rough idle is all about vacuum. Sure you can throw some corrective actions at the problem in the form of electrical fixes, but if you do not have a good running motor to begin with, who knows how many 'fixes' will be needed. Check the vacuum hoses, oil fill cap, oil dipstick, oil pan bolts, valve cover nuts, idle air hose, air intake boot, vacuum connection on the manifold for the HVAC and other stuff. Adjust the valves and go over them twice, once to check and once to verify they are correct when the engine is dead cold. Maybe even check the gap at the rocker instead of the now worn valve stem-eccentric."
	Philip '86 E23 735iA SE - Polaris - The Silver Surfer '85 E23 735iA SE - Cosmos Blue - VJ '86 E28 528iA SE - Dia Black - Helga '86 E23 728iA SE - Polaris - The CHAV mobile