indicated 1200 RPM on the frequency/RPM -- ----- ---- --- --- - ---- -----.

The missing words will be "indicated 1200 RPM on the frequency/RPM so thats 2400 RPM for a four stroke"

Sorry. Couldn't help it.

FF

at 1/1 or 1/2 the engine rotation (this second option matches with the example)

Thats what it is. Something to take a note of in future.


FF

Thanks aux_r for the explanation. It fits in and explains the rest of my capture very well. It is a Denso HP3 pump which as far as I know (diesel dumb) has two pumping elements. It gives me alot better understanding of what I am seeing. I did have a look at another file from a Chrysler 300C, which i...

Yes, the pressure drop is inevitable on each injection, as the injection itself will consist of a finite volume of fuel that has to be replenished with the HP pumping elements. As these elements are running at a fixed volume on this engine at idle, which is less than the injected quantity (for fuel...

Just a question. Not too good on CRD. Can this pressure drop shown here be attributed to the injector? It seems to occur over a large amount of crank degrees where most of the time the injector is closed. What does it look like with less filtering? This image is similar but not consistant, which is ...

Can you post the data files.

FF

As Robski said. Also Nick points that out in his study. Needless to say, each captured trace should be very similar, having a good self-inductive ramp, a good peak current, and a clean release. Its comparative. The most important part is the peak current and "turn off". If thats OK you know the coil...

Technically it wasn’t a lean misfire but a complete shutdown. But the symptoms did a very good job of imitating it. Hence the new MAF and injector clean. The big dumps of fuel it got when injection started again probably helped to give the lean sounding back fire. My thoughts are the coil was sendin...

I was presented with this 1991 6cyl E36 325i BMW which had an ongoing problem for the last two years and it seemed unrepairable. The complaint was lack of power, hesitation and the occasional cutting out on acceleration once warm. First up was the test drive to confirm the fault. Sure enough, once w...

Robski wrote:issue ??

Your first post isn't exactly clear is it ??

You work on that and I'll work on the second.

Davide you are not explaining things very well.


FF