No6 injector pulse drops out on idle

[sm13f6]

hey guys 

 

got a 2007 bf f6 , been tuned and so on blah blah 

 

recently it has been running sh*t on idle ( 5 cylinders ) then come good after 5-10 seconds 

 

just brought up cyl misfire , check it with a noid light and it drops power when plugged into the injector but when you just have the noid light in it keeps flashing with no drop out 

 

iv changed ecu today , and its still doing the same thing , even swapped the no 6 injector and coilpack round and still does the same thing on cylinder no 6 on idle will drop power or earth when plugged in to the injector 

 

anyone have any ideas or had same problem before I burn the thing to the ground haha

 

thanks 

[JETURBO]

The wiring harness or even the injector plug must be suspect then so strip it back and check it out and then 

Give the engine block a new clean earth from the battery and rince and repeat your testing procedure 

[sm13f6]

Yeah I ended up running a new wire from ecu to injector and same thing but it did bring up this fault so im thinking maybe a coil pack wiring problem as I changed coilpacks and does the same and it causes it to cut signal to injector also as a safety maybe ? 

 

P0356 - ignition coil 6 primary secondary circuit 

[JETURBO]

What injectors and what plug arrangement ?

[sm13f6]

1000cc with the plug adaptors but have swapped injectors around and used different plugs and it stays on no6 

[JETURBO]

Have you swopped the adapters around aswell as I've seen the adaptors bugger up from time to time 

 

if you've changed everything around and run a new cables from the ecu direct to the injectors and swopped the ecu out and swopped the coils around id look at the coil harness and look at running some clean new grounds from the battery to chassis/block 

[sm13f6]

Yeah swapped adaptors round and eveb used new ones and same sh*t Haha 

 

Yeah ill suss the coil wiring tommorow and put some new earths on too 

 

So over it haha only does it on idle aswell which is annoying 

[Mufasta]

thread dig - hey mate, did you ever get to the bottom of this?

 

im having the same issue now

[Puffwagon]

Whether or not it has been solved or is this issue in this instance, I'll chuck in 2c worth of info.

 

Injector drivers in the pcm can fail.

[masda74]

looking at @sm13f6 user profile, the last login was 03/02/17 04:08 AM.

so you missed him by 4 days. Hopefully by tagging him, he will login soon and see your post @Mufasta.

 

Hopefully he resolved the issue and will post the solution in here.

Edited 07/02/17 02:22 AM by masda74
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