cold start engine knock and tap... help - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 01-16-2012, 12:24 AM
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cold start engine knock and tap... help

ok guys. im lost on this one. the coldest night here in nj all year. temp is 25. i go outside and start my car. vanos and a tap knock sound while car is running. ses light came on right away. plugged in my mac obd2 reader and got codes p1519 , p0325 , p1175. i looked up all these codes and know what they mean. but does anyone know, or have had experience with the similar codes all at once. p1519= cam position actuator , p0325= knock sensor , p1175= fuel trim actuator. just tring to figure out what needs to be done or changed. my car always had the vanos noise. now its just a little louder. sound seems to be coming from the passenger side. thanks for your help / knowledge in advance

2000 740I SPORT

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#2 (permalink) Old 01-16-2012, 12:40 AM
OMFG another one!?
 
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Are you using a good winter oil?

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#3 (permalink) Old 01-16-2012, 08:45 AM
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honestly, i dont know what is in there since i just bought the car. but i do know it is full synthetic. last oil change was done by a reputable local indy. he is a certified bmw tech. i know this by the sticker on the windsheild. but it isnt due for another 1900mi. should there be a different weight. and would this cause the car to run rich and knock? thank you.

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#4 (permalink) Old 01-16-2012, 12:53 PM
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Mine does it to be honest, but I know it's the oil (which I need to change as a matter of urgency LOL)...


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#5 (permalink) Old 01-16-2012, 01:08 PM
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ok update. drove car for 30min. hooked up code reader. getting 6 codes. cps actuator bank 1, multiple misfire cyl 1, 2, 4 and knock sensor.

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#6 (permalink) Old 01-18-2012, 01:05 PM
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any update on this story?
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#7 (permalink) Old 01-18-2012, 06:15 PM
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Okay Misfires are ignitions coils thats are bad, if you chnage them out also change the plugs... As far as oil I would ask my person that chnaged the oil what weight was used, also double check the oil level.
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#8 (permalink) Old 05-23-2012, 10:59 PM
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I had the same problem. It's your front intake gasket... See item 11 below....

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