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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, Nov-15-2018, 08:51:23 AM   #31
Bullbar
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Default Re: HELP 04 M3 ticking under partial load/blip the throttle

Do a leak down test and that's pretty conclusive. They often go between 5&6 and 1&2. M3 rarely blows the gasket into the water jackets so all the traditional overheating, losing coolant, water in the oil etc doesn't apply. Check and see if your temperature gauge is reading a tiny (just a little over half but not hot) bit above average as that's often a symptom.
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Old Thu, Nov-15-2018, 09:37:18 AM   #32
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Default Re: HELP 04 M3 ticking under partial load/blip the throttle

Also Bezugo, how many miles/ kilometres has your car done? Head gaskets in these things go anywhere between 190000 and 230000 km. Approx 110-130 miles. It's amazing how predictable it is. I noticed on one of your posts you said it wasn't running hot but if you look closely it may be half a needle width higher than usual. Unlike normal e46's M3 gauges are actually pretty accurate and will show even a slight increase in temperature. Once confirmed you can almost always get away with a light head skim and gasket replacement. Occasionally if it's been left too long you can damage the block but its rare. If you have a friendly shop that will let you supply your own parts you can save a lot. FCP Euro is a great source. While you are in there check the vanos bolts (on the end of the cams) they back out and there is an updated version. Also, check the vanos hub, there's two holes that are a loose fit and slog out causing the vanos tabs to break off. Also check the upper timing chain tensioner that wears on the end and will snap off (but you won't even know it has usually). There is an upgraded replacement available from Besian. None of these things cost a lot to replace once your in there as you have to pull it all apart anyhow. The last thing is a valve shim adjustment as you will have it apart so you may as well sort that also. It's not cheap but you will be back in love with your M3 after its done
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Old Fri, Nov-16-2018, 02:01:52 PM   #33
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Default Re: HELP 04 M3 ticking under partial load/blip the throttle

Having failed the compression test i'm confident that any issue will result in the head coming off, so no need for any more testing.

Next Wednesday it's going to the shop and all of those parts have been ordered.

Headgasket and a full gasket kit for the head.
Sparkplugs
Upper chain tensioner
Vanos bolts or a complete vanos rebuild if necessary (although my vanos seems to be perfect so far)
Valve adjustment
Valves will be "rotated" to insure best possible seal
Complete decarbonization of the head and leak tested.
Light skimming of the head which we hope won't be necessary, but the tests will verify that when it's apart.
New PCV valve oring or new valve if required (it's leaking a bit)
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Old Fri, Nov-16-2018, 02:07:26 PM   #34
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Default Re: HELP 04 M3 ticking under partial load/blip the throttle

Would i be correct to expect a bump in power after correcting a gasket leak?

What about the head skimming? Won't it increase compression?

One would suppose PCP Euro to be a good bet for someone living in Europe... but no.
They're based in the US and the shipping costs and import taxes to Europe are enormous.
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Old Fri, Nov-16-2018, 08:52:15 PM   #35
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Default Re: HELP 04 M3 ticking under partial load/blip the throttle

FCP is still cheaper than most to Australia (where I am) but we get ripped off so badly its a joke. No idea what they do over there but it sounds like you are the same! I envy the guys in the States, everything is so cheap..... You will find a small bump in power but it should just run a whole lot smoother and feel nicer. It sort of tightens it up is the best way I can describe it, feels a little more responsive etc. You might be lucky and not have to do a skim perhaps but the increase in compression is very small and shouldn't affect anything. You can get a series of thicker head gaskets to compensate if you need to take more off, a lot of the supercharged guys go that way but it most likely won't be needed. The BMW quotes time rate is around 19 hours (from memory) for the job. Also (you probably know already) don't forget to get new head bolts, they are a one time only deal. The killer is setting up the timing, removing the cams without damaging them etc. The actual head gasket/skimming etc is the easy bit. Good luck and as J. Beez said, it sounds like a lot but it's not that bad. If your mechanic knows his way around the S54 it will be fine.
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Old Sun, Nov-18-2018, 12:23:28 AM   #36
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Default Re: HELP 04 M3 ticking under partial load/blip the throttle

Quote:
Originally Posted by Bezugo View Post
Would i be correct to expect a bump in power after correcting a gasket leak?

What about the head skimming? Won't it increase compression?

One would suppose PCP Euro to be a good bet for someone living in Europe... but no.
They're based in the US and the shipping costs and import taxes to Europe are enormous.
You'll notice a bit more pep, yes, as the last 2 cylinders will actually be holding pressure independently per their firing order.

Good luck. Hope you get it back soon.

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All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.

Happy to help with VANOS or any other DIY job around NorCal
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Old Thu, Dec-06-2018, 07:18:53 PM   #37
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Default Re: HELP 04 M3 ticking under partial load/blip the throttle

Ok.... bad news

The car is at the shop and only last monday they got around to removing the head.



We thought the head gasket would only be broken between cylinders 5 and 6, bu no. Its broken between all cylinders.

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Old Thu, Dec-06-2018, 07:26:37 PM   #38
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Default Re: HELP 04 M3 ticking under partial load/blip the throttle

If that was all i would be very happy right now, but the block has also been affected. It has very slight indents where the gasket was broken and also tappers slightly in those spots.




Bad enough right? No

The vanos exhaust hub tabs are broken. well.. only one, but it was in place. Never fell out.




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Old Thu, Dec-06-2018, 07:27:50 PM   #39
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Default Re: HELP 04 M3 ticking under partial load/blip the throttle

Wow for a car with so few miles (relatively), that's a surprising outcome. Do you know if it's ever been overheated?

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All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.

Happy to help with VANOS or any other DIY job around NorCal
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Old Thu, Dec-06-2018, 07:36:27 PM   #40
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Default Re: HELP 04 M3 ticking under partial load/blip the throttle

Quote:
Originally Posted by mrgizmo04 View Post
Wow for a car with so few miles (relatively), that's a surprising outcome. Do you know if it's ever been overheated?

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I've come across a couple threads that mention head gasket problems are relatively common in Europe as opposed to US models. Something relating to euro models running leaner for some reason?
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Discussing HELP 04 M3 ticking under partial load/blip the throttle 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)