Split pipe causing boost problems?

[nattman]

Hey guys, been a few weeks since Ive had the tubby out, moving house is not much fun. :frusty: Anyhoo, I had her out yesterday for a quick start up and to re-aquiant myself with the old girl. After having boost problems when I put her in the garage I havn't had much enthusiasm to do anything. Noticed that when it was idling I could hear a rush of air coming from somewhere. Traced it to a small foam type pipe running from the inlet manifold to the solid pipe that runs along the top of the rocker cover and into the intake pipe of the turbo. I think it may be some kind of breather. Anyway I plugged the gap with my finger and the revs dropped a few hundred rpm. The pipe is 'sucking' rather than blowing the air out so im not sure if this could be the cause of my no boost?
Maybe just clutching at straws here so I dont have to change the turbo? pmsl. What u guys think?

 

[danb]

It will be sucking at idle as the inlet manifold will be under vacuum then when you start to produce positive pressure, boost it will blow.
Could well be adding to your troubles. Get it fixed!

 

[nattman]

It will be sucking at idle as the inlet manifold will be under vacuum then when you start to produce positive pressure, boost it will blow.

THat never even occured to me. Thanks dan. Will defo get it sorted asap. Saves me having to replace the turbo. :biggrin1:

 

[danb]

THat never even occured to me. Thanks dan. Will defo get it sorted asap. Saves me having to replace the turbo. :biggrin1:

You hope!
Report back..

 

[nattman]

Lol yh. I will report back when I get the chance to mess with it again. Working for the next 7 days, oh the joys.

 

[Tony]

IIRC there a non return valve in the hose you are on about. It will propably have split.

 

[nattman]

I havnt got round to patching up the hole and trying it yet, sodding work has taken over at the moment. My best bet is to replace the pipe im guessing.......Hold on and I will get a pic up.....

---------- Post added at 06:54 PM ---------- Previous post was at 06:42 PM ----------

well I would put a pic up but photobucket doesn't want to play. Will sort it later.

 

[nattman]

This is the offending bugger. Havn't had the chance to sort it yet, too busy forking out an arm and a leg for carpets.

 

[danb]

This is the offending bugger. Havn't had the chance to sort it yet, too busy forking out an arm and a leg for carpets.

try some duck tape first lol

 

[Tony]

Just replace that with some silicon hose. Jobs a goodun. As a temp measure, do as Dan suggests, duck tape ftw.

 

[Andyquadra]

Just replace that with some silicon hose. Jobs a goodun. As a temp measure, do as Dan suggests, duck tape ftw.

Make sure the silicon hose doesn't get sucked flat! There is quite a large vacuum at times

 

[MakeEverything]

Make sure the silicon hose doesn't get sucked flat! There is quite a large vacuum at times

Cant beat a good flat hose suck....

ETA: When available of course..... :biggrin1:

 

[nattman]

Lol. Yh I was gona chuck some duck tape round it and take it a quick blat up the access road and see what happens. Will report back.

 

[-Jo-]

on Jon's car someone used a piece off copperpipe. Inventive, lol

 

[nattman]

Copper pipe? Bit soft when it comes to engine temperatures no? Lol. Anyhoo...just spent a few hrs fannying around in the garage, making a mess, annoying the neighbours and bravely clearing out the large amout of spiders that had taken root with the garden hose. (swear some of the buggers shouted c**t as I hosed em down.) So I blocked off the pipe with some gaffer and took it for a spin..no joy. Got back under the bonnet, got sidetracked removing the old thermostat and flushing the system, then whilst I was bleeding the coolant system I noticed the pipe leading to the top intercooler was loose, tightened it up and thought Id better check the rest...........pipe to the bottom intercooler had come off....how the hell I missed that I will never know. So after sheepishly refitting the intercooler pipes and making sure the rest were tight I took her for a blat and hey presto, we have boost again. Can't believe it, what I tool I must be to have missed such an obvious problem. Oh well, live and learn. So now Im back to where I was weeks ago, 1 step forwards 2 steps back. :lol:

 

[MakeEverything]

Copper pipe? Bit soft when it comes to engine temperatures no? Lol. Anyhoo...just spent a few hrs fannying around in the garage, making a mess, annoying the neighbours and bravely clearing out the large amout of spiders that had taken root with the garden hose. (swear some of the buggers shouted c**t as I hosed em down.) So I blocked off the pipe with some gaffer and took it for a spin..no joy. Got back under the bonnet, got sidetracked removing the old thermostat and flushing the system, then whilst I was bleeding the coolant system I noticed the pipe leading to the top intercooler was loose, tightened it up and thought Id better check the rest...........pipe to the bottom intercooler had come off....how the hell I missed that I will never know. So after sheepishly refitting the intercooler pipes and making sure the rest were tight I took her for a blat and hey presto, we have boost again. Can't believe it, what I tool I must be to have missed such an obvious problem. Oh well, live and learn. So now Im back to where I was weeks ago, 1 step forwards 2 steps back. :lol:

Just goes to show how easy it can be to fix a problem though.

Copper pipe has a higher melting temperature than ally, and is certanily less "Squishable" than rubber.

 

[Tony]

Well done. Some times its the basics that matter.

 

[Zxer]

Well done mate, sometimes it's just an easy job staring you in the face. Eg a yellow zip tie attaching the crank sensor to the steering rack

 

[danb]

Well done mate, sometimes it's just an easy job staring you in the face. Eg a yellow zip tie attaching the crank sensor to the steering rack

Fooking LOL!!!!