Fantastic technical explanation. Discovering the slight Vacuum on the in cylinder waveform and suspecting a intake valve timing problem was very intuitive! Great Job! Very informative! Keep up the Good Work!

Hello Tommy, I like your videos, I haven't seen new videos again, I wanted to let you know that your videos are very instructive and good learning. Thank you

Outstanding waveform analysis Tom. The fact that you caught it so clearly with the cranking waveform is super cool. I've not seen anyone do that before. Well worth remembering for either a burnt valve or timing issues. Well done sir! Thanks!

I don’t own all of these nice diagnostic tools, but after a head replacement I suspected the late intake-cam timing too (for the same reasons as you showed - tooth count and mark slightly off), after I kept getting the P0341 code, long starting, and very bad performance. My cam adjuster looked pretty worn too, so I will probably replace.Thanks for the carefull diagnosis and explanation; very interesting!

Excellent diagnostic procedure. Thank you for sharing.

These are great videos, Tommy! Keep up the good work.

GRACIAS AMIGO POR COMPARTIR TUS CONOCIMIENTOS

Good explanation & dissection of the waveform Tom! If you have the camshaft specs you can really get precise with the degrees.

Yes. Good point. That would be confirmed with a cranking vacuum wave form as well.

Good Job Tom..Gotta love the transducers. Very helpful tool to have for sure. Just a helpful suggestion for ya.. Once you've figured out the 180 events in ms, which in this case was 158ms When you leap frog the cursors, all you have to do is look at the delta time for the next event rather having to add. Just makes it quicker that way. But...I'm sure you probably already knew that. Lol Keep up the great vids wolfman..Always enjoy seeing what your working on. Cheers

Hey tommy if you ever wanted to know more about in cylinder testing Bernie Thomson offers an 8 hour class.

Great video! What kind of pressure transducer are you using with the verus? Thanks for your time.

Thats what the ecu does when cam sensor isn't working it sends fuel at valve closed which you would barely notice if at all.

Great case study and fix! Im also a Verus scope user. Would love to study these waveforms. Can you share these files? I catalogue many others in my spare time so I have some known goods on many vehicles. Willing to share any and all. Thanks and great work!

Enjoyed the talk through of your findings

I have a problem with this code p0341 Peugeot 1.4vti engine I changed the sensor and the electricity is good then I changed all the abracam and the abracam wheel and I still had the same problem.

Good video amazing how sensitive your scanner is to pickup that small amount of vacuum.

Great job Toni👌👌👍👍

a mechanical vacuum gauge would have been nice to see also ;) you did one on the first video, but it didn't seem to work too great, not very responsive or maybe the port you had it on. although it kind of showed high speed needle vibration.

Im sure i have this exact problem and im wondering if I can rotate the intake cam 1 tooth without removing the camshaft caps?

What is this equipments , really useful

Tommy, good one thanks for sharing. cheeeers

Awesome video! Thanks for putting it all together! I was hoping the whole video you would get a shot of fish tank... chlicids?

hi tommy , i have a 2012 vw jetta hybrid , my car want start and troubleshoot it and it gave me the code p30A21 -14687 , maximum number of engine start interruptions exceeded , can you plz help me to figer out what can be the problem , i will really appreciate you , im looking forward to hear frome you thx

Hi, Can anyone give me the part number for the fitting that links the PV350 to the Pico extension. I'm struggling to get one in the UK. Thanks! 👍

Do you know Richard mcustian he just uploaded a vid incilinder pressure transducer and graphic explanations . I recon your correct.

where should I start first for this code on a vw golf mk4 2.0?

snap on pressure transducer a a joke , you can see there how does not read atmospheric pressure goes on negatives of your scale , I had snap on change my 2 times , figure out the hose is the problem but guess what snap on does no sell hose , regular compression hose simple does not work with snap on transducer, fluke pv 350 reads ok very noisy signal , to be used with snap on scope , good with Pico because you can adjust the filter amount, I got other transducer from Russia and the signal is so clean and accurate for $130 can be used with snap on or any thing, on the wave for sample you took there there is not way to know if you had plug cat or restriction on your exhaust valve, nice job men, unfortunately when I call for support to snap on they make me thing like I do not what I am doing even when I told them about 2 more brands of transducer reading ok. thank you for sharing

Iatn.net may be usefull for getting a known good wave form. Other than that u could request some from Pico user. U will just need to download the software which is free.

Hey by any chance you have a email you can share so I can send you pictures of my engine, I have a 04 VW Passat 1.8t and I’m having trouble identifying a certain part of my intake manifold

The vacuum pull is being created because both valves are closed before the piston has reached BDC.

That known bad had a leaking exhaust valve as well Tommy.

Yes you right i did to many be for this code

tommy greetings from Egypt plz if you have something or any information that help me to understand this wave form plz share it with me . how i know if the proplem in timing and not from cam sensor

Correct. Slight.

How do I send you a pic?