Some older n47s (E8x, E9x, E60, X...) died of a high pressure fuel pump failure because of bmw dealerships not properly bleeding the fuel system after routine diesel filter replacements. In this video as well, the starting back up was pretty slow. I replaced my filter and didn't have access to a sufficient scan tool to start the bleeding process, so i just turned the ignition on off about 15 times, with some longer breaks inbetween to let the canbus fully turn off and on again. After that, it started within 5 seconds of cranking. I suppose that taking off the injectors might introduce more air into the system than the replacement of the fuel filter, that I had already filled with diesel, but still, I find it hard to believe that this Bleeding Procedure used here was really working well and sufficient. Perhaps one could do multiple rounds of that program, let the canbus fully go to sleep inbetween or turn the ignition on and off. Having these Horrorstories of capital engine failures due to dry diesel pumps in the back of my mind just really made this last sequence grueling to watch for me personally. The newer pumps in the f series and n47 gen 2 engines might have pumps that are not as prone to fail for that, but i dont know that for sure. But i do have to say that i really appreciate the effort you guys put into this video, it really is very helpful and also very well produced
@@christoph3915 Hey there, thanks for the insight. Replacing the fuel filter is a completely different ball game vs. removing the injectors and rail. This is because it's before the high pressure system. For a fuel filter, you are on the low pressure side of it. So for fuel filter changes, it's quick and easy to prime the system as you don't introduce air into the high pressure side of it. It will long crank for a few seconds and then start up. For doing the valve cover gasket and removing the high pressure system, this is a completely normal priming process and procedure. I have been working on these BMW diesels strictly for the past 7 years now if that adds any credibility and I'm also certified in diesel repair + I have my bachelor's degree in automotive engineering. I do recommend for your next fuel filter change to actually prime the system with a scan tool, turning on the ignition only runs the fuel pump for a split second, it only fully runs when the engine is cranking over or running.
@bradtourt gotta ask about the shop vac attachment hack! DIY? The bore cleaning attachment too is a sweet trick. I'm tearing into my 2017 Dakar Yellow Sport wagon this weekend for this same job +DPF cleaning. Again, thanks for putting this out. That wrap is crazy btw!
@@jibmaster no problem at all man. Yes definitely DIY. Feel free to reach out on messenger if you need any help. That wagon is a unicorn! I wish I was able to get my hands on it for a 6 cylinder swap!
Hi Brad could I please get in contact with you regarding your 135d please currently looking into doing the swap and need to pick your brains. Hope to hear from you soon buddy.
I replaced valve cover gasket months ago. After taking injectors out second time for testing they were all covered in oil. is this bad or was the gasket not properly installed. any clues?
I love the process of cleaning the injector bores, very nice 🔥🔥🔥🔥
Prepping to do this job myself soon. This video will be super handy, thanks!
Some older n47s (E8x, E9x, E60, X...) died of a high pressure fuel pump failure because of bmw dealerships not properly bleeding the fuel system after routine diesel filter replacements.
In this video as well, the starting back up was pretty slow. I replaced my filter and didn't have access to a sufficient scan tool to start the bleeding process, so i just turned the ignition on off about 15 times, with some longer breaks inbetween to let the canbus fully turn off and on again. After that, it started within 5 seconds of cranking.
I suppose that taking off the injectors might introduce more air into the system than the replacement of the fuel filter, that I had already filled with diesel, but still, I find it hard to believe that this Bleeding Procedure used here was really working well and sufficient.
Perhaps one could do multiple rounds of that program, let the canbus fully go to sleep inbetween or turn the ignition on and off. Having these Horrorstories of capital engine failures due to dry diesel pumps in the back of my mind just really made this last sequence grueling to watch for me personally.
The newer pumps in the f series and n47 gen 2 engines might have pumps that are not as prone to fail for that, but i dont know that for sure.
But i do have to say that i really appreciate the effort you guys put into this video, it really is very helpful and also very well produced
@@christoph3915 Hey there, thanks for the insight. Replacing the fuel filter is a completely different ball game vs. removing the injectors and rail. This is because it's before the high pressure system. For a fuel filter, you are on the low pressure side of it. So for fuel filter changes, it's quick and easy to prime the system as you don't introduce air into the high pressure side of it. It will long crank for a few seconds and then start up.
For doing the valve cover gasket and removing the high pressure system, this is a completely normal priming process and procedure. I have been working on these BMW diesels strictly for the past 7 years now if that adds any credibility and I'm also certified in diesel repair + I have my bachelor's degree in automotive engineering.
I do recommend for your next fuel filter change to actually prime the system with a scan tool, turning on the ignition only runs the fuel pump for a split second, it only fully runs when the engine is cranking over or running.
Super interesting -- did not know about lubing the hard plastic hoses before reassembly -- struggled with that on my 335d last time.
Thanks bud
@bradtourt gotta ask about the shop vac attachment hack! DIY? The bore cleaning attachment too is a sweet trick. I'm tearing into my 2017 Dakar Yellow Sport wagon this weekend for this same job +DPF cleaning. Again, thanks for putting this out. That wrap is crazy btw!
@@jibmaster no problem at all man. Yes definitely DIY. Feel free to reach out on messenger if you need any help. That wagon is a unicorn! I wish I was able to get my hands on it for a 6 cylinder swap!
how much you got on the odomoter?
Hi Brad could I please get in contact with you regarding your 135d please currently looking into doing the swap and need to pick your brains. Hope to hear from you soon buddy.
Great video! How can I find the store or contact us?
@@cardonajoseph1667 you can write an email to dderepair@gmail.com
Whats the mod on this car? Power figures?
I replaced valve cover gasket months ago. After taking injectors out second time for testing they were all covered in oil. is this bad or was the gasket not properly installed. any clues?
@pavokx there is a gasket between the camshaft set and the cylinder head that has most likely failed.
plastic valve cover not replaced?
@@200duece2 no need to, the gasket replacement is sufficient
The timing of this is perfect! About to tackle both of these projects. DPF cleaning, walnut blasting the valves, intake clean on the list too. Sub’d!
@@jibmaster I appreciate the sub, I'm glad I can help!