Alright R3V. Im 80% stumped. (Now 90%) New development

[Ryann]

^The car broke while going down the road. Unless there's an evil squirrel living under the hood..

[LowR3V'in]

Another dumb suggestion, but recheck to see if you have the firing order
correct. I once mixed up #1 and #6 on the dizzy.

[Ryann]

I know this will sound dumb, but does it have enough gas in the tank? And how old is it? Also check the fuel filter.

Oh it's got PLENTY of fuel. Shitloads of it- filling up the dead holes, fouling the plugs, and spewing out the tailpipe.

Rewire that C191. The injectors fire in two banks- Bank 1 and Bank 2. one bank is cylinder 1,3,5 while the other is cylinder 2,4,6. The C191 connector has wiring separating these two banks, I bet one of those wires went bad, so just rewire the whole thing.

This could be it. I vote swap injectors for the offending holes.

[CorvallisBMW]

I know this will sound dumb, but does it have enough gas in the tank? And how old is it? Also check the fuel filter.

[toointoxicated60]

Agreed ^

[lolcantturn]

Rewire that C191. The injectors fire in two banks- Bank 1 and Bank 2. one bank is cylinder 1,3,5 while the other is cylinder 2,4,6. The C191 connector has wiring separating these two banks, I bet one of those wires went bad, so just rewire the whole thing.

[Wishno87]

Fuel Pressure Regulator?

Good idea. Shouldn't be to hard to change out.

[antil33t]

Fuel Pressure Regulator?

[Wishno87]

Started diagnostics on a 89 325i this morning.

Symptoms are:

White smoke from tailpipe (not billowing but still present)
Runs rough like its only running on a few cylinders
Very little power and revs take a while to raise when you hit the gas
You can pull the plug wires on cyl 2,4,6 and it doesn't effect the way the car runs
Smells like gas pretty bad

Things I have swapped from a known running car:

Plugs. (gaps checked)
Plug wires (still suspect though)
Brand new cap was installed by Mr Ryan (what a gentlemen ;))
Rotor
AFM
O2
ECU
Coil


Things I have done:

Comp test on "dead" cyl Round 170 for each
Sprayed electrical connection cleaner on the injector harness connector


Help me R3V! Tomorrow I plan to install new plug wires and change injectors and injector harness.