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BLT engine EGR, ASV, and inlet removal....whats needed

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Hello everyone.

Just collected an 06 vrs with a BLT engine and got a engine warning light come on. Scanned it and revealed to be EGR insufficient flow so I am suspecting a clogged up mess. The car is a low miler with little distance between previous MOT's so I suspect short distance driving causing a build up. I know from a search that this topic has a lot of coverage but I need to know exactly what gaskets/Orings are needed for a full inlet, egr, and asv cleaning as going to tackle Sunday and can't afford any down time....I looked on vagcat as always used their exploded diagrams for this type of query in the past but it does not cover the BLT engine :(

Obviously inlet gasket but anything else?

I know people will say egr delete etc but I am not mapping/modifying the car.

Thanks in advance....

I will make a comprehensive guide when I do it.

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This page here claims to be a description of Fabia 2006 AXR and BLT engines' EGR set-ups.   A few gasket/o-ring part numbers there for you, if you want to guard against any not being in good enough condition to re-use.

  • Author

Perfect response....

Phoned skoda and ordered the bits I need. Wish I had more time to shop around as the O rings were ridiculously priced. Anyway at least I have the right bits.

Thanks again.

  • Author

Parts collected from skoda after work. All ready for dismantle and cleaning this weekend all being well.

One more question though. Removing the inlet manifold from a BLT engine. Will I have to do anything with/remove the egr cooler. I don't know what this attachs to or what it may be in the way of whilst performing this job.

Anyone done this on a BLT engine?

Before you start stripping it all down to clean it, check to see if it has had the egr gasket BLT 'stutter' fix done as it could be this.

The BLT suffers from a stutter at about 1800rpm, there was a dealer fix that involved fitting a EGR gasket with a Ø9mm hole.

This hole is too small really and can cause the engine light fault code you have mentioned above. If you remove the Ø9mm hole gasket, re-drill to approx Ø11.5mm and re-fit it should fix your problem, assuming this is your problem.

I did this to mine 3 years ago and have never had the fault since.

 

If you have a search on here for BLT stutter you should find a lot more info.

Edited by Bogwoppit

I didn't have an EML but did have a slight stutter in higher gears at 1800, I fitted that gasket drilled out to 12mm,I also turned up the fresh air in the adaptation with vcds. I now have the slightest blip of a stutter very occasionally (which I can just about live with). More importantly the car revs more freely and pulls a bit better and I think mpg has improved by a couple although that could be a coincidence with me getting more used to the car.

I want to egr delete but also would like to keep the car standard so these steps are a happy compromise for now.

  • Author

Thanks guys. Where is this EGR gasket with a 9mm hole located?

Most put it in the end of the egr pipe near the airbox, but some have put it at the other end I believe.

Mine was in the location near the airbox. If you do strip it all down and clean it up and wish to keep it clean afterwards you could do the 'elephant hose' mod instead of the egr delete.

My car is completely standard bar the elephant hose mod, no need to map out egr fault/egr delete.

Edited by Bogwoppit

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Yeah I read about the elephant mod. Might give it a whirl afterwards.

Basically only had the car a week. Not noticed any major stuttering yet I don't know what I'm looking out for (used to older vw's) but I have an intermittent cel for insufficient egr flow. Not down on power, no limp mode.

I want the car to be in its best shape so assumed egr probably clogged up.

For me the stutter occured when reapplying light throttle after being off gas on the initial movement of the pedal, bang on 1800rpm as mentioned. Feels a bit misfirey but not as severe, I believe some had it quite bad. Mine wasnt terrible, just a bit annoying

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Well in my short experience driving the car I have not noticed this. Just the check engine light. Where do I buy this 9mm gasket if I need one? Annoying as I only just visited the parts place and they were a pain in the ass to get to :)

I don't know if to bother stripping car down this weekend without that gasket. It would be annoying to have to put it all back to redo again next week.

  • Author

Brilliant!

Gonna service the car this weekend and I will hopefully get chance to get a look at these parts. EGR cleaning is easy enough.

Just no idea with taking off the inlet on a BLT

I didn't need to take the inlet manifold off, just cleaned the EGR and ASV, fitted the smaller gasket which improved the stutter and throttle response a little, but not enough (12mm), so I've just had the EGR mapped out and it has completely solved the problem. All the bits are visually still in place.

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Thanks for that mate. I'll give the cleaning a go and see what's what when I get it apart. It's the newest car I've owned and seems so plush compared to my g40's so I don't notice the stutter but I'll take it for a spin later and see.

mine did it mainly in 3rd and 4th using light throttle, or downchange from 4th to 3rd when you drop to cca 1600rpm...apply light throttle, reach 1800 and booom stutter and smoke

If you drive at 30 in a 30 zone in 3rd or 40 in a 40 zone in 4th gear is will be obvious that the car stutters. They all did it, the gasket mod was a bodge that Skoda no longer offers (they used to do it for free) so it's entirely feasible that your car does have the gasket mod in place already.

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SORTED!

Feel like a real plum.

So I stripped of asv and egr which was easy as pie. All clean inside. Slight build up on the flap in the asv but nothing bad at all. Inlet has also blatantly been off for a refresh in the past. EGR had obviously been cleaned. So I cleaned everything up again (not the inlet as was unnecessary as was spotless). Replaced all gaskets and o rings and started to put back together thinking something must be broken or faulty.

Checking everything over as putting back together and followed all vacuum hoses.... There it was. Vacuum hose had not been put back onto the nipple on the air box. Car had a new clutch when I bought it so can only assume they had just missed this last pipe on reassembly. Easy done and easyily sorted.

Serviced car and all is well.

Just remember to check the simple things first.....I didn't and assumed a bigger job required.

Just thought I would conclude thread with an outcome as so many threads never include the resolution.

At least you know all is good back there now!

 

Plus, no harm in getting stuff apart to check whilst you're there

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SORTED!

Feel like a real plum.

So I stripped of asv and egr which was easy as pie. All clean inside. Slight build up on the flap in the asv but nothing bad at all. Inlet has also blatantly been off for a refresh in the past. EGR had obviously been cleaned. So I cleaned everything up again (not the inlet as was unnecessary as was spotless). Replaced all gaskets and o rings and started to put back together thinking something must be broken or faulty.

Checking everything over as putting back together and followed all vacuum hoses.... There it was. Vacuum hose had not been put back onto the nipple on the air box. Car had a new clutch when I bought it so can only assume they had just missed this last pipe on reassembly. Easy done and easyily sorted.

Serviced car and all is well.

Just remember to check the simple things first.....I didn't and assumed a bigger job required.

Just thought I would conclude thread with an outcome as so many threads never include the resolution.

I'm struggling to understand how this, as described, would explain your fault.  When you say air box, do you mean vacuum box (on top of suspension turret)? An air hose going to the airbox where the air filter lives would make no significant functional difference if disconnected, it would just suck in 'unclean' air instead of filtered air, wouldn't it?

  • Author

I thought exactly the same when it was unattached that end. I aslo checked all the hoses vacuum box end. All I know is that all is reattached and I have done 400 miles and no light or error codes have come back. I did clean the bottom of the egr which had some carbon build up. Just didn't seem enough of a build up to cause a problem.

End of the day the issue is fixed. Vacuum hoses all checked both ends, egr and asv cleaned, refitted and no light. So hopefully sorted it.

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