EGR should we all be more concerned

[Greg Roles]

You detonated.
Very bad for the engine I wouldn't do it on regular bases.

Don't plan to! Still, shizzle happens, it's how we learn!

[POLARBEAR666]

My EGR is great. Won't effect my reliability like you diesel boys.

[benough]

So after trawling this thread, things to do to kep the EGR from crapping itself?

1. Drive it hard, flt out, regularly
2. Ask VW to clean it at your next service
3. Use an additaive to possbily clean it out
4. Buy a Provent?

[Greg Roles]

Buy a Provent. You need to minimise either the oil, or the exhaust. The mix makes sludge. Minimising exhaust WILL raise EGT's and may indeed cook your turbo, but apart from the Provent cost there's no downside to removing oil vapour.

[Greg Roles]

My EGR is great. Won't effect my reliability like you diesel boys.

We both know the TSI doesn't have one, stop gloating. So how's that 350nm looking?

[Greg Roles]

All quiet on the TSI front suddenly...

For the record, anyone even CONSIDERING adding a draw through cleaning bottle like I did, you need to remember that a diesel starts it's ignition process with the addition of fuel, so whatever you add to the inlet can indeed become a secondary fuel, cause pre ignition, and possibly destroy your motor. Do NOT under any circumstances add diesel to your inlet, as this will then ignite in the cylinder before it's designed to, and that is bad, melt holes in your pistons bad.

I have noticed some light knocking on flat out acceleration with the metho mix, so it's obviously slightly pre igniting at WOT.

Be careful kiddies!

[Buller_Scott]

awww bloody chunder.....

[Transporter]

Man ProVent description and function.
Very nice power point presentation explaining blow by gases and their effect on engine.
http://www.mediafire.com/file/gnjfwd...0_800__000.ppt

[Greg Roles]

I've thought about the passive cleaner idea even more, and have decided ANYTHING, even specific diesel cleaner in the inlet is a bad idea. If you think about it, any fuel additive in a diesel isn't introduced until the fuel is, so there's nothing but air compressing. Adding an alternate fuel source, such as injector cleaner, metho, pretty much anything, gives the engine something to potentially combust before it's supposed to. It's why methanol and propane are used in diesels as they have such high octane ratings and won't go bang before the injected diesel. I guess running methanol through would be the answer there, but I wonder if it would move the sludge?

A long term water/methanol injection system might be a good thing, both for temps, and for the cleaning effect. Hmmmmmm......

I figure the only way is to remove the manifold from the engine, clean it out, and put it back together dry and clean. Bit of a major task!

[Transporter]

Man Provent works for me on T5 and I'm going to plumb it in the Golf very soon, using copper tubes and straight pieces of silicon hose. There is nothing you can safely use for cleaning due to amount of the sludge there. You would have to shrink yourself and flow in with a brush, a bucket and a mop.