I still can't figure this out!!

[Jersthecool]

I'll put this as basic as I can so it's easiest to understand. Car ran perfectly before the engine was pulled nothing impacting anything that causes the car to start was changed except for the timing which was set back to the correct setting.
Walbro 255 fuel pump, sti 550cc injectors, 300zx igniter, new bkr7e spark plugs gapped to .030

Engine cranks, will not start, smells of strong fuel, spark plugs wet/black.

Unplug injector connections, car starts and idles for about 3 seconds then dies from lack of fuel.

Pulled fuel rail, turn key to on, injectors don't leak all o-rings are good.

Replace fuel pressure regulator, still will not start unless injectors are unplugged.

Checked to see if ecu lost tune somehow and it did not.

Pulled coilpack #1, cranked motor, gave a tiny blue spark. Pulled all four coilpacks and #2 #3 and #4 gave a strong blue spark and #1 gave no spark. Switched #1 to a known working coilpack and still no spark.

Got igniter tested and is working as it should.



I am beyond stumped as to what the hell is going on! It seems I'm either getting too much fuel or not enough spark which is what I think it is because plug #1 won't spark. The thing is, if only #1 won't spark wouldn't the engine still start and run off of only 3 cylinders or am I missing something?

Please if anyone has any ideas let me know at this point I'll try pretty much anything.

[GroundPerformance]

Check the ECU for error codes. Verify Grounds and connections to CAS,CTS,MAF and others. But I would re check your timing since that is usually the case. GL!

[KiLLeR2001]

Maybe the injectors are being left wide open? Have you checked the resistance on them?

[AZ_BOY]

It sounds like you need to replace OR more likely Readjust the (ACDelco). After you do that and still doing the same. Check you TDC Timing if it in the right
Place.

[ka4life87]

Did u pull out the dizzy?

[Jersthecool]

Ecu is giving code 55 which is all good. Timing is set on both chain/crank and cas. Injector resistance is spot on all around 12.4 I believe it was. Gonna pull off all the grounds and connect them all directly to the negative on the battery and hope it was just not a good enough ground.

[Jersthecool]

Well connected all the grounds in my bay directly to the negative on the battery. Just cranks again, unplug the injectors and it cranks for 2 seconds then starts and this time ran nice and smoothly for about 5 seconds until the car ran out of fuel.

Thinking I might not be getting injector pulse just a solid stream so I'm gonna pull the fuel rail off and crank it and see what happens.

Does anyone know how far off the timing on the cas would have to be off for it to not even start with the injectors plugged in. I lined it up as best as I could see but if it was off 2 or 3 degrees or even 5 at absolute most would that cause it to not even start?

[AZ_BOY]

Buddy just check your timing and the ACDelc and see how it go from there.

[godrifttoday]

Fuel lines backwards?

[Jersthecool]

Checked timing already and it's good. What's the acdelco?? Fuel lines are on correctly getting plenty of fuel.

[Trap Star]

Did you damage any wiring when you pulled the motor out?

[AsleepAltima]

was it answered in the other thread whether or not the ecu was tuned for those injectors?

[Jersthecool]

Soo fucking happy! Pulled the valve cover off and it turns out my whole chain is off a link so my cas wasn't even close to being timed right because I was still setting it for tdc on the pulley that's why it still kinda fired up and didn't sound screwed because the cams and crank were still on time with each other.

Ended up rotating the pulley a bit, timing the cas and it fired up instantly!! Can't even wait to take it out in the morning thanks everyone for all your help!

[AZ_BOY]

Checked timing already and it's good. What's the acdelco?? Fuel lines are on correctly getting plenty of fuel.

Sorry it's brian crower cams
http://i44.tinypic.com/349ayax.jpg