whistling noise m reg 1994 2.7 td non intercooled

[trottster]

on acceleration i have a whistling noise from the engine but cant decide wether it is from the inlet or exhaust side if the engine  so perhaps i will have to strip off both sides to inspect the gasket ?
also at the back of the inlet manifold near the egr valve there appears to be what looks like a dump vale  or is it something else ????

[SWEETY]

As far as I know a dump valve was never fitted to these at the factory:roll:I've had a look at fitting one to my TDI & it will be a bit of a job because of the intercooler to turbo pipe being so short :evil:but one the earlier ones like yours someone may have done it :roll: :roll:I'm not sure on your whistling noise as some turbos do seam the make a noise where others don't, but I would check that all the turbo pipes are tight :D

[Terranosaurus]

Dump valve on a diesel - ashtray on a motorbike comes to mind.

[SWEETY]

Dump valve on a diesel - ashtray on a motorbike comes to mind.

There is on a Honda Goldwing ;) :lol: :lol: :lol:

[trottster]

definately a factory fit valve  just looks like a valve on its own screwed into the inlet manifold at the back  just wondered if that was leaking as it also feels under powered when towing uphill ??????
whats a clutch like to do with it on axle stands or is it a no no ??

[Whatmot]

diesels dont have dump valves: no butterfly valve in the throttle. of course you can fit one, but it wouldnt have any noticable improvements, just make the boy racers back off :lol:

the whistling is most probably the turbo spooling. its perfectly normal, mine does it too (2.7tdi). if you listen to any turbo tuned car, they all do it.

heres a good video

here

its of a couple of diesel tuned mercs. you can here the turbo whine (i think) at 1.10 and 1.24

[SWEETY]

the whistling is most probably the turbo spooling. its perfectly normal, mine does it too (2.7tdi). if you listen to any turbo tuned car, they all do it.

I can't hear my turbo, but i've heard others say the say about their 2.7TDI's :roll:

definately a factory fit valve  just looks like a valve on its own screwed into the inlet manifold at the back  just wondered if that was leaking as it also feels under powered when towing uphill ??????
whats a clutch like to do with it on axle stands or is it a no no ??

I'm wondering if the valve you are on about is an EGR valve as some were fitted with them where others were'nt & if it's playing up a bit it would drop your performance as would the mini filter in the fuel pump if it's dirty.As for the clutch i've heard it's a big job as you have to strip loads off to get the G/box out