WPS waveforms

Ask for and share advice on using the PicoScope kit to fix vehicles here.

WPS waveforms

Postby Damian Mc Bride » Sun Jan 20, 2013 8:37 pm

Hi guys was just playing with WPS on a K12 micra today i took a capture of exhaust pressure and current on cyl 4 coil.
I disconnected an injector in the middle of the capture can you pick whitch cylinder it is and tell me how you came to a choice.
03 Micra K12 WPS in Exhaust running bad.psdata
(1.79 MiB) Downloaded 227 times


Next is a cranking compression waveform, any tips on setup or dose the setup look ok.


I have a lot of learning to do now :D
Thanks Damian
Damian Mc Bride
User
User
 
Posts: 39
Joined: Sat Sep 03, 2011 8:50 am

Re: WPS waveforms

Postby Liteace » Sun Jan 20, 2013 9:30 pm

I would say cylinder 3 but there again Im still learing as well + I dont have a WPS and it would take me a lot as what your doing to get the hang of it
DONT SHOOT YOURSELF IN THE FOOT
Liteace
Guru
Guru
 
Posts: 146
Joined: Fri Jan 27, 2012 12:25 pm

Re: WPS waveforms

Postby Robski » Mon Jan 21, 2013 12:01 am

Works out @ cyl #1 to me going by +1 rule.......

I'm not sure what you're asking with the cranking compression capture ?

Did you have the throttle wide open as you would with a gauge ?
User avatar
Robski
Advanced User
Advanced User
 
Posts: 602
Joined: Tue Sep 14, 2010 6:36 pm
Location: Yorkshire

Re: WPS waveforms

Postby Fat Freddy » Mon Jan 21, 2013 12:26 am

Robski wrote:Works out @ cyl #1 to me going by +1 rule.......

I'm not sure what you're asking with the cranking compression capture ?

Did you have the throttle wide open as you would with a gauge ?


Rats! You beat me to it.

To busy making pretty pictures.


FF
Image
User avatar
Fat Freddy
Zen Master
Zen Master
 
Posts: 267
Joined: Fri May 04, 2012 4:52 am

Re: WPS waveforms

Postby Robski » Mon Jan 21, 2013 12:32 am

I was going to map it out too but did it without, I was waiting for Damian to reply then I planned to email him with explanations :D

Lol at the pretty pictures comment :lol:
User avatar
Robski
Advanced User
Advanced User
 
Posts: 602
Joined: Tue Sep 14, 2010 6:36 pm
Location: Yorkshire

Re: WPS waveforms

Postby Damian Mc Bride » Mon Jan 21, 2013 7:56 am

Hi yes it was cyl 1 injector disconnected. :)
So to work it out do you +1 to the cyl that lines up on screen to allow for length of exhaust.

Rob the cranking compression test i was just checking is that how you would set up for taking capture for your libarary or would you leave out the cam/crank.
On this K12 you have to remove plastic housing with throttle body to get at spark plugs so no air restriction on cranking compression.
Thanks Damian
Damian Mc Bride
User
User
 
Posts: 39
Joined: Sat Sep 03, 2011 8:50 am

Re: WPS waveforms

Postby Damian Mc Bride » Mon Jan 21, 2013 8:11 am

Hi
Just thought after looking at FFs post again its not length of exhaust its No 1 on exhaust stroke :oops:
Thanks Damian
Damian Mc Bride
User
User
 
Posts: 39
Joined: Sat Sep 03, 2011 8:50 am

Re: WPS waveforms

Postby Robski » Mon Jan 21, 2013 8:14 am

Damian

when I get to my PC i'll do you an explanation with pictures.
User avatar
Robski
Advanced User
Advanced User
 
Posts: 602
Joined: Tue Sep 14, 2010 6:36 pm
Location: Yorkshire

Re: WPS waveforms

Postby Liteace » Mon Jan 21, 2013 8:15 am

:oops: I could edit mine and change my 3 to a 1 but I wont :D, this is the 1st page ive gone straight to this morn I was dying to know, with the picture and a a little explanation I can sort of see it now. Do one for me as well please Rob :?

Thanks
DONT SHOOT YOURSELF IN THE FOOT
Liteace
Guru
Guru
 
Posts: 146
Joined: Fri Jan 27, 2012 12:25 pm

Re: WPS waveforms

Postby Damian Mc Bride » Mon Jan 21, 2013 8:27 am

Thanks Rob
Damian
Damian Mc Bride
User
User
 
Posts: 39
Joined: Sat Sep 03, 2011 8:50 am

Next

Return to Diagnostic discussion

Who is online

Users browsing this forum: No registered users and 0 guests