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#12
12-12-2011, 12:01 PM
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 Internet , Youtube (a lot of vids on the automotive world in English spoken by people with their own prononciation you have to be careful if you want understand so you learn quicker) a lot of automotive forums like this one and my brother and I searching for the most stupid things we could say. Maybe some porn too but it's quite repetitive lol (i'm kidding  )Et Toi où as tu appris le Français ? I just unstuck the needles ! YEAH ! i've heated up a bit and cooled down quickly in a glass of water 3 times and pulled the needle with a plier BAM ! unstuck !  Tomorrow i will try to crank her up ! I cross all my 20 fingers 
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#13
12-12-2011, 10:20 PM
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By needles I assume you are talking about the injector nozzles? You do not want to get those anywhere near water, any rust in them will really screw the pooch (there's another great English phrase to know  ). There are tools available to clean them, but if they are not moving freely and sticking, they really should be replaced. New nozzles are only a few bucks each... but maybe you are meaning something different by needles. Either way, yes, a sticking injector will certainly cause the issues you were seeing. The hard starting and "choking"/inability to rev up is a good sign of the injection pump getting air blasted into it somehow. This is similar to what I had happen on one of mine a while ago. A good test for this that I discovered then, and should have thought to suggest to you now had I remembered it sooner, is to crack the fuel fittings at the injectors open one by one with the engine running. If you find any that seem to push a bunch of foam and bubbles out all the time when running, then you have identified a stuck injector that is filling up with engine compression/exhaust, and those will cause serious runnability problems. Advancing timing is a good idea too; do that and get the injectors sorted and it should run smooth and clean. Good luck!
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86 745 D24T/ZF 345k lifted 2.5" 83 764 D24T/M46 155k
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#14
12-14-2011, 04:07 AM
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Yeah , the needle in the nozzle was damn stuck ! i found that you call it "needle valve" here it's called "pointeau" . i cleaned them with water  and powerful degreaser then rubing alcohol and i washed them with very fine oil (penetrating oil look a like)i've soaked/ oiled them when i reassembled. i've brushed them once complete and they are shiny Here it's 22 euros a set of needle nozzle each. that's make about 150 euros for six with shipping cheaper where you live ? I knew for the "crack loose" test but i thought i found the problem and cleaned them right after. i didn't think to prove the problem by testing.  For the test the timing is at 0.85 if i'm right. i will check the unload pressure of the injectors and the pattern first and then try to advance the timing to 0.90. The engine ran the time of the vid below ,not more. and still smokes it needs more time to run to see where i have to tune it.
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#15
12-14-2011, 04:11 AM
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the vids now
the problem : [video=youtube;2Lh1IdMQfeQ]http://www.youtube.com/watch?v=2Lh1IdMQfeQ[/video] once solved : [video=youtube;BPCxcWfBIdQ]http://www.youtube.com/watch?v=BPCxcWfBIdQ[/video] here a proof of my great intelligence : [video=youtube;btFulLjBkkw]http://www.youtube.com/watch?v=btFulLjBkkw[/video] So thank you at all of you for your help, it allowed me to think and rethink an other way that mine. that's the way to go further. of course it's not over there are more mods to come.
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#16
01-11-2012, 12:02 AM
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Hah! Sounds fantastic now! Glad you got it all figured out. A couple stuck injectors and retarded timing can certainly make a difference. I like your method of shutting the engine off! I've done that with a piece of wood, but never with my bare hand...
Holding the glowplugs on until after the engine starts would help it start more easily, and using a little throttle and timing advance would help too..... but that would require more than 2 hands, and a guy only has so many. ;-) Funny mistake in your last video. You can even hear it start to crank faster since the compression is so low with the intake blocked like that. Same thing happens to TDI's when the anti-shudder valve gets jammed with carbon and sticks shut... they try to crank with a closed throttle, and it sounds like they have a broken timing belt because they spin over with no compression! Many an intermittent TDI no-start is from just that exact same effect. Glad you figured out what you forgot to do before you got too mad at it! I worked on one guy's TDI Beetle once who had just spent $5000 replacing his automatic transmission because he thought it was slipping and the car couldn't climb hills... I looked at it and didn't get halfway down the block before I knew the throttle valve was the problem. Sure enough it was stuck halfway shut, restricting engine power, engine couldn't rev above 2000 RPM, and so he would hammer the throttle pedal, trans would downshift, felt like slipping to him I guess.... unstuck the valve and it worked perfectly. He must have felt pretty dumb spending all that money rebuilding a perfectly good trans when a 5-minute repair using no parts was all it needed...
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86 745 D24T/ZF 345k lifted 2.5" 83 764 D24T/M46 155k
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#17
01-11-2012, 09:10 AM
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Yeah i felt really stupid and ashamed when i saw i forgot to unlug the intake...
I didn't realized the problem and thought it was a new battery i tried for the first time wich gave a so fast crancking rotation. but no. then i checked my emergency intake plug and saw it was on the intake. Like you i've readen the story of a guy who spent several thousand euros trying to repair an exhaust particulate filter system,computer and refilled the oxyd ceria because each time he shot off the car and came back later the whole car system was resetting itself to zero and restarted the particulate filter regeneration cycle again and again and again..... his problem was just a weak battery. not enough to cause engine starting problems but just weak enough in voltage to stop the computers system at each shut off 
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#18
03-23-2012, 02:14 PM
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what is that you are using as the end cap for your intake, and where may i order one?
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1981 262c bertone. project veggie diesel hotrod 1982 300sd benz. veggie diesel landyacht cruiser dream tow vehicle: 1970's dodge ramcharger 4x4 w/ cummins (maybe some day)
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#19
03-23-2012, 02:45 PM
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the cap on the intake ? it's a cap that you have on the firewall side of the intake on all d24. i've just a spare one that i used as an emergency plug in case of runaway
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#20
03-23-2012, 03:19 PM
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oops. sorry to bother you.
i have never unpacked my d24 intake i bought from someone & i thought that was some special silicone cap you sourced. i finally dug out my d24 parts i bought over a year ago and what do you know...i've got one of those caps on the back of my d24 intake. silly me.
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1981 262c bertone. project veggie diesel hotrod 1982 300sd benz. veggie diesel landyacht cruiser dream tow vehicle: 1970's dodge ramcharger 4x4 w/ cummins (maybe some day)
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