Technical EGR Blanking Question

[Snoo]

Hi there, I've bought an EGR blanking plate to diagnose a possible EGR fault. Can people who have one advise on the fitting?
Do I need to remove any gaskets when I fit the plate, or do I just sandwich between what is already there?

Thanks,
Snoo.

 

[Shadeyman]

If your only fitting the EGR blanking plate to diagnose a possible EGR fault a good seal is the most important thing or diagnosis will be difficult. Remove a gasket and replace it with the blanking plate making sure you have a good seal, perhaps use a small amount of gasket glue.

 

[Snoo]

If your only fitting the EGR blanking plate to diagnose a possible EGR fault a good seal is the most important thing or diagnosis will be difficult. Remove a gasket and replace it with the blanking plate making sure you have a good seal, perhaps use a small amount of gasket glue.

Thank you
If there is an improvement it will probably stay for a while whilst I weigh up my options.

 

[momoe]

I wouldn't use any sealant, if you're trying to diagnose a stuck open EGR then a purpose made blanking gasket will be perfectly ok to diagnose the problem, I'm assuming you may have an open EGR valve, hence the blanking plate.

Fiat use metal seals in as the EGR gets VERY hot and they don't need sealant.Exhaust sealant sets rock hard and is awkward to remove from seals if you subsequently decide to remove the blanking plate.

 

[Snoo]

Hiya.

I've looked at the thread for cleaning EGR as a guide for test blanking mine off. However the guide is for a later multijet engine and I have a 105JTD.
The blank I bought was for the later engine also and I can't see one for the earlier style. Has anyone blanked and earlier engine? I pulled the pipe off and it's a really nasty sooty mess in there...

Here is a pic. I'm believe the EGR is the rusty looking round thing middle bottom. I'll block it at the pipe top right.

 

[momoe]

I blanked mine with steel paint pot lid. Use one of the existing gaskets as a template for the outline and the hole position, I put it inbetween the existing gaskets and it worked fine - don't move the pipe any further than you have to to get the gaskets in and out.

This won't clear any ECU faults related to the EGR, only restoring function can do this by either cleaning or replacing.

 

[Snoo]

Thank you Momoe.

Well I blacked it off but sadly there is no difference. Is the 105JTD just gutless below the turbo? It feels like there is an elastic band on the throttle. Have owned a few diesels I do find it lacks any kind of torque low down.

 

[momoe]

JTD engine series aren't as torquey low down as some, however - try disconnecting the MAF as this can also affect performance - you should get an engine management light up but when the MAF is disconnected the ECU reverts to default settings,.
IF the performance improves, you can try cleaning but normally it's a new MAF and don't be tempted to go anything other than a Bosch.

 

[Snoo]

I've tried disconnecting the MAF (had one go on a VW Bora before). But no change (didn't even get a warning light). I think the MAF only starts to work higher up the rev range anyway.

 

[momoe]

Another common problem is a perished or split tube from the turbo to the boost valve sensor, 115 JTD engines have this, don't know if 105's do.
If you've got a smallish 6-8mm tube coming from the turbo, check it's airtight - any leaks completely ****** turbo operation and gutless is an understatement.