We've had this problem crop up before on this site regarding the insignia diesels . Is this an eco flex model ?

 

No mines a cdti sri 160

 

Ok , we've had this before . I keep thinking it was to do with some camshaft gearing failing but i may be off track . Andyl or igaz may remember .

 

Thanks for the reply. Hope someone can help me as im lost what to check

 

I tend to feel the same "shutter" at low rpms as well. It doesnt last long for me. I just assumed it was the gearing. I have the 2.0t for the record.

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Could it be the egr valve? I only do short journeys

 

I guess it could. It generally causes rough idle or misfire so i wouldn't see why not.

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Ive read up on google tho that if it was the egr it would throw a fault code and mines clear. Also ive noticed sometime when i put the gas pedal dow ita seema reallyslow responsive

 

How much of a leak did the PAS pipe suffer from, did it make an unholy mess? Was it the normal pipe from PAS pump down to steering rack? Thinking out loud as to if power steering fluid might've got where it shouldn't.

Nick.

 

Yes thats the pipe and yeah made a real mess on the side of the engine.

 

Just trying to think if there is a link - based on it happening a similar time. So possible oil contamination around that area.? Highly unlikely oil would've gotten into the inside of connectors such as air flow meter but worth checking anyway. Is main air intake pipe from air filter housing to turbo fitted back correctly.? (has to be removed to access top union on that pipe). If airflow meter was off/exposed, nothing contaminated that at point of repair.?

Just spit-balling a few ideas that might be worth a check.

Nick.

 

Funny you say that as ive not checked the maf yet. Gonna check it friday. There is a small amount of oil as it happens in the picture attached. In the centre pipe that go from intercooler to side of the engine

 

You'll always get a minor amount of oil 'inside' those boost pipes due to the engine breather system recirculating into the intake, might not necessarily be related to the PAS fluid - sometimes the seals can weep under pressure and cause the misting on the outside of the hoses like you've got - whether it'd cause a running issue though i'm not so sure. It'd generally be a hose replacement to fix as the seals come with the hose, a remove, clean up, re-position seal and a thin application of grease around the seal lip may help too.

Those hoses are on the other side of the engine, that main rubber boost hose leading down from that metal clip - I've seen lots split before - normally to the point of causing huge drop in boost and EML though, but still worth noting.

Nick.

 

Just an update. Ive cleaned the maf and noticed some oil in turbo housing that looks like its coming from a hose that goes over the engine to a sensor thats slots on the plastic housing next to the turbo. Only small amount. Is that normal?

 

Normal. As long as the oil isn't excessive (which it doesn't look like it is).

That's the breather pipe that allows the crankcase pressure to get released back into the inlet tract, there is an oil separator down the back of the engine that allows oil to return to the sump, but as the crankcase gasses travel up the pipe it always brings marginal oil with it.

Nick.

 

When i go through the gears the engine sometimes judders around 2000 rpm.

Does it only happen when you change gear?

Ok , we've had this before . I keep thinking it was to do with some camshaft gearing failing but i may be off track . Andyl or igaz may remember .

Nope, can't remember

Edit - you thinking of this Fred?

http://www.vauxhallownersnetwork.co.uk/index.php?posts/2847890/

 

Does it only happen when you change gear?



Nope, can't remember

Edit - you thinking of this Fred?

http://www.vauxhallownersnetwork.co.uk/index.php?posts/2847890/

No not that engine , it was a Ecoflex diesel insignia.

 

Here's one of my pipe does this look normal I haven't cleaned it for months really am tempted to give egr clean it's bloody been then for 190k and not clogged up but at same time don't want to fiddle as from past experince if it's not broken don't fix it

 

View attachment 15504 Here's one of my pipe does this look normal I haven't cleaned it for months really am tempted to give egr clean it's bloody been then for 190k and not clogged up but at same time don't want to fiddle as from past experince if it's not broken don't fix it

Yes , leave well alone , if she's running sweet at 190k why start meddling ? Taxis don't tend to suffer EGR valve problems because of the nature of the job , the cars being used everyday & once up to temperature the engines warm all day , plus not forgetting the odd longer run during the shift , our Skoda A4 estates have all gone past 400,000 miles with a couple nearly at 500,000 now , no EGR problems ever on these 1.9 tdi engined cars .

 

Wow 190k, that's nicely worn in.! That could open up a lot more to check based on mileage, could be the first signs of EGR intermittently sticking just enough to give a hesitation, carbon buildup around inlet, turbo VNT nozzles sticking perhaps.? They're all not overly common things in the insignia but mileage could be a factor here.

Nick.

 

I'm surprised the crankshaft hasn't worn out yet at 190k

 

What are the issues etc costs when it does ? Want to keep on top of things now

 

Going back to the original post i would clean the MAP sensor, its located on the back of the inlet manifold, roughly in the middle.

 

Going back to the original post i would clean the MAP sensor, its located on the back of the inlet manifold, roughly in the middle.

Yeah ive done that and it runs fine for a few days then starts again with the judder and hesitation. Ive narrowed it down to oil coming outta the breather pipe and being sucked towards the air filter over the maf. Ive looked into getting a oil catch tank to go in between. That should sort it due to me doing short journeys

 

Shouldn't need an oil catch tank , if it needed one it would have one fitted when the car was being made .

 

Yes but was they designed to do 1mile journeys twice a day? Mines a 2009 cdti diesel

 

That's all your doing , nothing more ?

 

Most days just to work and back so probably about 4 miles a dag in today then about 10 and the weekend.
So yeah you say it doesnt need one so how can i stop the air from the beather pipe running into the air intake pipe and covering the maf if i dont need a catch tank?

 

What made you buy the diesel engined insignia , was your milage higher at the time ?

 

You didn't answer my question. How you invision i stop the oil from the breather pipe as you say i dont need a catch can

 

Get a petrol. Diesels don't work well with short journeys.

 

Sounds like your engine could be suffering from blow by hence the oil in the breather pipes , probably due to the excess cold running as your not getting up to temperature.

 

Yeah i agree. My idea was to fit a catch can to stop the oil (small amount) going back up the air pipe towards the air filter.