Hi, I expect the GMTO unit is made using flow meters that give a pulse output. As we can measure the frequency of such pulses using maths channels in PicoScope it may well be possible to use this unit with our scopes. For nearly all injectors its possible to use low cost kits like this one http://ww...

Hi, Any laptop that can comfortably run Windows XP or above will be OK provided its USB2.0. Any laptop with only USB1.1 is likely to be very old and to be honest a $200 netbook with USB2.0 will probably be a better use of your time and money than trying to upgrade. My personal advice for workshop us...

Our web site at http://www.picoscope.tv/ has a collection of videos showing how to get the most out of PicoScope. As well as the automotive "channel" at http://www.picoscope.tv/automotive/ its also worth having a look at the basic menu overview http://www.picoscope.tv/general/basic-menu-overview-par...

Post any funny pictures or videos you want to share here. Please keep it clean though!


Not very relevant to oscilloscope diagnostics, but made me laugh

Thanks - please do post a capture with the new pump. Let me explain my request a bit better.... At 20ms/div (or longer) you will have at least one complete engine cycle so everything occurs at least once. Your waveform worries me a little bit as a fuel pump on its way out usually shows drops in curr...

That does look like a fuel pump on its way out. Its always good to have examples of faulty components.

Any chance of capturing over a longer duration say 20ms/div so we can see a repeating pattern on the pump / complete engine cycle?

Hi, For testing the alternator you will probably have an easier job if you use PicoDiagnostics and use the battery test option. This will test the battery, alternator and starter motor in one go. http://www.picoauto.com/pico-diagnostics.html For your waveform you have got some fairly large spikes so...

Hi, First of all the waveform captured by the VAS5051B looks as if it does not have enough samples across the screen to see the waveform properly. From memory the sampling rate of this unit is 5MS/s in single channel mode and 2.5MS/s in dual channel - thats not enough for CAN bus to be viewed proper...

I have updated the thread 3 posts above to explain what we understand the problem to be.

Both posts above are correct. The peak cranking pressures and minimum pressures just before EVO are as follows: pressures.gif Another possible cause of low compression is restricted air intake (less air sucked in so less to compress) but we can rule this out as the intake part of the waveform looks ...