Cam vs crank waveform
I’ve got a 2005 Audi A3 3.2 engine code BMJ in for repair
No start vehicle
Good fuel pressure -
Crank sensor - ok
Cam sensors - ok
Injector are pulsing
Coils are firing
I’m looking for a cam vs crank waveform to check the valve timing. I’ll upload what I have shortly.
If anyone has a know good I’d really appreciate
Thanks
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So you have spark and fuel?
Have you tried any starter fluid or gas?
Tried the engine to start at least for a second or fraction or second?
Try to capture when cranking, battery voltage drops (mechanical TDC) and ignition time.
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guafa wrote: Hi Ste,
So you have spark and fuel?
yes, confirmed via scope and the wet spark plugs
Have you tried any starter fluid or gas?
no not tried this yet
Tried the engine to start at least for a second or fraction or second?
Try to capture when cranking, battery voltage drops (mechanical TDC) and ignition time.
ill do a relative compression with number 1 ignition primary and Injevtor control capture in the morning
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And not like this known good off a 4 cylinder Honda engine
I’m confused at the 6 sets of 3 staggered peaks from the maf signal
Second image
Yellow trace - low amps clamp starter current
Red trace maf signal
Blue trace no 1 injector control
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- John Curtis
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Making Pressure Differential Sensors (PDA Sensors) for pressure pulse diagnostics.
Currently servicing Central Texas.
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