HELP! VFAD trouble
08-31-2009, 01:36 AM
#29
Super Moderator
Jon316G,
Thanks for the info Mate!!!...
I don't want to unhook my VFAD.....just yet, .....BUT ......you have given me an idea....
I want your opinion on this...
You may not know this but Mazda in their wisdom????, No longer supply Vacuum nipples for each separate Rotor on the intake side ports, you know this is where dealers and Series I owners can Seafoam from...well what do 09 (Series II ) Owners Do???..
Is there any reason IYO why I could not use this Vacuum Nipple behind the Throttle Body?, the same one used for the VFAD..
I am thinking I could disconnect it and link in a temporary vacuum hose if I want to de-carb my Rotary???
What do you think Jon...will it work...where is RG when you want him...
Thanks for the info Mate!!!...
I don't want to unhook my VFAD.....just yet, .....BUT ......you have given me an idea....
I want your opinion on this...
You may not know this but Mazda in their wisdom????, No longer supply Vacuum nipples for each separate Rotor on the intake side ports, you know this is where dealers and Series I owners can Seafoam from...well what do 09 (Series II ) Owners Do???..
Is there any reason IYO why I could not use this Vacuum Nipple behind the Throttle Body?, the same one used for the VFAD..
I am thinking I could disconnect it and link in a temporary vacuum hose if I want to de-carb my Rotary???
What do you think Jon...will it work...where is RG when you want him...
08-31-2009, 01:43 AM
#30
Good thinking ASH... but there is one problem with that.
When you crank start the engine to decarb (ESS disconnected) the SSV and APV valves are closed.
As you know, the primary runners (which are always open) is at the "top" of the lower intake manifold.
So even if you pulled Seafoam into the intake from the VFAD nipple, wouldn't most of the fluid just run into the secondary and axillary runners?
And with the SSV and APV valves closed, nothing gets into the engine.
But you do raise a good question, what do the '09s do to decarb.
I'll have to think about this for a minute...
When you crank start the engine to decarb (ESS disconnected) the SSV and APV valves are closed.
As you know, the primary runners (which are always open) is at the "top" of the lower intake manifold.
So even if you pulled Seafoam into the intake from the VFAD nipple, wouldn't most of the fluid just run into the secondary and axillary runners?
And with the SSV and APV valves closed, nothing gets into the engine.
But you do raise a good question, what do the '09s do to decarb.
I'll have to think about this for a minute...
Last edited by Jon316G; 08-31-2009 at 01:46 AM.
08-31-2009, 01:49 AM
#31
Super Moderator
I am thinking of cleaning without the ESS disconnected, even thinking of doing the "water" steam Cleaning method???...Thoughts..
I really like the idea and principal of steam cleaning carbon off, as the method should remove built up carbon in very fine particles...almost in reverse to the original build up??
I really like the idea and principal of steam cleaning carbon off, as the method should remove built up carbon in very fine particles...almost in reverse to the original build up??
08-31-2009, 01:59 AM
#33
Super Moderator
Did not think of that Jon, what is it that attachés there "Jet Air" ??, I just want to check my parts info and see if 09's have it,...I guess they do?
08-31-2009, 02:06 AM
#35
Super Moderator
Is that the Air Valve Actuator pipe for Emissions?
08-31-2009, 02:08 AM
#36
Super Moderator
If it is the 09's use some of those Vacuum pipes but the AVA has changed and is 09 specific?
But it looks like it still connects in that area, parts info does not show that angle of diagram
But it looks like it still connects in that area, parts info does not show that angle of diagram
Last edited by ASH8; 08-31-2009 at 02:14 AM.
08-31-2009, 02:19 AM
#38
Super Moderator
Looks like that would do the job Ok Jon..?
08-31-2009, 02:31 AM
#40
Super Moderator
If I use the water or Seafoam method would the car still run OK with that Vac line temp disconnected??, at about 2000 RPM
08-31-2009, 02:34 AM
#41
Well... when you decarb, you don't want the car to start.
Remember, you spray the decarb fluid while cranking for 10 seconds.
Then you let it sit for an hour before starting the car.
This is why you disconnect the ESS.
Refresher... starting on page 7 of this TSP:
http://www.finishlineperformance.com...5-08-1883f.pdf
Remember, you spray the decarb fluid while cranking for 10 seconds.
Then you let it sit for an hour before starting the car.
This is why you disconnect the ESS.
Refresher... starting on page 7 of this TSP:
http://www.finishlineperformance.com...5-08-1883f.pdf
Last edited by Jon316G; 08-31-2009 at 02:38 AM.
08-31-2009, 06:40 AM
#44
Should I still cap the intake side for any reason? Again, I've not had a problem.
btw: although your video now more properly cites inches of mercury vacuum, air pressure is still the motive force. We're not talking Stargate Zero Point Modules here.
btw: although your video now more properly cites inches of mercury vacuum, air pressure is still the motive force. We're not talking Stargate Zero Point Modules here.
08-31-2009, 01:51 PM
#47
Oh, I would never leave nipples 'exposed.'
When I removed my VFAD I left all the vacuum piping in place and capped the end at the [former] VFAD actuator just to keep the line clean. This way I could simply remove the RB Duct, reinstall the VFAD and hook up the actuator line to get back to stock.
Note that I have my RB duct mated to my stock airbox.
When I removed my VFAD I left all the vacuum piping in place and capped the end at the [former] VFAD actuator just to keep the line clean. This way I could simply remove the RB Duct, reinstall the VFAD and hook up the actuator line to get back to stock.
Note that I have my RB duct mated to my stock airbox.
