I posted in this forum a few weeks ago with a no-spark issue that I have since solved. I'm now tackling a no-start issue, so I'm starting a new thread.
I have a 1991 Miata with a 2002 VVT engine in it. I rebuilt the engine myself with new pistons, rings and ARP head studs and had each cylinder bored out and honed. The engine is all in the car, wired up, cranks freely, but won't start.
Attached is my current .msq file. It won't let me upload my datalog that I took when cranking, not sure what that's about.
-2002 VVT engine (newly rebuilt)
-NA6 5 Speed transmission
-DW200 Fuel Pump
-Speeduino NA6 PnP board w/ Arduino 2560 Mega
-New NGK spark plugs
-New NGK Plug wires
-Coil Pack+Ignitor from the '91 chassis
-2002 Cam sensor + crank sensor in place of the NA6 CAS
-Base Map for '01-'05 (non MSM)
---Load source ---> MAP
---Crank Advance Angle ---> 5 degrees
---Spark outputs trigger ---> Going Low
---Locked Timing ---> Off
---Use new ignition mode ---> Off (because I am using NA6 coil pack and igniter, not VVT COP's)
---Pattern ---> Miata 99-05
---Trigger Angle ---> -10* ATDC (aka +10* BTDC)
---Trigger Edge ---> Falling (for both primary and secondary sensor)
---Trigger Filter ---> Weak
---Re-sync every cycle ---> Yes
-Fix crank timing with trigger ---> On (https://wiki.speeduino.com/en/decoders/Miata_99)
-If I crank the engine and pull the spark plugs afterwards, they are wet. So I do have fuel.
-I do get occasional ignition events. I'll hear little pops and bangs as I'm cranking the engine.
-My VVT solenoid is not plugged into anything at the moment. I have yet to sort out the wiring for it, so I am leaving it unplugged for the time being (until I can start the car)
-I'm reusing the cam sensor that came with the engine
-New crank sensor
-When I crank the engine, Tunerstudio registers that the engine is cranking and that it has sync as well
Any help would be greatly appreciated!