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11-11-2009, 10:13 PM
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#1
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Techno Viking
Join Date: May 2008
Location: Scarborough
Posts: 1,776
Car: M3, 335i, 325e
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just finished m50 manifold
Hey guys, I just finished my M50 manifold swap today. I Started the car up and everything was perfect except for a slightly louder top end ticking. Is this due the the engine running lean until it adapts to the new air flow? Also, i got a check engine light as soon as i got on the highway. my brother said it could be the MAF due to the new airflow. any help would be appreciated
thanks,
steve
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11-11-2009, 11:07 PM
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#2
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op sucks cock
Join Date: Jun 2004
Location: T.
Posts: 17,925
Car: E46 M3, YZF-R6
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let everything adjust, see how it is tomorrow
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11-11-2009, 11:13 PM
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#3
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Techno Viking
Join Date: May 2008
Location: Scarborough
Posts: 1,776
Car: M3, 335i, 325e
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hopefully thats why the CEL came on. As for the ticking, I think its the injectors. Apparently they are loud as hell without a fuel rail cover on. I'll update this tomorrow.
Quote:
Originally Posted by propr'one
let everything adjust, see how it is tomorrow
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11-11-2009, 11:45 PM
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#4
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3rd Gear Member
Join Date: Feb 2006
Location: kitchener
Posts: 575
Car: dinan e36
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the ticking is normal, there should be no CEL, scan it, most likely a vaccum leak
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11-11-2009, 11:57 PM
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#5
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MaXsponsor
Join Date: Feb 2002
Location: Ontario
Posts: 15,628
Car: OE///M
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Quote:
Originally Posted by blk325i
the ticking is normal, there should be no CEL, scan it, most likely a vaccum leak
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+1 on the vacume leak! They can be very sensative to vacume leaks, triggering the CEL. Reset the light and see if it comes back.
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11-12-2009, 12:01 AM
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#6
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Techno Viking
Join Date: May 2008
Location: Scarborough
Posts: 1,776
Car: M3, 335i, 325e
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i guess its time to invest in the peak engine tool 
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11-12-2009, 01:36 AM
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#7
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5th Gear Member
Join Date: Oct 2009
Location: Toronto, Ontario, Canada
Posts: 936
Car: e36 328is S/C'd
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Was it an easy swap? did u use a kit or found the parts urself?
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11-12-2009, 05:29 PM
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#8
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Techno Viking
Join Date: May 2008
Location: Scarborough
Posts: 1,776
Car: M3, 335i, 325e
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i bought the manifold from eurostyle and i used eric's kit from m50manifold.com. the install is very straight forward. the biggest problem i had was the manifold bolt in the back. labelling all the harnesses helps a ton. it took me about 7 hours by myself.
do you think a cracked/ripped intake boot would cause the CEL? I used the original one which did have some tearing. I'm going to BMW tomorrow to buy a new one.
Last edited by Steve30; 11-12-2009 at 07:34 PM.
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11-13-2009, 05:21 PM
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#9
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5th Gear Member
Join Date: Oct 2009
Location: Toronto, Ontario, Canada
Posts: 936
Car: e36 328is S/C'd
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I dont think it Should. Do you know anyone that can tell u the code?
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11-13-2009, 05:37 PM
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#10
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Techno Viking
Join Date: May 2008
Location: Scarborough
Posts: 1,776
Car: M3, 335i, 325e
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My friends brother does have a code reader but I haven't had a chance to talk to him yet. I read that any leak post-MFA would throw off the CEL and cause the engine to run lean. I really dont see what else it could be. Every vacuum line is in place.
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11-13-2009, 09:01 PM
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#11
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6th Gear Member
Join Date: Feb 2007
Location: Pickering
Posts: 2,902
Car: 87,325IS - E36 M3
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a cracked intake boot after the air flow meter is a vaccum leak and will through a lean mixture code
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11-13-2009, 09:52 PM
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#12
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Techno Viking
Join Date: May 2008
Location: Scarborough
Posts: 1,776
Car: M3, 335i, 325e
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I thought so. I ordered the boot from bmw but it wont be in until monday. Will I still need to have the CEL reset with the tool or will it correct itself?
Quote:
Originally Posted by BmW1819
a cracked intake boot after the air flow meter is a vaccum leak and will through a lean mixture code
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