napolean

Hi I'm having trouble starting my car after replacing a blown gearbox. It was a serious gearbox failure at the drags.

I was running on e85 and the engine has been sitting for 3 months after which I replaced the gearbox and reassembled everything. The tank was drained of fuel for the 3 months.

I have since filled up with pump fuel and reflashed my pump fuel map back into the ecu for the restart.

Things I have checked so far:
No blown fuses
No fault codes
I have spark
I have fuel pressure
ECU Immobiliser is switched off
Timing marks all line up

I've poured fuel down the cylinders and got it to fire very briefly then it just dies. I have an evoscan datalog which shows some weird things happening with speed and rpm when I am cranking the car.

Is this signs of a crook crank position sensor despite no fault codes and still having spark???

Modifications are:
- 4G63 Block
- Manley 2.3 litre crank
- Carillo Rods
- Wiseco Pistons 9.0:1 CR
- Ported Head, bigger valves, etc.
- Custom Kelford Spec Cams
- Larger alloy Intake Manifold Port matched to head
- 70mm Throttle Body
- 2.5 inch alloy intercooler piping
- 300x600x75mm FMIC
- AMS 950R T3 turbo kit
- Tial Q 50mm BOV
- AMS Fuel Rail
- Adjustable cam gears
- Greddy Profec B Spec II electronic boost controller
- 3 inch turbo back straight exhaust,
- GM IAT sensor in upper intercooler pipe
- Spoolinup SD Harness
- Omni 4 Bar Map Sensor fitted to intake manifold
- 4 inch intake
- spoolinup COP
- FIC 2250 Injectors
- Walbro 255 lph intank lifter pump
- twin Bosch 044 external fuel pumps and surge tank
- -8 feed and -6 return lines
- Quartermaster twin plate 8 leg clutch
- Tephra V7 96531706 V7 SD mapping

napolean

Datalog.zip

Datalog uploaded.

Bally205

Change plugs

georg1970

we had the same problem not so long ago - crank sensor was the cause of it so I think you are right.