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My mechanic put a can of Wynns EGR 3 through the intake manifold today and the car runs a lot better. Seems to accelerate a little quicker than before, feels livelier. When the EGR 3 was being added the car blew a lot of dark particulate matter out of the exhaust. It was certainly doing something, that's for sure. I plan to have another can added next service. Might do it as a regular service item.
Was it easy to get it in the manifold when it was running??
Not too hard. Unbolt the 4 bolts that hold the intercooler to the frame so you can get a little play and then disconnect the IC hose from the intake manifold. With the car revving at a steady 1500-2000 rpm he just sprayed 1-2 second bursts in the intake hose leaving enough time for the engine to go back to a normal idle before re-spraying. Only problem is that you cant buy this stuff in the shops. If you spray too much in it will cause the engine to run away and might damage it. Wynn's only sell to the trade.
I have read on the web that they are now marketing an EGR 4 product that is less volatile than EGR 3 but I am not sure if they sell to public either. The kit from Wynn's also comes with a bottle of injector cleaner/algaecide.
The other benefit is that it also cleans the valves and cylinder head.
Doing it on the patrol is a bonus and time saver, I must do this before I start going fishing.
explains why hwy miles clean them out. I have about 220k and its never been done.
Ill be removing mine I think to clean it, but will talk to mechanic for his thoughts
I'll take before and after pics as well
I was thinking of removing and cleaning as well but had a look at it and decided the job was a bit too big for me. It looks like a PITA on the CRD's. Asked my mechanic and he was not too keen, said it was a big job and expensive. He then suggested the Wynn's stuff.
I had asked other mechanics about the CRD's and they all said it wasn't as big a problem with the CR's as with the Di's. This included Cross Country who installed my intercooler. They said for CRD's it wasn't worth the effort but I know they pull off the Di manifolds and clean those (friend has had his done). So far this seems to have made a difference so with regular treatment I am hoping to slowly clean the system out (EGR has been blocked).
As a DIY job what sort of time frame are we looking at if all goes well.