MINI2

s33gav · Feb 11th, 2008, 07:42 PM

Hi All

I've got a 210 JCW with a few GTT mods, so it's pretty quick with lots of low down grunt. However, the last week or so it's just lost loads of low down surge, and feels very sluggish and slow. I've just had the belt changed so it's not that. I took it into BMW who ran some diagnostic checks but nothing showed up - they also said they checked this bypass valve and it was fine - although I'm weary about that as the technician didn't even know what it was called....

Anyway, after speaking to Rowland who said it sounded like it could be a BPV problem, I took a little look. I've never even seen one of these before, so I found out what to look for, and I think I've found it - but please tell me if I've got it wrong,

If you see the pics below, it doesn't look like it closed properly to me? The actual spring bit seems to work, and it moves when I blip the throttle, but from that pic can anyone tell me if it's closed?

It seems to stick a little, asI can move it further when I touch it. If you see pic 1, does that look closed? Pic two shows that the metal spring thing isn't touching the screw, there's a little gap (showed by arrow) - is this correct?

The strange thing is, when I put the Inter Cooler back on after fiddling with the BPV, it seems much better?!?!?

Anyone care to comment on my garbled message?

Thanks in advance

Gav

s33gav · Feb 12th, 2008, 09:46 AM

Anyone have any ideas? Can anyone confirm that is the BPV in the picture, and if so it's not fully closed?

Cheers
Gav

s33gav · Feb 12th, 2008, 08:53 PM

Anybody?!?!

steve11 · Feb 13th, 2008, 05:22 AM

Yes thats the bpv but the only way you can tell if its closing correctly is to remove it & check the butterfly off the car.
I have just done this & indeed mine was not closing correctly, however after adjusting it accordingly & refitting it i noticed very little difference.
Also if the bpv is not closing correctly it will have always been that way from new.
Sounds more to me like an intercooler rubber coupling wasn't attached correctly when you had the belt done & you have just rectified this by refitting it.

s33gav · Feb 13th, 2008, 07:00 AM

Thanks for the reply. I was wondering if the BPV has started sticking though?

The problem was happening before I had the belt removed, so the intercooler hadn't been touched. I think the car feels a lot better now but I'm not sure if it's 100%. I think I might ask the dealer to replace the BPV anyway as a first try - I'mjust worried about letting them spend endless time looking at it, whilst I'm paying for their time.

s33gav · Feb 13th, 2008, 01:09 PM

Just drove it and it's back to being slow

s33gav · Feb 19th, 2008, 01:29 PM

The problem was the bypass valve, wasn't closing properly. Replaced today and it's made a HUGE difference.

Feb 11th, 2008, 07:42 PM	#1
s33gav MINI2 Regular Join Date: Sep 2005 Local Time: 12:03 AM Posts: 134 Offline	Loss of boost/power on my JCW Hi All I've got a 210 JCW with a few GTT mods, so it's pretty quick with lots of low down grunt. However, the last week or so it's just lost loads of low down surge, and feels very sluggish and slow. I've just had the belt changed so it's not that. I took it into BMW who ran some diagnostic checks but nothing showed up - they also said they checked this bypass valve and it was fine - although I'm weary about that as the technician didn't even know what it was called.... Anyway, after speaking to Rowland who said it sounded like it could be a BPV problem, I took a little look. I've never even seen one of these before, so I found out what to look for, and I think I've found it - but please tell me if I've got it wrong, If you see the pics below, it doesn't look like it closed properly to me? The actual spring bit seems to work, and it moves when I blip the throttle, but from that pic can anyone tell me if it's closed? It seems to stick a little, asI can move it further when I touch it. If you see pic 1, does that look closed? Pic two shows that the metal spring thing isn't touching the screw, there's a little gap (showed by arrow) - is this correct? The strange thing is, when I put the Inter Cooler back on after fiddling with the BPV, it seems much better?!?!? Anyone care to comment on my garbled message? Thanks in advance Gav Attached Thumbnails

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Feb 12th, 2008, 09:46 AM	#2 (permalink)
s33gav MINI2 Regular Join Date: Sep 2005 Local Time: 12:03 AM Posts: 134 Offline	Anyone have any ideas? Can anyone confirm that is the BPV in the picture, and if so it's not fully closed? Cheers Gav

Feb 12th, 2008, 08:53 PM	#3 (permalink)
s33gav MINI2 Regular Join Date: Sep 2005 Local Time: 12:03 AM Posts: 134 Offline	Anybody?!?!

Feb 13th, 2008, 05:22 AM	#4 (permalink)
steve11 Mad Modder My Classifieds Join Date: Apr 2007 Location: Australia Local Time: 09:03 AM Posts: 340 Offline	Yes thats the bpv but the only way you can tell if its closing correctly is to remove it & check the butterfly off the car. I have just done this & indeed mine was not closing correctly, however after adjusting it accordingly & refitting it i noticed very little difference. Also if the bpv is not closing correctly it will have always been that way from new. Sounds more to me like an intercooler rubber coupling wasn't attached correctly when you had the belt done & you have just rectified this by refitting it.

Feb 13th, 2008, 07:00 AM	#5 (permalink)
s33gav MINI2 Regular Join Date: Sep 2005 Local Time: 12:03 AM Posts: 134 Offline	Thanks for the reply. I was wondering if the BPV has started sticking though? The problem was happening before I had the belt removed, so the intercooler hadn't been touched. I think the car feels a lot better now but I'm not sure if it's 100%. I think I might ask the dealer to replace the BPV anyway as a first try - I'mjust worried about letting them spend endless time looking at it, whilst I'm paying for their time.

Feb 13th, 2008, 01:09 PM	#6 (permalink)
s33gav MINI2 Regular Join Date: Sep 2005 Local Time: 12:03 AM Posts: 134 Offline	Just drove it and it's back to being slow

Feb 19th, 2008, 01:29 PM	#7 (permalink)
s33gav MINI2 Regular Join Date: Sep 2005 Local Time: 12:03 AM Posts: 134 Offline	The problem was the bypass valve, wasn't closing properly. Replaced today and it's made a HUGE difference.

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