How to remove & Clean fuel injectors BMW e70 e90 330i 530i X3 X5 engine 5 series

How to remove the fuel rail and injectors on a BMW 3.0i engine
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Thanks for watching this Mark's reviews and Tutorials video. Mark is not a trained mechanic, especially when it comes to torquing bolts. Just a car guy that loves to drive and work on cars. What I do here may not work on your car and I am not intending to give professional advice for you to work on your car. But if you do know a bit about cars then hopefully watching these videos will help you to sort out what is going on with your car. Mark is not liable or responsible for any damage you do or things that happen to your car or yourself.
Cars are complex and dangerous things and not only can you be hurt working on them but you can also do serious and expensive damage to your car.
Cars should be worked on by qualified people, don't over reach.
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[@lindacurtis9730]

In order to actually clean your injectors one cannot spray into the injectors. I know this is a pain, but I'm a marine mechanic, and I remove the injectors one at a time, and hook them up to a battery with a positive and negative wire. Hook up the neg wire with an alligator clamp then touch the positive wire to the injector as this will cause intermittently open the injectors. As the injector quickly opens, spray cleaner through it and this will push out any and all debris. It will also give you a clear and definite indication if the injector is clogged, partially clogged, or working as it should. I may be a woman mechanic but I'm darn good at it 😎

[@quartznation9499]

Linda Curtis which is the negative and positive?

[@user-oh1xg4my6g]

woman or not, you're either a mechanic or not.

[@alessandrorutigliano6378]

@@quartznation9499 it doesn't matter. I just cleaned my two vanos and used a 9v battery to do the same trick. Linda Curtis is a rockstar!!!

[@omarg2050]

can you do this when your car was just on like an hour ago? Or does one have to wait for the engine to be completely cold

[@DrRestorations]

@@quartznation9499 It doesn't have to identify positive and negative pin in testing with a 9 Volt battery, and will work either way.

[@markfosberry4716]

Mark, thank you for your video! My manifold wasn't budging and I really like your ball joint remover as a persuader and will give it a go!

[@jorgemeza9972]

unless you tip the car upside down LOL

[@raybrensike42]

If you are going that far to get to the injectors, one might as well disconnect them from the fuel rail at the top also. The electrical connectors are made with wire and there is a certain way they come loose. Then the injectors will pull out of the fuel rail much like they did out of the manifold at the bottom. The O-rings can get hard in time, so that is why they may be a bit difficult to pull out. New O-rings will be softer and will assemble easier, especially with some liquid as a lubricant. Always use something on O-rings for lube when assembling. With injectors completely out they can be cleaned professionally or something similar yourself if you know how. When you get new O-rings get the brown ones if you can which are made to withstand today's alcohol fuel. 88 cents a piece for mine.

[@SanDoval201970]

i am assuming that on n52 engines you don't have to code in .... or at list in the impa software i have the option dose not show up ?

[@SanDoval201970]

if you know enything about it let me know

[@Marksreviewsandtutorials]

I didn't change the injectors so no coding was required.

[@omarg2050]

Can I use lucas deep clean gdi spray to clean with?

[@ramonsantiagobenitez7062]

Muy buen video, muy ilustrativo. Para la próxima vez puedes llevar los inyectores a un laboratorio de inyectores a que los laven perfectamente y aprovechar todo tu trabajo plenamente. Thanks for your time and work.

[@Marksreviewsandtutorials]

Ramón Santiago Benítez 👍

[@lelekkozje3049]

do you know the size of the filter in this injector? Ten small mesh filters. N46

[@jams3maddij]

What's up with the light.

[@hanynowsky]

Was there any performance improvement?

[@dhalsim-1]

Always best to remove the micro filters first and blow carb cleaner through the injector before replacing filters. Or better again, invest in an ultrasonic cleaning bath. You can buy them cheap enough these days.

[@MrRod0]

To clean buy kit on eBay 20 bucks comes with everything o rings filter baskets hook up 12 volts to the injector leave one wire off hook up your carb cleaner when spraying cleaner touch the other wire so injector is working and spray tell it’s a mist not a stream! To take filter basket out use a screw size not sure them screw it gentle where it catches the basket and pull up out. Install new baskets and o rings to install on car use a little oil on the o ring and push back. Your car will love you!

[@TheSponge945]

What a useless post. Took all that effort to write the beautiful explanation but never posted the link to this “cleaning kit”

[@alessandrorutigliano6378]

@@TheSponge945 he probably forgot. But now I bet he won't post it!

[@izyfication]

Dark vidéo…

[@BROSKOIU1]

That's a dodgy job you've done there, mate...and with that pry bar.... :)))

[@quartznation9499]

Can I use brake klean spray instead?

[@Marksreviewsandtutorials]

I don’t know the ingredients of your brake clean but I believe they are a lot harsher