Engine won't fire

[blind_elk]

Short story long:

Went out to fuel up the night before I was due to go to Phillip Island, Labour Day weekend. Car wouldn't start at servo, discovered missing top starter motor bolt and almost missing lower starter motor bolt . Managed to get lower bolt back in, starter worked.

Drove to PI, drove home, everything fine. A week later, I removed the lower bolt so I could be sure I got the correct size replacement, got 2 new bolts for starter motor, fitted them (after basically removing everything from the engine bay ). Went to start the car (on a jump), just spins over - absolutely no sign of wanting to fire.

I have spark. Pretty sure I have fuel (not confident of fuel pressure though). Don't know about compression (although don't know why it would suddenly disappear). Replaced fuel filter. Pretty sure I haven't disturbed any of the air hoses under the manifold (but how do you tell on these MFs).

Any help / guidance appreciated.

 

Engine is RB25DET, running off a Wolf 3D4+ ECU. Has basically been running fine since installed - this is the first real problem of this nature.

[tridentt150v]

not clear...is the engine actually turning over?  Or just the starter motor?  Cos there is a jump lead from the motor to the solenoid - if the solenoid isn't getting power then the starter will not engage, will spin all day long but not engage.

 

[blind_elk]

I have spark, so at least the exhaust cam is turning the CAS. I'm guessing the rest of the engine is turning on the starter motor.

[blind_elk]

Well, I'm stumped.

Got a compression tester and pressure gauge. I've got 44psi fuel pressure while cranking. Initial (cold) crank gives around 100psi across all cylinders, and final compression 135 / 125 / 130 / 127 / 130 / 130 (note: engine has forged pistons, so presumably will be a bit low on a cold crank). Engine can develop oil pressure during cranking.

According to the Wolf:

     Cranking speed is around 220rpm, cranking volts 11V (Wolf handset).

      Injectors have power, coils are firing, input trigger is firing (ECU lights)

Any suggestions as to where to look next. Anyone available in W Subs Melbourne to give me a hand.

[tridentt150v]

Are your pistons wet from the fuel?  I know you have 44psi, but is it getting to the injectors?  If so then it has to be in the timing somehow.

You need fuel, air, and spark...you say you have all three...so then its timing.  You didn't remove the blocks earth strap did you?

 

[blind_elk]

You can all stop looking for a solution.

When I initially installed the Wolf, I set up a little fuse box to protect things like injectors and coils. While I was installing the new bolts to the starter motor, I've accidentally removed a cable from that fuse box - so there was no power to the injectors.