Diesel Particulate Filter Problems

[GOF]

Originally Posted by mbv

I am most interested in this solution. Can you give the mix of water and caustic drain cleaner? Also what brand drain cleaner - just out of interest? I have a few other questions but they're probably better for a pm. Can't do that yet!

Cheers,
Mark

Just straight caustic soda (a lot cheaper than drain cleaner) will do the trick for carbon and oil deposits, hot water will make it work faster, the stronger the solution the faster it will work too. WARNINING !!! Add the caustic to the water slowly, if you do it too quick it will spit back at you and it causes chemical burns, the same goes with when you put the solution in the DPF. Make sure you have safety glasses on and a source of cold water (garden hose, etc.) on hand to flush off any caustic splashes.
After that it could still be blocked with ash especially if the wrong oil was used, you may still be able to clean it up with CLR or any other calcium removing solution.
Good luck.