Search found 104 matches: wps 500

Searched query: wps 500

by Steve Smith
Sat Nov 03, 2018 9:37 am
Forum: PicoScope 6 Automotive software
Topic: Maths is cool
Replies: 15
Views: 2560

Re: Maths is cool

... was our primary concern when measuring engine compression. With the WPS500x on the scene we are introduced to superior cylinder pressure analysis in the form of positive/negative ...
by RYM6746
Wed Aug 22, 2018 5:54 pm
Forum: Diagnostic discussion
Topic: Audi A4 2.0 TDI Rough idle
Replies: 39
Views: 20743

Re: Audi A4 2.0 TDI Rough idle

With the WPS 500 you can definitely check valve opening time in relation to crankshaft degrees. You can compare this to every other cylinder if you dont have a spec to go buy. This will tell you if any of the components that operate the valve are worn/defective
by Steve Smith
Mon Jul 23, 2018 3:58 pm
Forum: Diagnostic discussion
Topic: Audi A6 BLB engine 2.0 TDI vibration
Replies: 10
Views: 1074

Re: Audi A6 BLB engine 2.0 TDI vibration

... cold, allow the engine to run for a while and retest. If you have a WPS 500 you can now carry out an Absolute Compression test by placing the WPS into cylinder 1 You ...
by terbo
Tue May 15, 2018 9:09 pm
Forum: Diagnostic discussion
Topic: Polo 1,2 3-Cyl. - WPS 500 Pressure Question
Replies: 17
Views: 1980

Re: Polo 1,2 3-Cyl. - WPS 500 Pressure Question

Just noticed this one was not completed, i never get a Notification from the Forum, don´t know why.Anyways.... The Problem with this Car "Glowing Cat" was solved with a new Engine ECU. Don´t know what went Bananas in that thing, but with a used one the car drives nice as before but no more extrem He...
by pinpointdiag
Fri May 04, 2018 9:52 am
Forum: Diagnostic discussion
Topic: Polo 1,2 3-Cyl. - WPS 500 Pressure Question
Replies: 17
Views: 1980

Re: Polo 1,2 3-Cyl. - WPS 500 Pressure Question

Hi this thread is very interesting. I have a wps 500 and this explains so much. This is a fantastically powerful tool. Lots to learn though. So thanks ...
by Autonerdz
Wed Apr 25, 2018 8:08 pm
Forum: Diagnostic discussion
Topic: Polo 1,2 3-Cyl. - WPS 500 Pressure Question
Replies: 17
Views: 1980

Re: Polo 1,2 3-Cyl. - WPS 500 Pressure Question

Normally compression pressures follow intake pressures. This capture was made before the WPS existed.
by Technician
Wed Apr 25, 2018 8:18 am
Forum: Diagnostic discussion
Topic: Polo 1,2 3-Cyl. - WPS 500 Pressure Question
Replies: 17
Views: 1980

Re: Polo 1,2 3-Cyl. - WPS 500 Pressure Question

One of the really good things about this forum is you never stop learning and understand something new from an old idea. What I mean by this is; back at college we learned about volumetric efficiency (VE) and cylinder scavenging and when CATS were introduced to us back in the 1980's we were educated...
by terbo
Tue Apr 24, 2018 7:07 pm
Forum: Diagnostic discussion
Topic: Polo 1,2 3-Cyl. - WPS 500 Pressure Question
Replies: 17
Views: 1980

Re: Polo 1,2 3-Cyl. - WPS 500 Pressure Question

Wow, thank you for these Infos.I coukd not get my head around that.

I Will have to look into more infos on WPS Tests.
But makes total sense so far to me.
by Autonerdz
Tue Apr 24, 2018 12:35 am
Forum: Diagnostic discussion
Topic: Polo 1,2 3-Cyl. - WPS 500 Pressure Question
Replies: 17
Views: 1980

Re: Polo 1,2 3-Cyl. - WPS 500 Pressure Question

This is a real phenomenon and not a limitation of the pressure transducer Essentially everything takes time, Yup. The reason high RPM WPS tests have no real diagnostic value has to do with the physics of pressure wave propagation to the sensor. At some point the pressures in the cylinder ...
by Steve Smith
Mon Apr 23, 2018 11:55 pm
Forum: Diagnostic discussion
Topic: Polo 1,2 3-Cyl. - WPS 500 Pressure Question
Replies: 17
Views: 1980

Re: Polo 1,2 3-Cyl. - WPS 500 Pressure Question

... of this engine. It simply cannot breathe fast enough as you have proven looking at the gauge in the exhaust system simultaneously with the WPS in the cylinder. Assuming the engine to be 100% Volumetric Efficient (VE) which it never will be, we should be seeing max airflow at approx. 55 ...