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#76
08-03-2004, 05:40 PM
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Gsxr, I realized that the intake manifold might not be sealing immediately after that sticking-throttle ordeal. Fortunately I only drove it for a few minutes around the house. At the time of the first installation I thought it's supposed to go under because after I replaced all the glow plugs and the wire angles changed it didn't want to go on top so putting it under seemed to be the only way.
Coach, the 617 injector has a pintle too. I think all injectors have some kind of pintle, but Beagle is the expert on that. That needle-like tip of an injector is actually the tip of the pintle and it doesn't go out any further. When the injector sprays the pintle goes in slightly. Beagle, I learned something new today. I always thought the pintle was there just to control the flow through the nozzle opening. I didn't know the pintle had its own opening. Obviously it's small enough that I didn't notice it even upon close inspection. I guess when my injectors were squirting the pintle was overlifting, right? Is it then correct to assume that if an injector pops without squirting even under slow pressure buildup it works properly?
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2004 VW Jetta TDI (manual) Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL 
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#77
08-05-2004, 01:17 PM
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bump
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2004 VW Jetta TDI (manual) Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL
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#78
08-05-2004, 03:38 PM
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The later style pintles on the 240 nozzles have the cross and flow holes. The preferred way to clean these though, is with an ultrasonic cleaner and not the cleaning pics (very fine wire needles) as they can damage the precision holes.
The 1510, 220, 193 and the later 265 (603 engines) do not have crossholes, but let the longer pintle straighten the flow out. Nice graphic on the flow.
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1984 300D Turbo - 4-speed manual conversion, mid-level resto 1983 300D - parts car 1979 300TD Auto - Parts car. 1985 300D Auto - Wrecked/Parts. ========================= "If you don't know where you are going, any road will get you there". Lewis Carrol
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#79
08-05-2004, 05:31 PM
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I suppose if these old pintles have no holes then my problem is probably fouled prechambers. You see when I had the binding throttle linkage it was already stuck at near full throttle before I even tried to start it and it took a long time to start. I'd imagine all that fuel would foul the prechambers pretty bad, and that's probably would short-circuited my glow plug. My next mission is to diesel-purge the fuel system. If that doesn't help I'm gonna pull the injectors again and retest them. At least now I don't have to remove the intake again unless I get another short-curcuited plug. That intake is a PITA to remove.
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2004 VW Jetta TDI (manual) Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL
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#80
03-18-2008, 11:17 AM
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Bump.
Beware of counterfeit Bosch "Germany" nozzles on the market - see this thread for details: eBay SCAM ALERT! fuelpumpking1 Also, you may find this Bosch document interesting, showing how to clean, calibrate, and test injectors (12MB PDF file) : http://www.w124performance.com/docs/Bosch/PreTech_6_Injectors.pdf Tom, are you still out there? I was curious what your opinion is on the DN0SD314 nozzles... Mercedes replaced the 265's with 314's starting in April 1992.   
Last edited by whunter; 01-26-2012 at 03:53 AM. Reason: attached pictures
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#81
08-30-2013, 04:56 AM
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I'm thinking of rebuilding my injectors.
I have a stock 190D 2.5 automatic from 1986 (602.911) I can get the bosch DN 0 SD 314 cheaper then the SD 265 Is this smart to do, i don't need more power, but less fuel consumption would be nice. I'm doing atm 32,5 mpg, I did 37 mpg
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