Hi,

 

I have a spray bottle of 

 

''Wynns Diesel EGR & Sensor cleaner'' laying around so i thought i'll spray it into the air intake hose after the mass airflow sensor (where i drawed red on the picture, the picture is from google but it's a similar engine). I have a Skoda Octavia Scout 2008 4x4 BMM engine.

 

However, there was no change in rpm despite spraying 1-2 seconds sometimes. It did change raise once or twice but not at all after every spray like in the youtube videos.

 

I revved it up to 2000rpm/minute. It was almost at working temperature but not completely.

 

How come the rpm did not change? It always does it the youtube clips when they do the same procedure. Might it clean without the rpm changing? I stopped in case something is wrong, but if it might be normal that the RPMs doesn't change i can use the rest.

 

 

Edited 15 April, 20233 yr by JonathanOctaviaScout

Edit:

I read a bit more about it.

 

In this video the guy reads from the bottle: ''When the RPM doesn't increase during spraying, stop the treatment and contact your workshop''.

 

And in this product sheet:

https://www.autoserv.co.nz/uploads/files/product-info-5822c3f947b3d.pdf

 

It's written: ''During the pulverization, the RPM can go up or down, this is normal and ensures the product is being applied properly. This rise in RPM is due to the addition of liquid and the change in the air/fuel ratio.''

 

...So, am i not applying it properly by spraying it there? How come the RPM doesn't always increase?

 

53 minutes ago, JonathanOctaviaScout said:

So, am i not applying it properly by spraying it there?

I dunno; do the instructions mention serpentes lubrication?  

?

Snake oil.

 

Your RPM is not changing because you have an ECU with 100 times the processing power of the Apollo spacecraft taking readings from multiple sensors and doing its job of maintaining a steady off load engine speed.

13 hours ago, JonathanOctaviaScout said:

It's written: ''During the pulverization, the RPM can go up or down, this is normal and ensures the product is being applied properly. This rise in RPM is due to the addition of liquid and the change in the air/fuel ratio.''

 

...So, am i not applying it properly by spraying it there? How come the RPM doesn't always increase?

 

Because you havn't started out on the premise that you are reading marketting Bravo Sugar, if it ca, go up or down ask yourself what is inbetween those two states and how the snake oil is clever enough to make an engine speed either rsie or fall but not remain the same.

 

Under many conditions EGR is not commanded, and it sure will not be able to operate without being able to measure the resultant drop in mass airflow (you disconnected the hose remember!) so you might just as well have emptied the tin down the toilet.

Edited 16 April, 20233 yr by J.R.

22 minutes ago, J.R. said:

Snake oil.

 

Your RPM is not changing because you have an ECU with 100 times the processing power of the Apollo spacecraft taking readings from multiple sensors and doing its job of maintaining a steady off load engine speed.

 

Because you havn't started out on the premise that you are reading marketting Bravo Sugar, if it ca, go up or down ask yourself what is inbetween those two states and how the snake oil is clever enough to make an engine speed either rsie or fall but not remain the same.

 

Under many conditions EGR is not commanded, and it sure will not be able to operate without being able to measure the resultant drop in mass airflow (you disconnected the hose remember!) so you might just as well have emptied the tin down the toilet.

Could you clarify what you mean here?

 

I understand the point you mean about the computer being able to compensate/adjust so that it runs smooth despite a change in the fuel/air ratio due to different sensors. And that it may be a "Snake oil" /deceptive product you mean.

 

However, why is exactly my engine not making changes in rpm while all engines in Youtube does and it's considered normal according to the instructions?

 

Bortom Line, is it Still safe to use the other half of the remaining bottle or am i spraying in the wrong place?

Edited 16 April, 20233 yr by JonathanOctaviaScout

I emptied the can anyways, it revved a bit higher a few times but i think the nozzle wasn't reaching far enough. Not sure if i notice a difference after doing the procedure, probably not, but i don't think the engine has so much carbon anyway due to long distances driving.