Search found 46 matches

by kona
Fri Oct 11, 2019 7:51 pm
Forum: Diagnostic discussion
Topic: Valve timing with wps
Replies: 4
Views: 401

Re: Valve timing with wps

Hi,
Most likely that the problem is in the valves. The belt is installed correctly.
Make a record of pressure in the intake manifold at idle.

Good luck.
by kona
Thu Sep 05, 2019 7:33 pm
Forum: PicoScope 6 Automotive software
Topic: probe for fuel ethanol percentage sensor
Replies: 4
Views: 176

Re: probe for fuel ethanol percentage sensor

Hello ,
Input units for PICO can only be:
- microvolts;
- millivolts;
- volts;
- kilovolts;
You have an output signal - hertz.
It seems you can’t just create a probe for your sensor.
It is possible to create a script, but it is more complicated.
by kona
Wed Sep 04, 2019 2:22 pm
Forum: Diagnostic discussion
Topic: TOP ISSUE...
Replies: 14
Views: 785

Re: TOP ISSUE...

....... Your evaluation was made on engine at idle or on engine engaged by starter?Here we talk about engine,starter,battery and a lot of cables :lol: Yeah! Here is an example at 285 rpm. The time difference is 1.67 ms. On this principle, leakage is calculated in a well-known script. Only there the...
by kona
Sun Sep 01, 2019 8:21 pm
Forum: Diagnostic discussion
Topic: TOP ISSUE...
Replies: 14
Views: 785

Re: TOP ISSUE...

Maybe because is hard to compress the gases, easy to emty the cylinder (Angular speed is variable using the starter)? Using your way you can find a wrong opening/closing of valves on a working engine :o Yes, everything is correct. But the point is the difference in time ... The larger the differenc...
by kona
Sat Aug 31, 2019 4:57 pm
Forum: Diagnostic discussion
Topic: TOP ISSUE...
Replies: 14
Views: 785

Re: TOP ISSUE...

Answer to your question:
vasek wrote:
Sat Aug 10, 2019 1:19 pm
........
Perhaps there is a problem with the mechanical part of the engine.
Either there is air leak in the area of the first cylinder or the PCV system.
........
Your waveform confirms this:
by kona
Fri Aug 09, 2019 8:46 am
Forum: Diagnostic discussion
Topic: Secondary Ignition scope analysis
Replies: 22
Views: 712

Re: Secondary Ignition scope analysis

Technician wrote:
Thu Aug 08, 2019 9:46 pm
.... can be see to be as low as 4 kv and jump back to 15 kv. This did not show up on the last waveforms when tested. Looks to me like the wasted coil pack is at the end ........
By changing the resolution you will get different voltage values. :shock:
The question is what voltage is real ? :?:
by kona
Fri Feb 15, 2019 12:00 pm
Forum: Diagnostic discussion
Topic: wrong timing?
Replies: 2
Views: 408

Re: wrong timing?

It looks like it's not okay.
More than one tooth difference.
by kona
Mon Feb 04, 2019 8:26 pm
Forum: Diagnostic discussion
Topic: Opel Vectra C Z18XER compression waveform doubt
Replies: 10
Views: 1046

Re: Opel Vectra C Z18XER compression waveform doubt

liviu2004 wrote:
Mon Feb 04, 2019 8:08 pm
..... I was wondering if anyone else’ve seen this before. .........
Yes. Right. With throttle fully open and cranking.
by kona
Mon Feb 04, 2019 8:12 pm
Forum: Diagnostic discussion
Topic: Opel Vectra C Z18XER compression waveform doubt
Replies: 10
Views: 1046

Re: Opel Vectra C Z18XER compression waveform doubt

Technician wrote:
Mon Feb 04, 2019 7:14 pm
Not normally any adjustment possible to the valves, they are hydraulic tappets. .........
To make you understand :
by kona
Sun Feb 03, 2019 10:04 pm
Forum: Diagnostic discussion
Topic: Opel Vectra C Z18XER compression waveform doubt
Replies: 10
Views: 1046

Re: Opel Vectra C Z18XER compression waveform doubt

Hi,

Influence Camshafts Adjusters. (If the accelerator pedal has not been pressed ?)

Try repeat measurement at IDEL.