Fuel injector cleaner
#21
03-10-2015, 10:29 AM
Veteran Member
I would say the only way to do a complete fuel system clean on a direct injector car would be to run a can of the cleaner through the gas tank, then SeaFoam style clean the engine (Suck it out of the can with engine vacuum). Then change the oil, and clear the check engine codes.
Last edited by Bigg Will; 03-10-2015 at 11:10 AM.
#22
03-10-2015, 10:31 AM
I meant to say that, as already mentioned, some of the carbon comes from valve overlap when the intake and exhaust valve are open at the same time. Nothing you can do about it, but you can keep the crankcase systems clean and this will help. Dirty oil offgasses all kinds of stunky crud that can stick to valves
#23
03-10-2015, 11:05 AM
Veteran Member
All modern engines have some valve overlap designed in their cam timing to aid in scavenging (Clearing) the cylinders.
#24
03-14-2015, 05:09 PM
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#25
03-30-2015, 06:10 PM
On another note, I just got my oil changed at this local shop that specializes in Jags. I remember them saying they add an additive the first time I got it done, I looked at my receipt and noticed the additive they add is BG110. I looked them up to see how good they were, this video sold me. Now and forever will I use this in all my vehicles.
#26
03-30-2015, 06:30 PM
Veteran Member
And what do you think actuates the valves?
There is overlap but overlap is not valve float.
Those are two completely different phenomena and are related
only by the the fact that they are related to valve train components
and cam profile.
In short they are not the same thing.
There is overlap but overlap is not valve float.
Those are two completely different phenomena and are related
only by the the fact that they are related to valve train components
and cam profile.
In short they are not the same thing.
#27
03-30-2015, 07:50 PM
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#28
03-31-2015, 06:44 AM
#29
11-18-2016, 10:10 AM
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#30
11-18-2016, 04:23 PM
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So if both your bad injectors are on the same bank you will need one bank of four replacements, but if you have one bad injector on each bank then bad luck you need all eight replaced.
#31
11-19-2016, 03:58 AM
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#32
11-19-2016, 07:22 AM
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#33
11-19-2016, 11:44 AM
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#34
07-12-2020, 12:04 PM
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I was told to run a bottle of that BG 44K cleaner with every fill up. I know that's ridiculous but I may run some through every oil change or once a year. The car was already in for an injector clean that I narrowly escaped paying $300 for, and my car is under warranty. Apparently, it's a common issue on the Jags and running that BG cleaner is the best solution. I usually don't go for the magic bottle solution but everyone swears by this BG cleaner the more I research it. I picked some up off of Ebay for about $20. Not many stores seem to sell it.
For the DI motors you will probably want to run some through the intake to clean out the carbon deposits on the ports and valves. Most DI cars suffer from severe carbon build up on the valves where in the older motors fuel would keep it clean. I read through many posts on the Audi forum that noted the RS4 losing nearly 100hp after the carbon starts building up.
For the DI motors you will probably want to run some through the intake to clean out the carbon deposits on the ports and valves. Most DI cars suffer from severe carbon build up on the valves where in the older motors fuel would keep it clean. I read through many posts on the Audi forum that noted the RS4 losing nearly 100hp after the carbon starts building up.
https://www.youtube.com/watch?v=tX-h62PUu0o
Does Royal Purple Fuel Max Cleaner Actually Work (with Proof)?
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