Evening guys very quick question my 40 is only putting 0.2 bar of boost out when it usually puts out atleast 1.2 uve checked for leaks and all is good but still very little boost anyone got any ideas plus the charger belt has plenty of tension aswell
Throttle-bypass butterfly (the recirc one, forget the proper name) stuck open?
Ah good thinking does needing the charger servicing make any difference
any of the pressure lines loose (to ecu etc)
or look in intercooler gauze, if there is any metal your charger has shat itself
Quote from: matthg40 on November 19, 2011, 10:54:08 PM
Ah good thinking does needing the charger servicing make any difference
not 1 bar of difference.
Scratching my head abit with this one
have you got a mechanical boost gauge?
Yes mate
Check your connection on the t-piece. My rubber sleeve that goes over the nylon pipe and connects to the t-piece had perished and split open.
Quote from: Jezza-7 on November 25, 2011, 10:23:05 AM
Check your connection on the t-piece. My rubber sleeve that goes over the nylon pipe and connects to the t-piece had perished and split open.
Stack unit per chance?
Mine did exactly the same
Yeah it was :D
Rang up stack and they dont sell them separately either. 2 tie wraps and some silicone did the job.
Which t piece are u talking about guys
The t-piece that some people will use to fit a boost gauge, you may or may not have one too depending on your setup
Usually found on the small pipe coming off the top of the fuel pressure regulator going to the main vacuum pipe coming off the throttle body.
That is all in good condition anymore ideas as I want my boost back :-(
have you checked the gauze in the intercooler (at bottom of charger to intercooler hose)
this happened to dk, his spat an apex seal.
Have you checked the charger to intercooler pipe? Mine split open and created a hole about the size of a 2p coin. Had boost but very little.
Can you hear any rushing of air when your driving as if there is a leak?
Where you live?
Yes u can hear a whoosh of air when my foots down and I'm in Leicester pal
How far is that from derby?
It sounds to me that your butterfly valve in the outlet of the t-piece is not closing properly.
Again i had a problem with boost when it just suddenly went from 12psi to 2 psi. Now on the throttle cable, where it sits in the bracket from the inlet manifold, there is a rubber bung around it and a little clip. Is your clip there? Mine snapped off causing the cable to become loose and it wouldn't shut the valve, not even 1/4 closed.
Check that. If that fails get someone to put their foot down on the accel and check to see how it operates and closes.
I'm junction 21 of the m1 matey is that all it could be then throttle body problem
The clip is presant mate in the cable
Yeah check to make sure the butterfly valve is closing fully.
If you can get it to my house this week I'll have a look for you. I'm at J23.
That would be Awsome if you could mate its doin my head right in
I'm in most of tomorrow and Friday. Busy on Saturday. PM me dude.