Tom came by to - day with some cleaners and I broke out my Pop Tester and tested all seven of his Junk Yard injectors, not a one was any good at all and several were appallingly bad .
Then I dug out my box of Junk Yard injectors and tested all of them, was able to make a set of five decent (good spray patterns, pop between 130 ~ 133 BAR, no droolers) for his '81 300SD that's been sidelined for most of this year due to excessive smoking , hard starting and poor idling .
I also gathered up a set of seven near new BOSCH (France) glow plugs as I know at least two of his glow plugs are bad .
It turns out some of the injectors I'd collected had been rebuilt or shop overhauled at previous times ~ one was a VW/Audi (!) that had the incorrect BAR number covered with a printed band, another was God alone knows what , many different brands of vehicles use BOSCH fuel injection systems so you *can* swap the nozzles, shims and springs to make them work n whatever vehicle you're working on but I'm a picky Junk Yard dog and I really dislike mixed brand / number parts so I'll prolly trade them in on some rebuilts or something .
Of late the '82 240D has been idling poorly and smoking fuel at idling so I decided to yank all four injectors and test them and the four 240D injectors I bought in the Albuquerque Self Service Yard , all in my '82 were off spec. , two were droolers with crappy spray patterns , two of the Albuquerque injectors were passable , two were horrible, no wonder the car had a freshly installed rebuilt starter motor and new glow plugs ~ I got those too .
Anyway , I took the best four injectors from my set of eight and installed them, replaced the dirty (yes,AGAIN) clear plastic fuel screen, primed the system and fired it and and Lo ! it idles smoothly again , has vastly improved throttle response and best of all : MORE POWER ~ always a good thing when working with a low power (? 50HP ?) four cylinder engine .
I'm jazzed to say the least, SWMBO's car should now get better fuel economy and not stall on the cold starts as it's been doing occasionally for several months now .
Don't think I'm done here yet 'cause I'm not ~ none of yhe turbo injectors pops @ the correct 135 BAR and the NA injectors all pop slightly under 115 BAR .
They have to be *perfect* for the car to run really sweetly .
I know a guy who'll clean and shim me a set of my old injectors to within 5 # of each other, I need to collect some more cores before I do this .
Miserably hot and humid in Los Angeles to - day but I'm pleased with the works done =8-) .
-Nate
Posted by: vwnate1@yahoo.com
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