Twin Turbo Delorean Not Starting

[billr]

Swapping the polarity of the VR may be what you need to do, but with the shield being used for signal return that may not be possible, as that will have the "shield" floating and just being a greater antenna to pick up noise. What does the actual VR sensor look like, any possibility of cutting off that existing cable and attaching a proper shielded twisted-pair to the sensor?

Try again for a tooth log, I also wasn't able to open that most recent CSV.

[TwinTurboDeLorean]

Currently, I have found an issue that needs attention before all others. The 5 ground wires from MS are too close to other wires and are causing interference, amplified by the pots turned full CCW.
I will move and isolate these and report back on the changes to the interference I have been having. Thank you for the help.

[billr]

That makes no sense to me. Ground wires/planes never cause noise, they shield other stuff from it.

[TwinTurboDeLorean]

That makes no sense to me. Ground wires/planes never cause noise, they shield other stuff from it.

When I move those 5 ms2 grounds near spark olu wires, the gauge dashboard in tunerstudio starts fluxuating and then I hear spark being thrown. When I move those grounds near the fuel injector wiring, the injectors start pulsing....

[grom_e30]

When I move those 5 ms2 grounds near spark olu wires, the gauge dashboard in tunerstudio starts fluxuating and then I hear spark being thrown. When I move those grounds near the fuel injector wiring, the injectors start pulsing....

this does not sound normal may be an idea to go through the wiring make sure its all where it should be

[billr]

Then they probably aren't proper grounds. What pins on the MS DB37 are they connected to? Where do they terminate on the other end? What is a "spark olu wire"?

What size (wire gauge) are those "grounds"?

[TwinTurboDeLorean]

Then they probably aren't proper grounds. What pins on the MS DB37 are they connected to? Where do they terminate on the other end? What is a "spark olu wire"?

What size (wire gauge) are those "grounds"?

Pins 15 thru 19. The wiring harness came from diyautotune, guessing 16-18 gauge wires.
I had them connected to aluminum intake manifold, moving them to aluminum cylinder head. Spark plug wire, autocorrect made it say, olu..

[billr]

Do you have a hefty wire from the same point on the head to the battery negative term? It shouldn't be necessary, but sure can't hurt any.

I still gotta wonder: what is an "olu"? Is that just gibberish generated by the auto"correct" program, or is it a real word?

[TwinTurboDeLorean]

I moved the ground wires from ms2 to the bottom of the back of the driver side cylinder head. No more interference...
see below screenshot of the dashboard while cranking. Green lights! RPMs are being seen....
The engine trys to start with combustion, but will not go any farther yet. See attached engine and tooth logs. Anything that you notice on how I can get closer to it starting up?

[TwinTurboDeLorean]

Tooth log attached

[grom_e30]

is this with the pots set ccw? a normal data log from the data logging menu 'start logging' may shed some light. when cranking are you getting a constant rpm reading or is it dropping to zero?

[billr]

I'm seeing nothing in those last to CSVs. The "engine" one is only the MLV start screen, the other is 16 pages with just a few blue bars at the beginning of each page. Is this just me, or do they not open properly for you too?

[TwinTurboDeLorean]

is this with the pots set ccw? a normal data log from the data logging menu 'start logging' may shed some light. when cranking are you getting a constant rpm reading or is it dropping to zero?

this is with the pots set full ccw. When cranking I am getting a constant rpm reading under 300 rpms.
I will try to data log from the data logging menu and post it here tonight.

[TwinTurboDeLorean]

I'm seeing nothing in those last to CSVs. The "engine" one is only the MLV start screen, the other is 16 pages with just a few blue bars at the beginning of each page. Is this just me, or do they not open properly for you too?

Not sure why it's not working. I select the type of log i want to share, then select the save option, name it and select the location to save to. Click start logging and then stop when finished. Is there something in addition I am supposed to be doing?

[grom_e30]

the engine logger in 'diagnostic and high speed loggers' section is different to taking a normal datalog from the 'data logging' menu, its the normal type you want to do

[TwinTurboDeLorean]

See attached log. Please let me know if incorrect or if you dont see anything..it sounds like it is trying to start, has combustion, doesnt appear to be losing any signal...
I appreciate any help that can be offered.

[turbo conversion]

Just a thought, have you looked at the spark plugs since you have rpm?

They could be gas fouled after all the failed starting attempts.

David

[TwinTurboDeLorean]

Just a thought, have you looked at the spark plugs since you have rpm?

They could be gas fouled after all the failed starting attempts.

David

Do you see any issues with my last log posted that would prevent starting? To remove plugs the fuel rails need pulled. I can do this as long as I dont fuel foul the new plugs. I am looking for confirmation of settings and log results....I appreciate the help.

[slow_hemi6]

I had to go back to the first post to find a msq for this set up.
I am struggling to work out how a basic trigger, oddfire engine is going to run with a trigger angle of 0.40 degrees.
Such a low trigger angle would have it operating in "next cylinder mode" so the trigger point for each signal is used to time the next ignition firing. How's that going to work with the uneven tower spacings of an oddfire engine???
Is it a typo and the setting is meant to be 40 degrees? As always rotor phasing also has to be checked with distributor set up.

[TwinTurboDeLorean]

Current MSQ attached....