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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Mar-23-2017, 07:09:46 PM   #11
///MonkeyTech
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Default Re: Front End Motor Leak (not TCT)

check the timing chain guide bolt between the thermostat and the cyl head. You can take a screwdriver and push it to see if its loose. If it is, and youve never done a thermostat, now is the time. Dont forget the water pump
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Old Thu, Mar-23-2017, 09:26:17 PM   #12
BeyondM3
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Default Re: Front End Motor Leak (not TCT)

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Originally Posted by ///MonkeyTech View Post
check the timing chain guide bolt between the thermostat and the cyl head. You can take a screwdriver and push it to see if its loose. If it is, and youve never done a thermostat, now is the time. Dont forget the water pump
That's exactly what is loose. Thanks a million. Saved me from having to dump some dye in as I was debating that tonight.

Shame all of that has to come apart to tighten it back up....gonna look into doing it without removing so much....
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Old Thu, Mar-23-2017, 10:09:17 PM   #13
PITT M3 RR
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Default Re: Front End Motor Leak (not TCT)

Awesome - turned out OK
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Old Thu, Mar-23-2017, 11:31:25 PM   #14
BeyondM3
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Default Re: Front End Motor Leak (not TCT)

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Originally Posted by PITT M3 RR View Post
Not that I know of, but if you're worried, dye it, find the leak then drain fix and fill! In the long run, it'll all be for the best.

Use a little mirror up under the vanos too, check as best you can around the front cover.
So far so good, thanks for the input.

I just drained some coolant, removed the housing and tightened the bolt up. Now I just have to wait to get some more of that glorious blue BMW coolant.
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Discussing Front End Motor Leak (not TCT) in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)