Over the years I have lost count of egr, map issues that I have had to clean and sort out.
Two procedures that have become apparent on all Jtd's to prevent having to clean them often for me are...
1. Using a multi-tool like a dremel with a smoothing, grinding bit on the rough casting marks inside the egr valve to smooth it out.
No rough surface, nothing for the carbon soot to stick to initially
= no build up and blockages
2. Taking the time to find the root cause to the problem... Remove all the turbo pipes and intercooler and cleaning them out thoroughly. Oil has a habit of settling in the pipes and intercooler... But where is it coming from?
Possibly a worn bearing oil seal in the turbo itself
It is never a great amount but enough to coat everything after the turbo over time.
The carbon soot itself isn't necessarily a problem, it's normal and should burn off accordingly...
However, when that carbon soot mixes with leaking oil vapour in from a hot intercooler that in turn, cools down and ends up sticking to your induction items, then the carbon soot has something to stick to again
Always, always a cause to a problem... Sort the cause as well as treating the problem, then you will have no further issues
Which leads to the question why oil leaks past the turbo bearing seals?
Easy answer...Refer to the correct procedure on letting a turbo driven engine tickover for a few minutes before turning off the engine after a spirited drive. Allowing the spindle to wind down to idle speed and letting the oil cool down around it. Then the seals don't harden, crack and don't leak... But how many turbo diesel owners neglect to do this?
Given the amount of members who haven't owned jtd's from new and bought them used then it's down to the original owner who neglected the correct procedure. That's why some jtd owners suffer more carbon build up issues than others.
You don't have to go crazy and replace or rebuild the bloody turbo...
Just be mindful that seals can go soft again and seal with proper procedure over time if it isn't too bad a leak initially. But cleaning the system upwards will slow the build up process considerably
Then, there is your answers
Bring back Tapatalk !!!