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Old 6th July 2008, 12:19   #46
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you gave him the required answer MM340. He wanted to know if gases are released from V1o and V2o. And if released, is it safe. You have mentioned that gases won't be released from either outs.

but what exactly is 2.. it should be connected to 3 right (for symmetry.. I'm technically a ZERO)
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Old 6th July 2008, 14:28   #47
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Quote:
Originally Posted by RedMM340 View Post
No it does not. I really do not understand.

No exhaust gas should ever be released in the engine bay.

Abhij, can you clarify since you said it first?
Thanks Gaurav

I get the idea dude...

When there is no vacuum in the valves, no gas gets released into the valve anyways so no question of it getting released in the bay. So that will not be a problem. To be extra safe anyway, I ll plug them, If the plugs dont pop out, we know no gases are being emitted.

there are only two issues left in my mind...

1) F.E. will decrease slightly, right?
2) Where the hell does hose #2 go? Will try and find that out and take pictures.


Btw, to plug the vacuum line, I just unplugged the V2i hose from the valve side and connected it to point where V1i joined 1. Basically joined both upper ends of the Y joint with the hose.

Last edited by AbhiJ : 6th July 2008 at 14:30.
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Old 6th July 2008, 15:14   #48
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Quote:
Originally Posted by AbhiJ View Post
Thanks Gaurav

I get the idea dude...

When there is no vacuum in the valves, no gas gets released into the valve anyways so no question of it getting released in the bay. So that will not be a problem. To be extra safe anyway, I ll plug them, If the plugs dont pop out, we know no gases are being emitted.

there are only two issues left in my mind...

1) F.E. will decrease slightly, right?
2) Where the hell does hose #2 go? Will try and find that out and take pictures.


Btw, to plug the vacuum line, I just unplugged the V2i hose from the valve side and connected it to point where V1i joined 1. Basically joined both upper ends of the Y joint with the hose.
1. I am not 100% sure about the F.E. issue, since there may be some increase in combustion efficiency with EGR at certain rpms and loads. But you should get more power and less soot build up.

2. I would also like to know where #2 goes.

V1 & V2 should only see clean vacuum, so why did they get contaminated and clogged with soot in the first place? What is the point spending 16.5k if soot will again pour in. Is soot clogging your brake vacuum circuit? You should check out the entire vacuum circuit to see what is going on.
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Old 6th July 2008, 20:53   #49
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Not much of problem closing the EGR, more Nox (pollution) and probably slight loss of FE.
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Old 7th July 2008, 18:45   #50
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Default Hose #2

Hose #2 terminates as shown in the pictures below..

Accent Viva Crdi: Purge Control Solenoid Valves - Rs.16.5k! EDIT: Fixin it DIY style!-img_0264.jpg

Accent Viva Crdi: Purge Control Solenoid Valves - Rs.16.5k! EDIT: Fixin it DIY style!-img_0268.jpg

Accent Viva Crdi: Purge Control Solenoid Valves - Rs.16.5k! EDIT: Fixin it DIY style!-img_0271.jpg

I have no idea what that is!!

Waiting for your feedback Gaurav..

Last edited by AbhiJ : 7th July 2008 at 18:50.
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Old 7th July 2008, 19:38   #51
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That is diaphram vacuum actuator. The question now is what valve does it actuate? You will have to remove the plastic covers around and above it to get a better look. Perhaps you can do this and snap some more pics?

Regards,

Gaurav
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Old 7th July 2008, 20:10   #52
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Will do...

Btw, what else normally uses vacuum in a diesel car...?

I mean Brakes, the EGV and ....
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Old 7th July 2008, 20:12   #53
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Quote:
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Will do...

Btw, what else normally uses vacuum in a diesel car...?

I mean Brakes, the EGV and ....
shutting of fuel supply while decellaration!
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Old 7th July 2008, 20:57   #54
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Quote:
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shutting of fuel supply while decellaration!
That is important!!

Basically... I risk loosing engine braking totally.
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Old 7th July 2008, 23:43   #55
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Quote:
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shutting of fuel supply while decellaration!
Headers,
I am not familiar with how this works. Can you explain this is in more detail?
Thanks,
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Old 8th July 2008, 07:46   #56
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An interesting turn of events AbhiJ!

Quote:
Originally Posted by AbhiJ View Post
...
[/b]I tried the method you mentioned by sealing off the vacuum pipe, and it worked perfectly![b] My brakes are back to normal!
...
Generally tinkering around with your engine when you arent totally sure what you are doing is okay - but when you start playing with components like the brakes please be extra careful (or avoid it totaly)!!
OEM equipment is tested for thousands of km, even if it is something as simple as a connector for two vaccuum tubes - so mak sure that the joint at the pipes doesnt pop off days/weeks/months down the line - this will mean a sudden loss of power brakes and can definitely catch you off guard.

cya
R
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Old 8th July 2008, 08:05   #57
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Quote:
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Headers,
I am not familiar with how this works. Can you explain this is in more detail?
Thanks,
Well..am not too great in details, but read somewhere that modern ECU controlled cars shut up fuel while decellarating. This is done via a diaphragm which is connected to the fuel pump and accelerator.

Will try and source the news for our benefit!
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Old 8th July 2008, 12:40   #58
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Quote:
Originally Posted by headers View Post
Well..am not too great in details, but read somewhere that modern ECU controlled cars shut up fuel while decellarating. This is done via a diaphragm which is connected to the fuel pump and accelerator.

Will try and source the news for our benefit!
Why wouldnt they just not fire the injectors?

cya
R
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Old 8th July 2008, 12:43   #59
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Quote:
Originally Posted by Rehaan View Post
Why wouldnt they just not fire the injectors?

cya
R
By not firing the injectors means to shut fuel supply to them - remember we are talking diesel technology here!

Also, this is done to conserve fuel - every drop -

OT: reminds me of the new Honda ad during recent F1 - nice ad though!
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Old 15th July 2008, 22:54   #60
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Update:

I finally caved in.

I got a call from the Service Centre that the valve has arrived in their stock. Sent the car there and they changed 1 of the valves.

The car is driving/stopping well now.

F.E.? Remains to be seen.

Total bill Rs. 8257.

Thank you everyone specially RedMM340 for all the info, patience and support.

Last edited by AbhiJ : 15th July 2008 at 22:55.
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