bmw e46 n42 start problem

[zizole]

my bm 318i e46 with n42 engine first had no compresion but did start after few swings ive redone the engine with new rings and bearings compresion back but wont start i checked for spark on plugs and there was spark on plugs checed feul presure,feul presure fine try to start agian no start checked spark again no spark found out that spark wil be there 1 moment then disapear the other.what could be the problem where do i start looking 4 problem. plz help

 

[CB Diagnostics]

my bm 318i e46 with n42 engine first had no compresion but did start after few swings ive redone the engine with new rings and bearings compresion back but wont start i checked for spark on plugs and there was spark on plugs checed feul presure,feul presure fine try to start agian no start checked spark again no spark found out that spark wil be there 1 moment then disapear the other.what could be the problem where do i start looking 4 problem. plz help

Hi I suspect you timing is out recheck your timing.Regards

 

[zizole]

hi friend ive checked timing,timing is fine.
one moment u can hear there is spark cause it sounds if da car wana start other moment just swing could it be da cranksensor.

 

[zizole]

what makes me confuse is that 1 moment there is spark next moment nothing can it be cranksaft sensor
im cleuless
plz any advice

 

[zizole]

come on guys somebody got to have an idea whats going on

---

:blueCry:

 

[zaleonardz]

Its simple,

You either have spark or you dont.

You can visibly check for spark by removing one of the coils, putting a long flat screwdriver into the coil,

Put your tounge on the screw driver, let somebody film it, and put it on youtube.

:tiptoe:

Seriously, take the screw driver and hold it 1 or 2mm away from a place where you know you have a decent ground. Try and crank, you should see spark.

If you have spark, then check fuel

Fuel can be easily diagnosed by spraying some EZstart into the intake while cranking, if the car takes for half a second, you have a fuel supply problem, fuel pump ect.

If you have spark, and the car will not start using the quickstart or EZStart, then its compression.

Which means either bad timing, or botched repair job, then do a compression test.

If it is no spark, then crank sensor is your most likely cause, but diagnostics will give you an indication.

No spark could also be caused by unpaired EWS's, and a host of other bits.

Try the spark test, if spark test is fine, you are 50% there,

 

[Loom]

Its simple,

You either have spark or you dont.

You can visibly check for spark by removing one of the coils, putting a long flat screwdriver into the coil,

Seriously, take the screw driver and hold it 1 or 2mm away from a place where you know you have a decent ground. Try and crank, you should see spark.

Is this safe, both for the person and the electronics?

 

[zizole]

thanks bro like i told u ive check for spark 1 moment spark other moment no spark ive changed crank sensor and seems like spark problem is solved,no1 suspected crank sensor. evry bm mechy i asked gave me diffrent opinion but dint suspect crank sensor i have spark all the way now. u neva to old to learn.thanks any way:biglol:

 

[Muhammede]

Glad to hear it's sorted [THUMBS UP SIGN]

Sent from my D6503 using Tapatalk