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Old 06-09-2012, 08:07 PM   #1
3rd Gear Member
Join Date: Sep 2005
Location: quebec
Posts: 487
M3 wont idle

hey guys just finished rebuilding my 97 M3 and now it won't start. it cranks then dies if I press the pedal it will stay alive but runs very poorly. I don't have any check engines except for the 02 after cats which are not plugged since the exhaust aint on yet. I'm thinking bad gas in tank the car hasn't ran since sept. 2011. anybody have an idea on what the issue could be? my next step is putting 40$ of 91 oct. in it and trying it again...but I'm sceptical.

help please!
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Old 06-18-2012, 07:59 PM   #2
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Vacuum hoses
Cayenne hunting!
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Old 06-18-2012, 08:38 PM   #3
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What did the rebuild consist of?
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Old 06-18-2012, 08:41 PM   #4
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Location: St. George, ON
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You put the motor back together yourself? ICV, MAF and vacuum hoses all hooked up?

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Old 06-18-2012, 08:52 PM   #5
Vtec just kicked in
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Originally Posted by 5style View Post
Vacuum hoses
I concur. check for vac leaks
-||Old Crayons||-
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Old 06-18-2012, 10:01 PM   #6
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cam sensor and knock sensor plugs swapped?
2007 BMW 328Xi Touring, 6 speed
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Old 06-20-2012, 10:15 AM   #7
220 Kph, E39 on Autobahn
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I would 3rd the vacuum leak, but I too would ask what did the rebuild consist of?
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Old 06-20-2012, 12:35 PM   #8
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I just had same problem on a 330, it was stuck ICV...
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