View Full Version : over fule , plz help


MR.E36i
01-19-2008, 04:55 AM
HI

over fule in the engine , my engine oil now is mixed with fule

i have chaked all fule line,fule regulator, retainers , change the injectors to smaller

still the same problem , engine start and die but if i disconnect the input fule in fule rail it start well and die due to fule rail empty (normal)
if i reconnect the input fule line to the fule rail it over fule the engine and wont start ?!!!

plz help ASAP ?!!!!

thejlevie
01-19-2008, 12:17 PM
What's the pressure at the inlet to the fuel rail?

Critter7r
01-19-2008, 01:30 PM
I doubt that your oil has mixed with your gas, as the two don't readily cross paths. More likely what you have is a fule pump that has stopped pumping fule.

MR.E36i
01-19-2008, 04:53 PM
What's the pressure at the inlet to the fuel rail?
normal 3.5 bar

MR.E36i
01-19-2008, 04:55 PM
I doubt that your oil has mixed with your gas, as the two don't readily cross paths. More likely what you have is a fule pump that has stopped pumping fule.

'
:nono my fule pump is brand new !

is it the DME chip dies ???? wont contrall the fule :rolleyes

thejlevie
01-19-2008, 08:10 PM
At the risk of sounding redundant, what is the pressure at the inlet to the fuel rail when cranking over the engine?

MR.E36i
01-20-2008, 03:35 AM
At the risk of sounding redundant, what is the pressure at the inlet to the fuel rail when cranking over the engine?

3.5 bar

thejlevie
01-20-2008, 12:44 PM
Fuel pressure isn't the problem. A bad MAF or an intake leak are credible possible causes.

Critter7r
01-20-2008, 02:04 PM
Bad gas? Are you getting spark? Bad MAF's and vacuum leaks don't usually keep a car from starting, it jsut runs like crap once it does start. You need 4 things for an engine to run: fuel, spark, air and ignition timing. You're missing one of those.

MR.E36i
01-20-2008, 02:19 PM
Bad gas? Are you getting spark? Bad MAF's and vacuum leaks don't usually keep a car from starting, it jsut runs like crap once it does start. You need 4 things for an engine to run: fuel, spark, air and ignition timing. You're missing one of those.

Spark,Fule,Air no leak are very good <

my problem is that the injectors are not spraying normal
it's spary's to much fule wich keep the car over fule and engine even wont ( am runing the green injectors)
seems to me the DME Fault but am not sure :help:help

any one had same problem plz guid me :help:help

thejlevie
01-20-2008, 03:00 PM
How do you know that the injectors are spraying too much fuel? As far as I know the only way to check the signals to the injectors would be to look at the pulse width with an oscilloscope and compare that to another car. If the pulse was exceptionally wide the MAF or DME temp sensor could be to blame or if on all the time the DME would likely be the cause.

Now if the injectors were leaking, that would be a problem. You'd have to pull the fuel rail and injectors to see.

kinghawk
01-20-2008, 09:01 PM
I have a feeling that the fuel pump relay or DME relay is bad. Salam !

MR.E36i
01-21-2008, 03:46 AM
How do you know that the injectors are spraying too much fuel? As far as I know the only way to check the signals to the injectors would be to look at the pulse width with an oscilloscope and compare that to another car. If the pulse was exceptionally wide the MAF or DME temp sensor could be to blame or if on all the time the DME would likely be the cause.

Now if the injectors were leaking, that would be a problem. You'd have to pull the fuel rail and injectors to see.


i have pulled the injector out of the intake and inspect them and i found out they are spraying alot *(up normal) , i did not cheake the puls width

i have no problem with the DME ( Rellays are new ) i have chaked the spark as well


i run superchip in my DME ,, i feel that it has been burned or something but dono :shifty

propr`one
01-21-2008, 06:30 AM
what codes is your ecu throwing

thejlevie
01-21-2008, 11:16 AM
When cranking over the engine the injectors should be producing short pluses of fuel with a noticeable gap between pulses (low duty cycle). If the duty cycle is high (more on than off time) I'd think that something is making the DME think that the engine is at higher rpm and has greater mass flow than what would be appropriate for cranking speeds. A problem with the MAF, crank position sensor, or DME might do that.

If the injectors are continuously on I'd say the DME is bad.

MR.E36i
01-22-2008, 06:29 AM
When cranking over the engine the injectors should be producing short pluses of fuel with a noticeable gap between pulses (low duty cycle). If the duty cycle is high (more on than off time) I'd think that something is making the DME think that the engine is at higher rpm and has greater mass flow than what would be appropriate for cranking speeds. A problem with the MAF, crank position sensor, or DME might do that.

If the injectors are continuously on I'd say the DME is bad.

dude
could you plz send me your cell number :)

MR.E36i
01-23-2008, 04:17 PM
any :help:help:help:help:help:help:help:help

thejlevie
01-23-2008, 10:40 PM
I suspect that my cell phone number would do you very little good. With the time zone difference and the large amount of time that I spend every day in places where cell phones aren't allowed it would become a frustrating case of playing phone tag. However you can PM me through this forum. I have more access to the Internet than to my cell phone and the turn around for questions & answers will be quicker.