Quote:
Originally Posted by 2010_328i
... Please see the data below:
Ignition timing 2.5* Degree advance for #1 cylinder
Engine RPM 155- 168 RPM
Second Start Attempt:
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Ignition timing 2.5* Degree advance for #1 cylinder
Engine RPM 180- 215 RPM
I hope that the "ignition timing" is the same difference as what you were looking for in cam angle.
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Hi Chris,
That data indicates the DME is receiving input from the Crankshaft Sensor. I CANNOT account for WHY the 1st Start Attempt shows considerably LOWER RPM than the 2nd Attempt. But since you have NO "P0335" code for Crank Sensor signal, & 2nd attempt is > 180 RPM, I don't believe the Crank Sensor signal is causing "Crank, NO Start".
Ignition timing is NOT the same as Cam Timing/ Angle.
That is the timing of SPARK to ignite fuel during Starter Cranking, showing 2.5 degrees BEFORE TDC (Top Dead Center) or just before piston reaches top of its travel in "Compression Stroke". I have NO Idea if that is ACTUAL spark or rather (Probably) "Target" Ignition Timing. If you have a cheap (~ $5 at HFT) Spark Tester that is connected "In-line" between Coil & Spark Plug, that would be easiest way to determine IF there is actual spark:
https://www.harborfreight.com/in-lin...ker-63590.html
You could also use a mechanic's stethoscope (cheap/ basic tool) to listen to one or two injectors for "Click" or pulse during Starter Cranking, to see if dme is pulsing the injectors. The three codes related to Exhaust Cam Sensor, together with "Crank, NO Start", suggest the dme is NOT getting needed Cam Sensor Signal. Lack of Spark & Injector Pulse would confirm that:
https://www.harborfreight.com/mechan...ope-63691.html
You CAN just use a Long-handled Screwdriver, with bit end against injector body, & handle to your ear. "Shade Tree Mechanic" techniques sometimes work better, or at least as well for some things, than expensive Electronics.
Suggestions:
1) Use "Freeze Frame data" to View/ Save/ Post the System Conditions at the moment EACH of the three Fault Codes was saved. That can offer "Clues" of WHY a code is saved. See this description of FF data:
https://www.obdautodoctor.com/tutori...ame-explained/
2) See what "Live Data" your Foxwell is able to Display. See "Complete List" on page 20 of your Foxwell Manual. Look for: VANOS, Intake Cam, Exhaust Cam. Those are possible "Parameters" or labels for desired data. See my INPA "VANOS" Screen from my 3/2007 build N52K, MSV80 dme, attached to NEXT Post. Since the "Target" angle during Starter Cranking is NOT same as Exhaust Cam Angle after engine start & warmup, that LIVE data may NOT be terribly helpful.
3) Report results from above, and we can suggest "Next Steps".
George