07-09-2019, 01:52 PM | #1 |
Private
28
Rep 82
Posts
Drives: 2012 BMW 328i Luxury Line RWD
Join Date: Jun 2019
Location: Hamilton, Ontario, Canada
|
Fuel Optimization / Induction Service
Anybody have this done? What are your results?
Apparently, the service cleans the fuel injectors, throttle bodies, air intake, intake valves and ports; removes combustion chamber deposits and corrects the balance of fuel and air in your system. Increases fuel economy. Starts and idles smoother and runs quieter. I noticed a slightly lumpy idle on a few occasions at startup and a slight reduction in fuel efficiency. At 147,000 km, I thought, "why not?" Maybe its my imagination, but idle is unnoticeable now (smooth). I will see if my mileage has improved. |
07-09-2019, 04:11 PM | #2 |
Lieutenant General
8245
Rep 16,086
Posts |
The main gains would come from cleaning the intake valves, which get nasty with carbon deposits. Installing an oil catch can removes the main source of the carbon build up, oil from the crankcase via the PCV. A bottle of injector cleaner every few thousand miles keeps injectors clean.
Last edited by Billfitz; 07-09-2019 at 05:18 PM.. |
Appreciate
0
|
07-09-2019, 04:53 PM | #3 |
Lieutenant General
6659
Rep 15,858
Posts |
Did this include a walnut shell blasting?
Seems the preferred way to clean the valves/ports in DI engines where there is no fuel to assist self cleaning. |
Appreciate
0
|
07-09-2019, 06:17 PM | #4 |
Colonel
1998
Rep 2,499
Posts |
Did you ask exactly what they did? Did they open up your intake manifold and remove your injectors to clean them? Or did they just run a chemical fuel system cleaner and a spray intake valve cleaner (more likely)?
If you're happy with the results, that's good. |
Appreciate
0
|
07-17-2019, 07:27 AM | #6 |
Lieutenant General
8245
Rep 16,086
Posts |
Sounds like they did what you could have done yourself, with this:
https://www.crcindustries.com/produc...-oz-05319.html and this: https://www.chevronlubricants.com/en...m-cleaner.html They also should have used this: https://www.crcindustries.com/produc...-oz-05110.html |
Appreciate
2
Desertnate390.50 CrumbyButter24.50 |
07-17-2019, 01:26 PM | #7 | |
Captain
391
Rep 849
Posts
Drives: BMW 435i
Join Date: Jul 2019
Location: Swansea, IL
|
I would think consistantly runing hight quality fuel with plenty of detergents would be just as effective and really prevent the need for one of these services.
Quote:
In the VW world, this was the only way to clean up the valves. A traditional fuel system cleaning had little/no effect for the reasons I mentioned above. There are some pictures of some pretty cruddy engines on the forums which cleaned up pretty nicely after getting blasted. |
|
Appreciate
0
|
07-17-2019, 02:52 PM | #8 |
Lieutenant General
8245
Rep 16,086
Posts |
Fuel does not pass through the intake valves on direct injection engines, so detergent in the fuel cannot clean the valves. Oil from the crankcase does make its way to the intake manifold and intake valves, via the PCV. That is the source of the carbon deposits that build up on them. Walnut blasting is not the only way to clean the intakes, go to the link I posted, watch the video. It's best to clean the valves yearly, so the carbon build up doesn't get severe enough that walnut blasting is necessary. It's even better to install an oil catch can, which prevents oil from getting to the manifold in the first place.
|
Appreciate
0
|
07-19-2019, 01:42 PM | #9 |
Private
28
Rep 82
Posts
Drives: 2012 BMW 328i Luxury Line RWD
Join Date: Jun 2019
Location: Hamilton, Ontario, Canada
|
Weird all-cylinder misfire fault codes all cleared and after a good highway run in Sport mode, nothing has resurfaced. While at the dealer, I had them do the thermostat, as it gave an intermittent fault, and a coolant flush. I was assured that doing the induction service every 40 or 50km is a good preventative measure to avoid the possibility of the need for walnut blasting.
|
Appreciate
0
|
07-19-2019, 03:28 PM | #10 |
Lieutenant General
8245
Rep 16,086
Posts |
It's not weird at all, the valve cleaner got flushed out of the system and now it's running normally. I bet they didn't do a proper highway run as they should have and that's why you had the problem. I hope you didn't pay too much, what they did cost maybe $15 in materials and a half hour of labor. The only tool required is one of these:
|
Appreciate
0
|
07-20-2019, 12:41 AM | #12 |
Colonel
2589
Rep 2,432
Posts
Drives: 2021 M2C
Join Date: Mar 2019
Location: Claremont, CA
|
|
Appreciate
0
|
07-20-2019, 12:57 AM | #13 |
Banned
4488
Rep 10,473
Posts |
|
Appreciate
0
|
07-20-2019, 08:48 AM | #14 |
Lieutenant General
8245
Rep 16,086
Posts |
|
Appreciate
0
|
07-20-2019, 09:08 AM | #15 | |
Private First Class
25
Rep 110
Posts |
Quote:
^^ This... direct injection engines lack the benefit of being 'self cleaning' with regards to valves. It's also good to make sure you keep the injectors clean and working well, I would say put a bottle of injector cleaner in your tank every few months or so, as these are very expensive to replace in these engines. |
|
Appreciate
0
|
07-20-2019, 10:02 AM | #16 |
Lieutenant General
8245
Rep 16,086
Posts |
The jury is out on the worth of injector cleaner, as all but third world gas has detergent in it anyway. I put in a bottle of Techron every six months because it's inexpensive and can't hurt, even though it may not help. Same reason I take an aspirin every day.
|
Appreciate
0
|
07-20-2019, 10:08 AM | #17 |
Colonel
2589
Rep 2,432
Posts
Drives: 2021 M2C
Join Date: Mar 2019
Location: Claremont, CA
|
|
Appreciate
0
|
07-20-2019, 10:32 AM | #18 | ||
Banned
4488
Rep 10,473
Posts |
Quote:
Quote:
|
||
Appreciate
0
|
07-20-2019, 12:07 PM | #19 | |
Brigadier General
1646
Rep 4,877
Posts |
Quote:
Walnut blasting removes carbon on the intake valves which is a result of oil vapor being sucked back into the intake as part of the PVC system. Only true method of "preventive maintenance" to reduce the need for walnut blasting is the oil catch can. It wouldn't surprise me of the bulk of the benefits you are experiencing was from the thermostat swap. Engine running at higher temps (specially if you have carbon build up) will introduce other negative artifacts (misfires, etc). |
|
Appreciate
0
|
07-20-2019, 12:10 PM | #20 |
Colonel
2589
Rep 2,432
Posts
Drives: 2021 M2C
Join Date: Mar 2019
Location: Claremont, CA
|
Well, no....But my car is brand new so I'm not really worried about carbon deposits.
|
Appreciate
0
|
07-20-2019, 12:18 PM | #21 | |
Banned
4488
Rep 10,473
Posts |
Quote:
|
|
Appreciate
0
|
07-20-2019, 12:42 PM | #22 | |
Lieutenant General
8245
Rep 16,086
Posts |
Quote:
https://www.bobistheoilguy.com/forum...-after-results I suggest you cut to the chase and go to the 9:30 time mark. By no means does the CRC or Seafoam do as good a job as walnut blasting, but they do work. They'd probably work a lot better on engines that hadn't been neglected as long as the ones in the video were to get that much build up. |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|