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

Comrade · 6th July 2008, 12:19

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)

AbhiJ · 6th July 2008, 14:28

Quote:

Originally Posted by RedMM340

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.

RedMM340 · 6th July 2008, 15:14

Quote:

Originally Posted by AbhiJ

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.

dadu · 6th July 2008, 20:53

Not much of problem closing the EGR, more Nox (pollution) and probably slight loss of FE.

AbhiJ · 7th July 2008, 18:45

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..

RedMM340 · 7th July 2008, 19:38

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

AbhiJ · 7th July 2008, 20:10

Will do...

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

I mean Brakes, the EGV and ....

headers · 7th July 2008, 20:12

Quote:

Originally Posted by AbhiJ

Will do...

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

I mean Brakes, the EGV and ....

shutting of fuel supply while decellaration!

AbhiJ · 7th July 2008, 20:57

Quote:

Originally Posted by headers

shutting of fuel supply while decellaration!

That is important!!

Basically... I risk loosing engine braking totally.

RedMM340 · 7th July 2008, 23:43

Quote:

Originally Posted by headers

shutting of fuel supply while decellaration!

Headers,
I am not familiar with how this works. Can you explain this is in more detail?
Thanks,

Rehaan · 8th July 2008, 07:46

An interesting turn of events AbhiJ!

Quote:

Originally Posted by AbhiJ

...
[/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

headers · 8th July 2008, 08:05

Quote:

Originally Posted by RedMM340

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!

Rehaan · 8th July 2008, 12:40

Quote:

Originally Posted by headers

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

headers · 8th July 2008, 12:43

Quote:

Originally Posted by Rehaan

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!

AbhiJ · 15th July 2008, 22:54

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.

6th July 2008, 12:19	#46
Comrade BHPian Join Date: Jul 2008 Location: HYD Posts: 689 Thanked: 2,004 Times	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)
	() Thanks

6th July 2008, 20:53	#49
dadu Senior - BHPian Join Date: May 2007 Location: Bangalore Posts: 3,803 Thanked: 463 Times View My Garage	Not much of problem closing the EGR, more Nox (pollution) and probably slight loss of FE.
	() Thanks

7th July 2008, 18:45	#50
AbhiJ Senior - BHPian Join Date: Jun 2008 Location: Kolkata Posts: 1,498 Thanked: 1,257 Times	Hose #2 Hose #2 terminates as shown in the pictures below.. I have no idea what that is!! Waiting for your feedback Gaurav.. Last edited by AbhiJ : 7th July 2008 at 18:50.
	() Thanks

7th July 2008, 19:38	#51
RedMM340 BHPian Join Date: Apr 2008 Location: on the move Posts: 457 Thanked: 34 Times	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
	() Thanks

7th July 2008, 20:10	#52
AbhiJ Senior - BHPian Join Date: Jun 2008 Location: Kolkata Posts: 1,498 Thanked: 1,257 Times	Will do... Btw, what else normally uses vacuum in a diesel car...? I mean Brakes, the EGV and ....
	() Thanks

15th July 2008, 22:54	#60
AbhiJ Senior - BHPian Join Date: Jun 2008 Location: Kolkata Posts: 1,498 Thanked: 1,257 Times	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.
	() Thanks