Search found 21 matches

by wiki38andy
Mon Mar 18, 2024 12:31 am
Forum: Diagnostic discussion
Topic: Interesting CAN BUS fault on 2018 Landrover discovery
Replies: 5
Views: 354

Re: Interesting CAN BUS fault on 2018 Landrover discovery

Engine should not cut out for a CAN buss issue. It is a mater of powers/ grounds rather. So, scope them at ECM when engine stalls.
by wiki38andy
Sat Oct 14, 2023 4:26 pm
Forum: Diagnostic discussion
Topic: 2018 Audi RS3 high fuel pressure dropping out
Replies: 10
Views: 17848

Re: 2018 Audi RS3 high fuel pressure dropping out

Nissan QQ 1.3 petrol, HR13DDT engine. Fuel rail pressure/HP pump regulator current during acceleration/deceleration. Double pulses regulator control at low speed/load.
by wiki38andy
Fri Oct 13, 2023 10:47 pm
Forum: Diagnostic discussion
Topic: 2018 Audi RS3 high fuel pressure dropping out
Replies: 10
Views: 17848

Re: 2018 Audi RS3 high fuel pressure dropping out

When the air/fuel mixture enrichment goes beyond flammability point, combustion no longer takes place in cylinder which becomes an air pump. The whole amount of O2 which should have been used in fuel oxidation will pass by upstream A/F ratio sensor(together with fuel vapor) whose signal will show a ...
by wiki38andy
Tue Oct 10, 2023 9:05 pm
Forum: Diagnostic discussion
Topic: 2018 Audi RS3 high fuel pressure dropping out
Replies: 10
Views: 17848

Re: 2018 Audi RS3 high fuel pressure dropping out

Scope the HP rail sensor and monitor the pressure drop for each injector as one or more may get sticky open and bleed the rail. Amp clamp on HP pump regulator and coil 1 sync signal. Post the all 3signals psdata file.
by wiki38andy
Mon Aug 28, 2023 10:42 am
Forum: Diagnostic discussion
Topic: toyota 2.2dcat big smoke, no power
Replies: 1
Views: 733

Re: toyota 2.2dcat big smoke, no power

Cylinder nr3 after CAM signal has lower compression. Incomplete combustion=low power+smoke. Pick up inj nr1 signal with an amp clamp and synchronize it with RCT to find out the faulty cylinder.
by wiki38andy
Thu Jun 15, 2023 8:10 pm
Forum: Diagnostic discussion
Topic: Vibration - 2008 VW Multivan
Replies: 11
Views: 9151

Re: Vibration - 2008 VW Multivan

Compression test and leak down test for each cylinder. Crankcase pressure at idle. Injectors back flow. Knock sensor signal under load. CKP signal under load(gear 4th from 1500 to 3500 rpm)
by wiki38andy
Mon May 29, 2023 9:05 am
Forum: Help me fix my car
Topic: Turn the key, engine cranking but doesnt start, sec time it does
Replies: 11
Views: 8512

Re: Turn the key, engine cranking but doesnt start, sec time it does

I think you have already got to the bottom of it. Could you share with us the fix?
by wiki38andy
Fri Mar 31, 2023 6:48 pm
Forum: Diagnostic discussion
Topic: in cylinder pressure wave form thats got me baffled
Replies: 9
Views: 7004

Re: in cylinder pressure wave form thats got me baffled

Combustion takes place in cylinder.
by wiki38andy
Sat Mar 11, 2023 3:47 pm
Forum: Help me fix my car
Topic: Turn the key, engine cranking but doesnt start, sec time it does
Replies: 11
Views: 8512

Re: Turn the key, engine cranking but doesnt start, sec time it does

Hi Tonnes 1977,
could you keep us update with this interesting case?
Thank you.