I have the ZD30 with 325k and thinking of doing the egr block. now as i am a nubi...i may ask some basic (dumb) questions so please be patient.
I have been shown where the egr valve is. I have now read about a compressable aluminium plate that can compress and seal. I have been shown to block the vacume line and its actuator closest the firewall. Recently i had injector oil seals replaced and during this process i saw the black gunk built up in part of the manifold. So.... is it wise during the blocking procedure to dismantle the inlet manifold and clean it completely? Is this a layperson with a bit of mecahcnical experience can do?
NExt.... i read about daw valves and needles and things to help stop turbo issues.
I dont understand what dawes and the nedle valve things are all about and if it is neccessary for me to know or do anythng about. People talk of measurements and psi...and temperatures.. i have none of these gauges...are they neccessary or can i just use the kiss principal and just block off the egr and thats that? A mechanic quoted me between 3-500 to do the job including cleaning the manifold by soaking it. Id appreciate some clarity on this if you can please. Cheers
Not that it makes a lot of difference, but what year model is yours, with 325,000k it must be a fairly early one with the ECU that has limited boost control.
The gunk that builds up in the manifold can be problematic and is a contributing factor to the Grenade problem, but only a contributor, cleaning at the same time would be a good idea.
Block the EGR where it meets the inlet manifold at the valve itself, don't worry about anywhere else. It is all quite daunting to start with but not really that hard, allow plenty of time and do things in a logical progression when you start.
Depending on where you live there are many guy's who will help you out for a case, apart from that read all you can, visit peoples "garages", mine is in my signature and read this sticky, post #1 has the actual link to the "Bible" which you can download. http://www.patrol4x4.com/forum/niss...ument-zd30-owners-look-here-31418/index3.html
The order to do things on your vehicle if you truly want to do it, is:
EGT gauge (by doing this first you get to see the effect of all the changes you are about to make, a real eye opener)
Block EGR (clean Intercooler and inlet tract)
Dawes and Needle valve (with needle inside the cab and the dawes bypassing the Vacuum solenoid switch).
If you can afford it, an ECUTalk is a great investment as well for the instant info you get out of the ECU, it also saves on buying other gauges like temp and volts etc.
Also regularly cleaning the MAF with good quality cleaner such as CRC CO Contact Cleaner is a good habit, I do mine every 10,000 clicks.
You will feel a difference in the performance of the vehicle with this work, but after this you can move onto things that really make a difference like exhaust and Intercooler, to start with
Don't worry about asking "dumb" questions, as long as you show you take the time to help yourself there are plenty of people here to answer any questions. We all started out with "Dumb" questions.......