Lost all power after fitting manni.

[__B3NNY__]

it would sound blowing if not sealed. tractor sound

dv closed?
wastegate shut firm.

still zero psi??

no sounds perfectly normal bill,

I pulled the actuator rod towards me with the engine running like you said and it snapped back shut.

I`ve done the leak back test and the DV is working as it should so i guess that can be ruled out? How would i know if the DV was closed?

 

[ibizacupra]

if DV top small hose was rmeoved it would be closed and never open.
still 0psi tho? is that still the case?
something obstructing the turbo rotating?
something open venting all exhaust gas and or all boost... which is wastegate or DV... cant think what else would give 0psi, aside from pipe off/split somewhere

 

[warren_cox]

Is the TIP connected properly. My DV once blew off the tip and it looked like it was in but it was just sat on top of it. Check the bottom end of the TIP too.

Its not likely you've left any electrical sensors unplugged anywhere is it?

 

[__B3NNY__]

Yup still 0psi, The only time i removed the small vac hose on the nipple was after it stopped boosting.

Not sure how i would check if anything was obstructing the turbo? Wouldnt it have stopped boosting stright away and not a mile up the road if that was the case?

Would it be worth taking the end of the tip off and try moving the prepellors with my finger?

 

[__B3NNY__]

Coxw, I checked the tip this morning and it had slid off a little so i pushed it back on and re-tightend it.

I didnt unplug anything electrical to begin with, And as i have said previously it boosted fine for about a mile and then stopped boosting altogether

And still no codes on vag-com

 

[andygolf]

did you use all the old nuts and washers or replace with new ones.

 

[warren_cox]

Hmmm, strange one.

If, and I'm only plucking thought out of the air here, the manifold hadn't seated tight and there was a leak from around the manifold, what effect would this have on the engine Bill? This would effectively be the same as having an induction leak???

The car may have run OK initially, but as it got up to temperature the strains on the engine will have increased as it got up to temperature. The engine will build up its compression, and will exploit any gaps between the manifold / gasket / head.

Could this cause this kind of behaviour, or would the engine not run at all given this kind of scenario?

How painful is it to refit the old manifold in hours. I think its the only way to see if its the manifold at fault. Could you get hold of a new gasket for it before the automotive shops shut?

 

[__B3NNY__]

I have a gasket here as i used a new OEM one from the dealers when i fitted it, Bill stated above that if it wasnt sealed it would sound like a tractor and it sounds perfectly fine. To be honest i i`d re-fit the old manni as a last resort as it took a fair while and was a absolout pig to do.

Andy, i used new nuts and washers when i re-fitted it.

 

[m0rk]

or you've blown a hose?

 

[__B3NNY__]

I had a good look this morning m0rk and i couldnt see anything off at all.

Hoses checked,

Tip to turbo
All intercooler hoses
charge pipe connections
vac pipes on top of engine

There may have been a couple of nicks out of the tip but i think it`s just the blue casing on the outside thats effected and there only about 10mm long at best, enough maybe for a small boost leak but not 0psi surly?

 

[warren_cox]

Have you looked underneath / elsewhere to check all hoses are on. May not be the ones that you have touched recently that are the issue. I had a hairline crack in on of my DV pipes, didn't even look like a visible cut. Had to bend the pipes about to see it.

Did you say you'd checked for error codes?

Any chance it could be N75?

 

[__B3NNY__]

ive had a look around underneath and to the best of my knowledge it looks fine.

I`ve checked for codes with vag-com and nothing

i bypassed the N75 this morning using a bleed valve just to rule that out and there was no differance what so ever.

 

[andygolf]

did you use all the old nuts and washers or replace with new ones.

 

[warren_cox]

did you use all the old nuts and washers or replace with new ones.

In post 48 - he's used new ones

 

[__B3NNY__]

Andy, i used new nuts and washers when i re-fitted it.

......

 

[bgasmatt]

if it dont sound like a tractor manifold is not blowing. now evan if you took the actuator off the turbo a naturally asperated engine would be able to make 0 pressure on a boost gauge therefore 1st instints would say you have got a huge boost leak but if it was that big the car would bearly idel at all. the second thing is when you floor it can you evan here the turbo spalling up. if dv was open you would here that as well.

so can u here it spool up m8.

 

[__B3NNY__]

Nope no spool up sound what so ever.

and the car idels fine, when my charge pipe popped off before it just juddered and cut out and was pretty hard to get going again.

 

[pj1985]

Like Bill said 0psi means there is no pressure at all...not even actuator which means its either totally open or the turbo working at all. A boost leak from a pipe would give lower boost surely not none at all especially as he has checked all ones that could give major leaks?

 

[__B3NNY__]

with the engine running im able to pull the actuator rod towards me and then let go andit snaps shut, which means its closing correct? Which means its ok?

 

[pj1985]

DP is connected up ok yes benny? Hasnt unknowingly snapped anywhere?