missing and shooting flames now...

[bloodshot-e30]

well its no longer find at full throttle i changed the one stuck injector and it cleared up a lot i was thinking about putting all my good green tops in for now.

[jrdeamicis]

Kick your car down into dumb mode.

pull the Cam sensor plug.

Start diagnosing from there.

There will be no adaptation and no vanos.

You have a metering problem (or at least it sounds like it) Since its fine full throttle and not part throttle you will need to work within your open loop / closed loop parameters.

[bloodshot-e30]

Not when the solder joints are intact.

Did you find a problem yet or did magic fix the car?

nope havnt found it yet. didnt get to pull my ECU yesterday we were to busy at the shop...

[rThor432]

the water temp goes nuts on any E30 lol and nah its fine when it decides to miss.

Not when the solder joints are intact.

Did you find a problem yet or did magic fix the car?

[bloodshot-e30]

the water temp goes nuts on any E30 lol and nah its fine when it decides to miss. but this is the 2nd day its been good.! hopefully it stays that way.

[7pilot]

Are your gauges working properly?
If you have a bad connection at one of the DME plugs, the intermittent info drives the DME nuts. You get bucking, surging and big pops out of the tail pipe.
In my case, the water temp gauge would go nuts as the surging started.

m

[bloodshot-e30]

ill pull mine out tomorrow after class and see if i notice anything on the board. it ran pretty good today but meybe it was a fluke... lol

[einstein57]

They just go bad sometimes. Could be from something as simple as a voltage drop. I fried one starting a car with a low battery from not driving it for a couple months. Ran similar to not having a good cps. Swaped the ecu just to elimate that as a cause before I got my hands dirty and it ran perfect. Sometimes the circuit board just gets some surface corrosion and can be fixed by cleaning them up with a toothbrush and some denatured alcohol. Sometimes.

[bloodshot-e30]

^^^ true true i wonder what would have messed up the ECU :/

[325issguy]

Could be the dme like said. Mine ran on 5 cylinders and was nearly impossible to troubleshoot.

[bloodshot-e30]

the swap was done in my 318is, wreck the car, put motor in this car.
new coils new plugs compression #s are all within 3 pounds 227-220psi when the key was on one injector sprayed, replaced and and it didnt spray again (while jumping the pump)

could it be an intermenttent short to ground? and i will be swapping DMEs hopefully next week sometime.

the dme is 413 red lable stock chip. wasnt gonna order my chip till i got it running right. and no its been running sence march.


could having my cam and knock sensors backwards for so long have fucked something up??

oh and im gonna re check fuel pressure tomorrow while driving the car and see if it drops off any (brand new pump as well)

[Adrian_Visser]

The difference between 325 and 318 gas tanks is not your problem...

A short in one of the grounds for the injectors would not turn on all the injectors, this is sequential ignition brah the DME controls each injector individually, even if it was an m20 it would only be opening one bank of three injectors.

Having said that when you tested your injectors did you have the key in the run position?

With the key on the injectors get 12v on the positive terminal from the DME relay so if there was a short to ground in the harness the injector would be open when the key is on.

How about a bit more background info, did you just do the swap and this is first start?

what DME and chip are you running?

What you should do is:

-fuel pressure test
-pull plugs and inspect for condition (fouling from excessively rich mixture)
-swap DMEs
-compression test (maybe bent valves)

That's my two cents.

[bloodshot-e30]

^^^ lol

it has to be a short or the dme. if they didn't leak under pressure without signal then one or more has to get constant signal due a short or bad dme. i think if it was the fuel regulator the engine would choke on fuel but because it only gets it in 1 or 2 cylinders it can keep running.
your old injectors are smaller then the newer one? if yes that can be the reason why it runs better. smaller injector -> less fuel to choke on
my

still did it with the smaller injectors and one of the injectors did leak when i jumped the pump. so i replaced it and it helped so i have 5 more (low mileage) injectors that i can swap out and try those...


also if it was a short from the DME then all the injectors would remain open and flood it completely. IIRC

but i also noticed that this fuel tank is different than my 318is, so how does the fuel get from one side of the tank to the other? my 318 had a metal tube at the bottom of the tank that connected it and im wondering if this might be some of the problem. i kno it might not be the entire problem but not a bad starting point. lol

[mr.vang]

i was expecting a flaming exhaust picture. :(

[treff-7]

alright i popped out the injectors and cycled the fuel pump and the injectors didnt leak any... and im gonna check for a short again later...

any other ideas??

it has to be a short or the dme. if they didn't leak under pressure without signal then one or more has to get constant signal due a short or bad dme. i think if it was the fuel regulator the engine would choke on fuel but because it only gets it in 1 or 2 cylinders it can keep running.
your old injectors are smaller then the newer one? if yes that can be the reason why it runs better. smaller injector -> less fuel to choke on
my