Diesel Engine Pressure pulse analysis with a delta sensor & Bosch KTS

Intake, Crankcase & Tail Pipe pressure analysis
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[@duanedonaldson2262]

I would recommend experimenting with hose lengths, your exhaust hose was super long. Puffs of air take time to travel to and fro, then the next puff will collide with the previous before it has a chance to retract, just an idea you may wish to play with. Appreciate the video and waveforms.

[@mike-yp1uk]

I made one that works great. I got it from dave sterns

[@ellodave1]

I’m still new to scopes but I think it’s cylinder 1. I do do find your videos very useful Gary keep it up 👍

[@edmondsollaku6535]

Great Video, I haven't been able to make an accurate diagnosis yet with a pulse sensor, I need more practice. Thank you for the explanation. I think you have disconnected injector 2.

[@DanWallis86]

I suspect cylinder 2 but I think it will also be impacted by the hose length to the pulse sensor. Great video.

[@DanWallis86]

I’ve also seen these used with a stethoscope to diagnose noise faults.

[@alrifainidal]

nice video Mate . Cylinder 3

[@huytghuy]

I reckon injector 1 was unplugged. Videos are very informative mate.

[@stephenmarshall5302]

Great video, wel explained and put the sensor through its paces mate. I'm not a master tech btw lol

[@hamham4547]

So which cylinder is misfiring its been one year now?

[@deisediagnostics629]

Another great video 👍 I reckon it was cylinder 2

[@DanWallis86]

Is that injector pulses correct? As it appears to have multiple strikes on one stroke and a single stroke on the second stroke. I found on my hilux in Australia it would open the injector with multiple strikes but it would do a single strike every second stroke. I correlated that with my crank sensor and it appears the multi strike was the power stroke.

[@d.d4184]

Cylinder 3. You can see the pull on that Cylinder.On the exhaust pulse why have you got 8 pulses in between your injectior pulse one low one high?

[@husaberg4]

loving your stuff ! very informative ...cheers :)

[@josecatalan6314]

What does the small downward pulse (BBDC) mean that is repetitive in exhaust.

[@SYDiagnostics]

Great video and explained very well, I really need to start using mine, but unfortunately seldom see engine issues that aren't already catastrophic

[@intelligentauto737]

I went through a spate of getting vehicles in with rough running issues but I’ve not seen a misfire for a while. Maybe we’ve replaced all those duff Siemens Injectors now! 🤔🤔🤔🤔

[@SYDiagnostics]

@@intelligentauto737 I need a crash course in all this lol.... Maybe a trip up north is needed when possible 😂

[@intelligentauto737]

You’re Always welcome

[@stevietomo2864]

Just for my own curiosity isn’t the kts scope only good to 60v wouldn’t the injector’s v damage the scope or was it attenuated love the videos by the way I’m just trying to learn more about scope use

[@myleswaller]

Top stuff .

[@hightttech]

Cyl 3. Yes?

[@zizu890]

I think in the beginning you put this piston chart wrong. I think you put it on the main injection plus and pre injections pulse. That's why there is no 4 equal pulses. I am sorry for my bad english.

[@romanmaletskiy]

согласен!и я думаю что инверсию сигнала нужно сделать,как минимум в том понимании которое у нас)))-пользователей autoscope, mt pro или diamag.Это касательно осциллограммы по впускному коллектору.По картеру и по выпуску вроде линейка правильно стоит

[@gypsysharky]

Piston chart a different programme?

[@gypsysharky]

Hi What are the scope settings on each test?

[@JBTaylor86]

That intake trace is strange, first I thought you where 360 out, PCM using same capacitor for Injector 1/4. I’m guessing at no#3 image not very clear, might be worth changing laptop screen refresh rate see if that helps 👍🏻

[@ousmanesarr7287]

Thats exactly what it is. You will see cylinder 4 injector firing if u back probe cyl 1. So he put the overlay on a 360degre span really

[@user-ot5pp4xe8l]

Cylinder 1? No performance on the power stroke of cylinder 1, will cause the poor performance on the exhaust stroke shown in cylinder 2. I think???

[@martijnvaneck3690]

cilinder 2

[@m98bravo4]

so whats the answer ?

[@JohnHughes0007]

Cylinder 3

[@thomasstevenson682]

wher can i by marshall?

[@soptea]

Maybe it sound stupide ,but you did disconect two injectors ?I have no other explanation for that weird waveform......

[@intelligentauto737]

No only one injector was disconnected

[@renatotorri2910]

cilinder 3 out fire

[@garydoheny734]

Cylinder 3, btw where can I get this piston chart please?

[@DanWallis86]

Google the drivability guys piston overlay.

[@mickygblue]

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