Hi, I've perfrormed this test today as well. I checked the VVT value via INPA software. Another method might be to adjust the motor counter clockwise until you can feel the slightest resistence - this equaled 174° in my case. It is possible to adjust the VVT motor via INPA with just one click to 170° - should be fine for a compression test. Although I just have a cheap compression tester (which I compared to a high quality version) I can confirm values between 11-12bar - my engine ran 324.000km so far, so I am quite happy with the outcome. This video was extremely helpful as a reference, thank you very much! =) Kind regards, Phil
Can confirm, also set my Valvetronic in INPA to 170° (Actual value was 166 which was exactly on 176 +-10°) so I was fine with that. Had to disconnect the plug going into Valvetronic motor after setting it to 170 because the Valvetronic otherwise returned back to its previous angle with 46° after about 8 seconds. Make sure to do that and check the angle sensor after that to be 100% sure to have the correct Valvetronic rotation angle while testing. Also after the test was completed and everything was reassembled, I set the Valvetronic to 45° via INPA and pressed F8 (An DME zurück / Back to DME). After clearing the fault codes, the car started relatively normal, just had some variance in RPM between 800 and 1200RPM for a minute, guess because of some adjusting/self test etc. and went back to normal after that. I had 10 Bar (9,95 to 10,15 variance) on mine with a cheap no name compression tester. Not too sure what to think of that, maybe my compression tester is just off by 10-15% or there is some other reason behind that. Most important to me is that the cylinders are close to each other and that is the case.
Excellent video, would you mind if I added some value? If so I will remove no hard feelings Gent. Specifications I found are as follows: Compression pressure: 9/18 Bar or 130/261 PSI Min/Max Compression variance: 2 Bar or 29 PSI Blow off area around coils and plugs before removal Once testing is completed: Key off Return all to a normal state Reconnect anything disconnected, coils, plugs (torque to spec, saves you a huge headache), fuses connectors, do so securely but carefully! don't break stuff! Key on Wait 2 mins listen for click click from valvetronic, or run a limits relearn clear codes key off wait 1 min key on start, this should eliminate two things 1) Rough start 2) Brown streaks in your knickers Two things I love more than these cars, 1) Our helpful community members/culture 2) My parts guy Don Will try and post a video to my channel with the results of my testing.
I will try to see the eccentric shaft value with bimmergeeks diag sw today and post a video to my channel soon as a follow up to this gentlemans excellent video, thank you good sir for your diligence in providing the details.
I know people have their own reservations about Carly. But... I was able to use my Carly adapter to see 'live data' and read out the valvtronic position real time. The parameters are:"Vvt actual value" and "Vvt Eccentric actual value" in the Live Data menus.
I was able to do it in INPA, also able to set the angle to 170° via INPA, had to disconnect the connector on the Valvetronic motor though because it kept going back to its previous angle after about 8 seconds. After the test before starting the engine, I switched the Valvetronic to 45° via INPA and after that pressed F8 (An DME zurück / Back to DME) After that, cleared fault codes and the engine started relatively normal, just some 800-1200 RPM variance for a minute, went back to normal after that.
![How To Compression Test Your Engine [2023]](http://i.ytimg.com/vi/v0gH8dFyWH8/mqdefault.jpg)
![SAFEPLANET - ดาวเคราะห์ [ THE PLANET ]](http://i.ytimg.com/vi/4X1XL3I_k3c/mqdefault.jpg)
![ทุกครั้งที่หลับตา (Lucid Dream) - AYLA's [ Official MV ]](http://i.ytimg.com/vi/4i1OBAQyv58/mqdefault.jpg)
Hi, I've perfrormed this test today as well. I checked the VVT value via INPA software. Another method might be to adjust the motor counter clockwise until you can feel the slightest resistence - this equaled 174° in my case. It is possible to adjust the VVT motor via INPA with just one click to 170° - should be fine for a compression test.
Although I just have a cheap compression tester (which I compared to a high quality version) I can confirm values between 11-12bar - my engine ran 324.000km so far, so I am quite happy with the outcome.
This video was extremely helpful as a reference, thank you very much! =)
Kind regards,
Phil
Can confirm, also set my Valvetronic in INPA to 170° (Actual value was 166 which was exactly on 176 +-10°) so I was fine with that. Had to disconnect the plug going into Valvetronic motor after setting it to 170 because the Valvetronic otherwise returned back to its previous angle with 46° after about 8 seconds. Make sure to do that and check the angle sensor after that to be 100% sure to have the correct Valvetronic rotation angle while testing.
Also after the test was completed and everything was reassembled, I set the Valvetronic to 45° via INPA and pressed F8 (An DME zurück / Back to DME).
After clearing the fault codes, the car started relatively normal, just had some variance in RPM between 800 and 1200RPM for a minute, guess because of some adjusting/self test etc. and went back to normal after that.
I had 10 Bar (9,95 to 10,15 variance) on mine with a cheap no name compression tester. Not too sure what to think of that, maybe my compression tester is just off by 10-15% or there is some other reason behind that. Most important to me is that the cylinders are close to each other and that is the case.
Excellent video, would you mind if I added some value? If so I will remove no hard feelings Gent.
Specifications I found are as follows:
Compression pressure: 9/18 Bar or 130/261 PSI Min/Max
Compression variance: 2 Bar or 29 PSI
Blow off area around coils and plugs before removal
Once testing is completed:
Key off
Return all to a normal state
Reconnect anything disconnected, coils, plugs (torque to spec, saves you a huge headache), fuses connectors, do so securely but carefully! don't break stuff!
Key on
Wait 2 mins
listen for click click from valvetronic, or run a limits relearn
clear codes
key off wait 1 min
key on
start, this should eliminate two things
1) Rough start
2) Brown streaks in your knickers
Two things I love more than these cars, 1) Our helpful community members/culture 2) My parts guy Don
Will try and post a video to my channel with the results of my testing.
Great contribution - thank you!
Hi. You can get the compression values/ranges from within ISTA under troubleshooting/repair.
Is that a secondary air injector upgrade? -connected to the line running over your valve cover
please can you explain the setup of your catch can?
Where did you get the aftermarket CCV system from?
how is that oil catch can holding up ?
I will try to see the eccentric shaft value with bimmergeeks diag sw today and post a video to my channel soon as a follow up to this gentlemans excellent video, thank you good sir for your diligence in providing the details.
Have you found a way to see/set the valvetronic angle without ista?
No, unfortunately not.
I know people have their own reservations about Carly. But... I was able to use my Carly adapter to see 'live data' and read out the valvtronic position real time. The parameters are:"Vvt actual value" and "Vvt Eccentric actual value" in the Live Data menus.
I was able to do it in INPA, also able to set the angle to 170° via INPA, had to disconnect the connector on the Valvetronic motor though because it kept going back to its previous angle after about 8 seconds. After the test before starting the engine, I switched the Valvetronic to 45° via INPA and after that pressed F8 (An DME zurück / Back to DME)
After that, cleared fault codes and the engine started relatively normal, just some 800-1200 RPM variance for a minute, went back to normal after that.
Can be done in inpa and protools
Where do I go in ista to run this test?
If you take your ignition coils out there's no need to pull a fuel pump fuse or relay the engine is not going to start while doing a compression test.