Originally Posted by
Robmacca
I've been running this stuff in the missus D4d Prado since new along with a Racor Aux Fuel Filter (2micron filter). Our Prado now has 180+k on it's going fine, but we did replace the injectors at 160k mark as a precaution as the fuel feedback and fuel volume readings were getting a little bit too out of spec. We replaced the injectors with the NEW improved Denso Injectors and the engine definitely runs quieter. I've read and heard about a few issues (from mates) about the Baileys Injectors and went with the Denso ones which were about $450/each. I've since read that some of the issues with the D4d may not be just injector related but also the piston design as well.... Just another thing to worry about :( Anyhow, we have decided to keep the missus Prado for the next 3>5yrs or so (unless something major happens to it). Our Prado doesn't have a Chip or been remapped like some of the other guys that have had engine issues, so I don't know it that is also related.
If u look at the BIG picture and the number of vehicles out there that are running the d4d engines, the failures are only a small percentage but to those that it has happened to it's a BIG thing that should not have happened in the 1st place... Like most manufacturers, I think Toyota quality control has been slipping for a number of years now, but from my limited experience, they are still ahead of most other manufacturers.... Would I buy a NEW Toyota 4WD.... probably not but I probably wouldn't any new 4WD these days either....
Getting back to the CEM product... Does it work? Well I've only ever heard GOOD things about it and from our experience it's been good.... but it is expensive stuff and I do get it for a good price through a mate of mine so I'll continue to use it until that option is no longer there....