Following on from the previous post on parasitic drain, here comes another one! To begin with I can take no credit for this post. All the hard work was done by Paul Foster who kindly sent over the article. I’ve just purely put the picture and the waveform together. Enjoy! I wanted to bring to your a...

Hello Eugene, To clarify there is fuel coming out of the common rail leak off port but not from the leak off on the pump? Have you also performed an injector leak off test? Did we confirm the low pressure fuel system was OK? If not, can you supply an external supply of fuel to the high pressure pump...

Hello, To prevent anyone duplicating work, please can we use the existing post you started on the Diagnostic Discussion board as seen here - https://www.picoauto.com/support/topic23301.html. There are some tests that need some clarification on this post which I think will help get direction on this ...

Hello Eugene, Apologies for any confusion. With regards to a grounding issue, I meant the measurement not the component so where you have connected the black, ground lead of the test lead. If you can connect the scope up with a current clamp as if you were performing a relative compression test, inc...

Hi, Looking at the capture there may be some connection issues with grounding but that aside you have a duty cycle of around 50% which shows the ECU is sending a command to the pump which would allows some fuel into the pumping chambers to start creating flow. Given you have 0 Bar of pressure I woul...

Hello, As Martyn has said a PSDATA file will greatly help us with your question, even a screen shot would help us get an idea of what you're seeing. In terms of understanding CAN we have a large number of resources on this subject. The guided tests are always a good place to start which can show you...

Thanks Paul. It's nice that they are out there and out of my brain mostly! Couple of bits of snagging to do but on the most part they should be useful.

I've got some ideas for the next ones but if you think of anything please let me know.

Kind regards

Ben

Hi all, Some news to share with everyone. There will be more about this in the upcoming newsletters but thought I'd get peoples thoughts on 10 new guided tests that have made it into the Early Access version of PicoScope 7. HDOH tests.png There will be more content for PicoScope and HD and OH applic...

Hello and welcome to the forum! The 4425 is still a great scope and will continue to improve with the software continues to bring new features. The forum is a great place to learn with a lot of information to take in. To help contain all this information in one place we have a useful links page whic...

Hello, Just wanted to add a couple of thoughts. The first one being pump timing. I know these will be geared so there isn't any movement and being a new tractor with low hours, it's unlikely but not impossible. Following on from the post where we looked at using the derivative maths function to look...