bluezie
05-02-2024, 08:30 PM
Bit of an odd one, I've just changed the copper seals on my injectors (3.0TDI CDUD) as one was leaking badly, and stinking the car out. That seal had eroded away and was a C profile, the others were still O's but badly eroded, and one other injector had started to blow by.
The odd bit is, all 6 injector nozzles are reverse tapered, ie fatter at the tip. The taper looks almost too perfect for it to be overheating and swelling, as the tapers have straight sides, and are identical on all 6 injectors. The internet says they have had something really bad happen to them, and are knackered, but they work perfectly! The car starts, idles, and drives like a dream, no smoking, no mis-fires or no frequent DPF regenerations.
Having watched on Youtube others changing their injectors, they all seem to be tapered, so are these really odd injectors with tapered nozzles, or is there something inherently wrong with this engine which causes them all to swell at the tip, but still work perfectly?
The odd bit is, all 6 injector nozzles are reverse tapered, ie fatter at the tip. The taper looks almost too perfect for it to be overheating and swelling, as the tapers have straight sides, and are identical on all 6 injectors. The internet says they have had something really bad happen to them, and are knackered, but they work perfectly! The car starts, idles, and drives like a dream, no smoking, no mis-fires or no frequent DPF regenerations.
Having watched on Youtube others changing their injectors, they all seem to be tapered, so are these really odd injectors with tapered nozzles, or is there something inherently wrong with this engine which causes them all to swell at the tip, but still work perfectly?