Rebuilt head, car not starting, help!

[hella 325]

I rebuilt the head and put a new HG in. (didnt blow the gasket or anything. just wanted to freshing things up) I put things back together and the car wont start.

When i go to start it it rumbles a little and spits black smoke and vapors out of the exhaust. It just rumbles and rumbles and poofs and poofs.

I have a 255gph fuel pump and MSD blaster coil. those are the only things that are not stock. as far as the engine goes.

-I have confirmed the T|O timing mark on the front wheel and the notch on the cam gear are lined up corectly.
-I have checked the gas, its good
-fuel filter is newish
-fuel is at 40psi when the car sits and 50psi cranking.
-im getting spark
-wires are new Irenland Engineering wires and are in correct order on plugs and dizzy
-new plugs
-dizzy cap/rotor is <2 years old (14k miles no visual damage)
-starter is truning at normal RPM and the battery is at 100%
-I have a new/old wiring harness
-I have tried a 153 and a 173 ecu
-Checked fuses

What could my probelem be? Help me out ye of great e30 knowlage!

[arsevader]

I rebuilt the head and put a new HG in. (didnt blow the gasket or anything. just wanted to freshing things up) I put things back together and the car wont start.

When i go to start it it rumbles a little and spits black smoke and vapors out of the exhaust. It just rumbles and rumbles and poofs and poofs.

Sounds like something isn't back together properly. I'd guess an electrical connector of some form. You are running (or not runnign as the case may be) rich so it's likely Fuel Injection related.

Things to check right away are:

Coolant Temp Sensor - 2 prong FI connector on thermostat housing
AFM Connector
TPS connector
Crank Position Sensor

[hella 325]

I have checked all electrical connections.

When a crank position sensor is dead or dying doesnt it cut off spark? How could it be broken but the car still gets spark?

[arsevader]

I have checked all electrical connections.

When a crank position sensor is dead or dying doesnt it cut off spark? How could it be broken but the car still gets spark?

It cuts both spark and fuel I believe. But are you sure you are getting consistant spark?

James

[hella 325]

yea, it seems i am, i will double check. If i am not getting consistant spark, what could be the causes.

-dist cap/rotor
-Crank position sensor
what else?

[arsevader]

yea, it seems i am, i will double check. If i am not getting consistant spark, what could be the causes.

-dist cap/rotor
-Crank position sensor
what else?

Bad Main relays can cuase no spark and fuel though from your description lack of fuel is not a problem for you. You have too much fuel. Check the values of the coolant temp sensor. Also peel back the boot on the temp sensor connector, the wires have a habit of breaking there causing the symptoms you describe.

James

[hella 325]

the coolant sensor should be a'ok. and even if it was broken the car should still start shoudlnt it?

and i know im getting spark, b/c it rumbles... and the black smoke out the exhaust. I also have checked the wires, and im getting spark.

[arsevader]

the coolant sensor should be a'ok. and even if it was broken the car should still start shoudlnt it?

Depends how many times you've tried to start it and how much fuel was being dumped. Black smoke definatly suggests too much fuel. Check the condition of your plugs, I bet they are fouled for sure now.

Also check to see if your AFM flap is binding.

I had the same problem with my old ETA.

and i know im getting spark, b/c it rumbles... and the black smoke out the exhaust. I also have checked the wires, and im getting spark.

You may be getting spark to the wires but I bet as I said above that your plugs are fouled. Check them and see if they smell like gas.

James

[hella 325]

the plugs were brand new when i tried to start it tonight.

[cthulu703]

Remember to start simple, Are your wires arranged on the dizzy and plugs in the correct order?

[hella 325]

oh yes, i have checked that, ill add that to the list of things ihave checekd.

[AndrewBird]

Are you positive the timing is correct?

[modifiede30]

Are you positive the timing is correct?

I had the same problem with an e28 not too long ago. Turned out to be entirely timing related. I'd check this again and confirm that your crank position sensor is working as it should.

[hella 325]

i have tested teh ohms on teh CPS, but im still not even 10% sure its working. Timing has been the #1 sugjestions throughout my problem. Im gunna replace teh sensor today. Im 100% sure mechanicical timing is correct, but ignition timing may not be. Modifiede30, was the CPS ur problem when u had the prob with the e28?

[NickP]

It sounds like a timing / firing order issue.

The firing order is 1 - 5 - 3 - 6 - 2 - 4

Also you could have the motor 180 degrees out; take out plug #1 and turn the motor until you feel the compression, make sure at this point that the rotor's pointing at the #1 cylinder.