’54 E46 320cd M-Sport (INLET MANIFOLD)

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Hey All,

Sorry to bother you all, but I just got my '54 E46 320cd 

M-Sport (123Kmls) serviced by (BMW Dealer) today. 

I mentioned to the mechanic today when I was handing it 

in that, I have been noticing that the car has been 

lacking in/not producing full power in all gears from 

about 2,000rpm as when you put the foot down & the rev 

hit approx 2,000/2,250rpm & the revs/power stops/slows 

down dramatically & it takes ages for the full 

power/turbo to kick in (if it does at all) as you can 

feel it holding back! 

The only way I have noticed to help with this is when it 

happens to release the accelerator fully & then to press 

it fully again & this seems to work most of the time!?!?

So the mechanic told me he would run the diagnostics on 

it & see what would show up & this is what he said. "the 

diagnostics shows that it is the 'Inlet-Manifold & Glow-

Plugs' & I need to change them all especially the Inlet-

Manifold ASAP (Total cost of �1,000) before it damages 

the engine. Is this possible???

Would removing the manifold & cleaning it just work??? or 

is there any chance it could be these VERY FAMOUS "Swirl-

Flaps" that's causing this problem???

Also, I don't see how the 'Glow-Plugs' could cause this 

as there has never been a problem starting the car, even 

in very cold weather like this winter & the mpg is still 

around 45/50mpg!

But if ye do think the Manifold at least needs to be 

replaced! Does anyone know where I can buy 1 & have a BMW 

Specialist in Ireland to replace it at a much better 

price than I was quoted!?!? 

All information/Guidance will be very much appreciated.

Thank you all very much in advance for your help in 

relation to this.

Regards,

MJ 

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MJ'sBM Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 04-April-2008 Location: Co. Mayo. Ireland Status: Offline Points: 15	Post Options Post Reply Quote MJ'sBM Report Post Thanks(0) Quote Reply Topic: ’54 E46 320cd M-Sport (INLET MANIFOLD) Posted: 17-June-2011 at 01:45
	Hey All, Sorry to bother you all, but I just got my '54 E46 320cd M-Sport (123Kmls) serviced by (BMW Dealer) today. I mentioned to the mechanic today when I was handing it in that, I have been noticing that the car has been lacking in/not producing full power in all gears from about 2,000rpm as when you put the foot down & the rev hit approx 2,000/2,250rpm & the revs/power stops/slows down dramatically & it takes ages for the full power/turbo to kick in (if it does at all) as you can feel it holding back! The only way I have noticed to help with this is when it happens to release the accelerator fully & then to press it fully again & this seems to work most of the time!?!? So the mechanic told me he would run the diagnostics on it & see what would show up & this is what he said. "the diagnostics shows that it is the 'Inlet-Manifold & Glow- Plugs' & I need to change them all especially the Inlet- Manifold ASAP (Total cost of �1,000) before it damages the engine. Is this possible??? Would removing the manifold & cleaning it just work??? or is there any chance it could be these VERY FAMOUS "Swirl- Flaps" that's causing this problem??? Also, I don't see how the 'Glow-Plugs' could cause this as there has never been a problem starting the car, even in very cold weather like this winter & the mpg is still around 45/50mpg! But if ye do think the Manifold at least needs to be replaced! Does anyone know where I can buy 1 & have a BMW Specialist in Ireland to replace it at a much better price than I was quoted!?!? All information/Guidance will be very much appreciated. Thank you all very much in advance for your help in relation to this. Regards, MJ

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bmwcare Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member I Joined: 02-June-2006 Location: Galway Status: Offline Points: 321	Post Options Post Reply Quote bmwcare Report Post Thanks(0) Quote Reply Posted: 17-June-2011 at 02:23
	1. Remove 'Swirl Flaps' - you do not need to renew manifold. Some dealers are now doing this, if not, then a good Indy is what you want. This is urgent. 2. Glow plugs cause smooth running issue when cold NOT power issue (but should be done with #1 as manifold must be removed to fit) 3. Get it diagnosed properly for power issue - can be many things - but highly, highly unlikely that you were given correct diagnosis. You were given a 'code read' - NOT a proper diagnostic! Kind Regards, E.
	BMW & Mercedes Specialist. Galway & Surrounding Areas. www.bmwcare.com www.mercedescare.com All BMW models covered including E60/E90/F01/F10 with flash programming/CIP/coding as required

Andrew Rolland Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Go away rain Joined: 19-August-2004 Location: Scotland Status: Offline Points: 6579	Post Options Post Reply Quote Andrew Rolland Report Post Thanks(0) Quote Reply Posted: 17-June-2011 at 08:20
	Swirl flaps are the DIEsel achilies heel. Get them removed before they write off the engine. Also try cleaning out the inlet manifold. Have a read here. Edited by Andrew Rolland
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jetsetwilly2000 Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member II Joined: 10-December-2003 Location: Cambridgeshire Status: Offline Points: 701	Post Options Post Reply Quote jetsetwilly2000 Report Post Thanks(0) Quote Reply Posted: 20-June-2011 at 09:57
	Yep, sounds like swirl flaps (tho I don't know that engine). The good news is they're actually quite cheap to blank off, just a fair amount of labour, and you shouldn't need to replace anything else, so don't despair! It is urgent tho - if they're sticking then I guess they might break off, and that really would bin your entire engine.
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