Direct Injection and Carbon Build-up

[R_Ethug]

Re: Direct Injection and Carbon Build-up

so dump some into your gas? then take the vacuum line going to the FPR and put that inside another can?

then change your oil afterwards?

[RONDAL]

Re: Direct Injection and Carbon Build-up

and spark plugs.

you'll need someone else to keep their foot on the gas because the car will bog and may die while its sucking in stuff

[R_Ethug]

Re: Direct Injection and Carbon Build-up

sweet where can i buy it from? i'll do it in a few weeks as i want to replace my plugs again to fix those misfires before i tear the car apart over winter. muahaha moarr power

[onceover]

Re: Direct Injection and Carbon Build-up

NAPA carries it

[GTI CANADIAN]

Re: Direct Injection and Carbon Build-up

This Carbon Buildup is a direct result of the PCV connected to the intake manifold. A couple of MKV guys have done the "Slashcut" route to exhaust method, which vents the oil vapor out your exhaust instead of through your intake manifold.

Also, A catchcan is supposed to help.

[turbomeyers]

Re: Direct Injection and Carbon Build-up

Here is the reality boys . all . and i meen all fsi cars in the vag will expereance this . it has nothing to do with the fuel . it has nothing to do with driving habits . it has evrything to do with the fact no fuel is run over the intake valves to keep them clean . meth injection will slow down the build up as will a catch tank to colect the crank vapors . but nothing will eliminate it . and the best way to clean the carbon off is this . manual scraping and walnut blasting . or removal of the head and steam cleaning all the carbond' components . the effects are as follows . 1st gear hesitation . loss in fuel economy , random misfire (similar to coil) and overall crappy performance .

[turbomeyers]

Re: Direct Injection and Carbon Build-up

This Carbon Buildup is a direct result of the PCV connected to the intake manifold. A couple of MKV guys have done the "Slashcut" route to exhaust method, which vents the oil vapor out your exhaust instead of through your intake manifold.

Also, A catchcan is supposed to help.

if you disconnect the pcv hose you will get a misfire again as the crank case is sealed and connected to the air system . unless you have the bsh pcv block plate

[GTI CANADIAN]

Re: Direct Injection and Carbon Build-up

Yeah, I'm pretty sure it was done using the BSH Blockoff plate.

[bart]

Re: Direct Injection and Carbon Build-up

there is nothing you can do.

tfsi engines this might be a lesser problem as they run oil temperatures higher by 10C and thats supposed to be enough to keep things clean, but we will see when someone takes one apart...

[Deuce]

Re: Direct Injection and Carbon Build-up

Here is the reality boys . all . and i meen all fsi cars in the vag will expereance this .

So the $64,000 question is: Used Audi RS4 or used BMW M3 Sedan?

[R_Ethug]

Re: Direct Injection and Carbon Build-up

new e90m3 or e46?

if new e90 one then i'd almost have to pop my collar and go m3

although there is a sprint blue rs4 in my building parkade that makes me oh face daily

[Parts Erik]

Re: Direct Injection and Carbon Build-up

Here is the reality boys . all . and i meen all fsi cars in the vag will expereance this . it has nothing to do with the fuel . it has nothing to do with driving habits . it has evrything to do with the fact no fuel is run over the intake valves to keep them clean . meth injection will slow down the build up as will a catch tank to colect the crank vapors . but nothing will eliminate it . and the best way to clean the carbon off is this . manual scraping and walnut blasting . or removal of the head and steam cleaning all the carbond' components . the effects are as follows . 1st gear hesitation . loss in fuel economy , random misfire (similar to coil) and overall crappy performance .

QFT

I see it on a weekly basis here, I've also seen some cars multiple times. The latest idea is the oil we use now has an additive in it to prevent this from happening, if it works or not only time will tell... We got the memo last month telling us that our oil from now on will look considerably darker due to this additive, here is the meat of the explanation from said memo.

Recent formulation changes in Castrol engine oil have resulted in a change in appearance of our products with the color being noticeably darker. A darker product color is perfectly normal and continues to represent Castrol engine oil of the highest quality and performance. The change in color is due to the selection of new and improved additive technology to meet the ILSAC GF-5 requirements for better performance, especially in the area of deposit control protection.

Hope this clears things up.


Erik

[b spot]

Re: Direct Injection and Carbon Build-up

Toyota/Lexus took care of this by spraying fuel on the heads which keeps things totally clean from what I hear.

[turbomeyers]

Re: Direct Injection and Carbon Build-up

yep this is true , they hacve a seperate system that keeps the valves clean . I was thinking of making a kit to put on a fsi car to pump some cleaner in the car over the course of a tank of fuel . to see if it cleans the carbon up

[R_Ethug]

Re: Direct Injection and Carbon Build-up

erik thanks for that quote

you guys are now using new SLX oil instead of syntec right? is the VW specific oil

got new edge too which kills syntec but they don't have it in 5w40 weight.. i'm tempted to switch to it in 5w30 but not sure if it'll be too thin for hot ass 2.7