[RMG]

Originally Posted by David1

You can read all you want.

...yeah, yeah, I could tell you're not into reading.

Originally Posted by David1

bmw has to do is change injector timing to spray extra fuel right before the piston is at tdc. It creates a swirl around the intake valve to keep it clean as this is what gm does and it works on thier di motors, but you cant do it with aggressive cam timing.

..of course, of course. BMW might also hire you to supervise the whole process...

[David1]

Yes they should.

[drexplode]

Mobil 1 has a flash point of 230C.

[johmei]

Do you have a link to the inspection camera used? What is the diameter of the camera piece?

[Biz92]

Originally Posted by johmei

Do you have a link to the inspection camera used? What is the diameter of the camera piece?

http://www.amazon.com/Waterproof-End...pection+Camera

That's the one I used. Software is crap but for $20 I can't conplain. It got the job done.

[Biz92]

I know this is an old thread but I did say that I would post results. I decided not to waste my money on chemical solutions so I took my car to Steve Thomas BMW in Camarillo CA to have the Intake valves and ports media blasted (walnut shell). They were not cheap at $1700.00 but they are a top notch operation. I am very happy with the results! My 335 runs stronger than ever. The hesitation that I mentioned is 100% completely GONE! Car runs like never before (since I've owned it anyway).

The media blasting is absolutely everything it is cracked up to be

[123Britt]

I have cleaned my own valves using the DIY Walnut Blast with BMW wand and Intake Vacuum Attachment + My Compressor and HF Media Hopper.

So I feel compelled to state my prescription for gunk build-up on valves:
.
.
1. Agree with proper warm up process -- drive right after starting and keep RPM below 2500 until temp is 180deg

2. OCC is a good thing ONLY if you drive the car hard -- you will catch very little if you drive like a granny. (I have BMS OCC ~ OPTIONAL)

3. PCV Valve -- Change to RB TURBO Valve + Change the Flapper Tube that runs from the Valve Cover to the intake side (More important than OCC) This is a must have item. (I have RB TURBO & NEW FLAPPER)

4. Change oil to High Flash Point and LOW NOACK --( I choose RL 5W-30 at 6% NOACK) Must have item.

5. OCI is between 5-7k MAX (MY OCI is 6K with RL) + You will be amazed at how smooth the car runs when switching from M1 0W-40 , as I was.
LOW NOACK = MUST HAVE ITEM

6. Top tier fuel or Bottle of Injection cleaner every 3k ( I choose top-tier)
This is an Optional item for valves - You pick

7. Drive the car hard -- Oil temps at 250k for 20min at least once a week and it will help burn off deposits (Mandatory Item)

8. Meth Injection will help some by spraying a known solvent on the intake like a port injection or non-DI engines -- so this must be a good thing --- but I don't have ( A good thing for valve deposits)

Doctors Advice: 3+4+5+7 = Healthy Valves

[DJtoad]

Originally Posted by Biz92

I know this is an old thread but I did say that I would post results. I decided not to waste my money on chemical solutions so I took my car to Steve Thomas BMW in Camarillo CA to have the Intake valves and ports media blasted (walnut shell). They were not cheap at $1700.00 but they are a top notch operation. I am very happy with the results! My 335 runs stronger than ever. The hesitation that I mentioned is 100% completely GONE! Car runs like never before (since I've owned it anyway).

The media blasting is absolutely everything it is cracked up to be

$1700?? That's twice what just about every other BMW dealership charges and nearly four times what many indies charge. In fact, you can actually buy the genuine BMW walnut blaster for half that.