re: EGR valve - remove, clean & modify.
Thanks NumanR
I guess it does matter which end you put them afterall then
Thanks NumanR
I guess it does matter which end you put them afterall then
Technical EGR valve - remove, clean & modify.
- Thread starter shiningliao
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Technical EGR valve - remove, clean & modify.
Just fitted the gasket to mine
I only used one sealing gasket (not both) as it was darn difficult getting all 3 to line up properly I placed the single sealing gasket facing the corrugated pipe and it seems to have sealed OK.
Unfortunately, I can't comment on any change since the engine's radically improved anyway since having the boost issue sorted :devil:
I only used one sealing gasket (not both) as it was darn difficult getting all 3 to line up properly
I placed the single sealing gasket facing the corrugated pipe and it seems to have sealed OK.Unfortunately, I can't comment on any change since the engine's radically improved anyway since having the boost issue sorted :devil:
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Argo/Abz,
Any update of performance/mpg/drivability for this little mod, i'm thinking of ordering them this week?
UPDATE:
Just ordered them, so will be fitting them later this week weather permitting and i've managed to clean the EGR, LOL
Any update of performance/mpg/drivability for this little mod, i'm thinking of ordering them this week?
UPDATE:
Just ordered them, so will be fitting them later this week weather permitting and i've managed to clean the EGR, LOL
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so lemme get this right? you use this new valve thing with the 3 small holes rather than a complete block using a tin can as first advised?
You only block the EGR for diagnostic reasons (to check if it's stuck open mainly).
The new gasket is a permanent mod which may provide improvements as suggested by NumanR (it's also of course entirely legal
)Can't comment myself much as mine was quite smooth to start with and haven't done enough mileage to notice that much change yet.
so are they fitted between egr and pipe to throttle or throttle and pipe to egr?
Here are those gaskets NumanR mentioned.
From the shape it must fit one of the flanges on the ends of the corrugated tube which connects between EGR and stop valve. Would imagine it makes little difference which end you fit it to.
The black gaskets which are fitted both sides of this new gasket look to me to be identical to the standard gasket. It that's the case then strictly speaking you only need one as the other is already in place.
Costs:
New Gasket = £11.29
Original Gasket = £1.68 (x2)
argo, on the two outside gaskets they have a lip on the inside. which way are these supposed to be fitted? lip out toward the pipe or toward the throttle body/egr?
I fitted mine with the lip facing the corrugated tube as it seemed logical to me (could easily be wrong) but you'll notice I only used one in the end and fitted this on the corrugated tube side.
It certainly runs pretty good as it is
The special gasket should be fitted next to the throttle body (stop valve) i.e. NOT next to the EGR valve.
It certainly runs pretty good as it is
The special gasket should be fitted next to the throttle body (stop valve) i.e. NOT next to the EGR valve.
D4nny8oy
Established member
Who told you that? Fiat documentation says to place it next to the EGR-
The lip position isn't too important, Fiat make no mention of it in the manuals, it's to provide more of a surface to clamp against.
NumanR (post #26)Who told you that? Fiat documentation says to place it next to the EGR-
If that really is straight out of the manual then it looks like I'll have the bonnet open this weekend again (and a few other people too I guess
)Thanks for pointing out the error
D4nny8oy
Established member
I believe he was saying it goes the throttle chamber side (just after the EGR), rather than the heat exchanger side (before the EGR).
stilosporting- if you're talking about the small, thin circular gasket on the heat exchanger side of the corrugated pipe, then I believe you're right in saying it only comes with the complete heat exchanger.
stilosporting- if you're talking about the small, thin circular gasket on the heat exchanger side of the corrugated pipe, then I believe you're right in saying it only comes with the complete heat exchanger.
I'm pretty certain you couldn't fit it on the exhaust side anyway (as different size of gasket used?) but NumanR does make an interesting description of the process:
"the gaskets are put at the throttle chamber end, the holes cause the gases to mix better in the chamber rather than having a large amount of exhaust gas suddenly dumped in the chamber when the valve opens"
I assumed this was a description of the gases (exhaust/fresh air) being mixed within the throttle body (stop valve) with the three holes causing turbulence to the exhaust gases as they mix with air coming from the intercooler.
At the end of the day, it doesn't matter who provides the info or if the manual is wrong or whatever - we just want to be certain of the best place to fit the gasket
D4nny8oy
Established member
The standard EGR gaskets are used throughout the system (item 2 in the pic)- at both ends of the corrugated pipe between the EGR and throttle body, at the pipe that mounts to the underside of the EGR, and where the EGR take-off is on the exhaust manifold.
In theory it should make little difference which end it's fitted (EGR or throttle body) as the connecting pipe is so short, but we both agreed the narrow holes help to keep the gas flowing faster through the EGR valve and therefore help reduce the carbon deposits inside, so fitting it nearest the EGR makes sense.
NumanR
Established member
I cant even remember where I put my slippers let alone where i fitted the gasket lol. Now where did I put those slippers?
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Well I fitted this modded gasket today with two new sealing gaskets and it has made my car run worse.
No power until about 3000rpm then goes like the horses, i'll be removing it again tomorrow
For info my car was running OK but had a slight flutter on light throttle at 3250rpm ish, i was hoping this modded gasket might sort that or just generally improve the power delivery but obviously I was wrong.
Assuming everything returns to normal when removed i'll have a gasket available for anyone whos interested.
No power until about 3000rpm then goes like the horses, i'll be removing it again tomorrow
For info my car was running OK but had a slight flutter on light throttle at 3250rpm ish, i was hoping this modded gasket might sort that or just generally improve the power delivery but obviously I was wrong.
Assuming everything returns to normal when removed i'll have a gasket available for anyone whos interested.
D4nny8oy
Established member
Well I fitted this modded gasket today with two new sealing gaskets and it has made my car run worse.
No power until about 3000rpm then goes like the horses, i'll be removing it again tomorrow
TBH that's the classic symptom of an EGR valve sticking open slightly.
The modded gaskets can only do their job if the EGR is operating correctly. I'd recommend removing the gaskets and blocking it fully with a plate and retesting. If the performance returns, then either clean the valve or replace it, then refit the mod gaskets.
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Thanks for the advice danny, I removed and cleaned the EGR valve and solenoid today, it was extreemly clogged up, lots of hard buts fell out when cleaned. Look at the state of it
All back together with modded gasket and working a treat now, all the remapped power is back better than ever
I also temp repaired a split in one a pipe that led from the item in the photo below (what is that item?) so that may have been the problem too?? maybe I disturbed that yesterday, anyhow it seems to be OK now (touchwood)
All back together with modded gasket and working a treat now, all the remapped power is back better than ever
I also temp repaired a split in one a pipe that led from the item in the photo below (what is that item?) so that may have been the problem too?? maybe I disturbed that yesterday, anyhow it seems to be OK now (touchwood)
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looking at the top picture i would say that the egr was the problem lol. good to hear all is working right now.
that picture at the bottom is the actuator for the flap in the throttle body (stop valve). it works on vacuum and wouldnt close properly if the vacuum was compromised. 100% certain it wouldnt cause hesitation.
that picture at the bottom is the actuator for the flap in the throttle body (stop valve). it works on vacuum and wouldnt close properly if the vacuum was compromised. 100% certain it wouldnt cause hesitation.
D4nny8oy
Established member
:yeahthat:
It's the flow shut off valve actuator. When the engine's switched-off the vacuum stored in the reservoir chamber on the back of the manifold is used to move the actuator and close a throttle butterfly on the inlet to help reduce shudder as the engine stops. After a few seconds it returns to the 'open' position where it stays during normal running.
It's the flow shut off valve actuator. When the engine's switched-off the vacuum stored in the reservoir chamber on the back of the manifold is used to move the actuator and close a throttle butterfly on the inlet to help reduce shudder as the engine stops. After a few seconds it returns to the 'open' position where it stays during normal running.
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