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#16
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Remember, Safety Third! '99 E300 Turbodiesel, '82 300TD, 1996 12V Cummins Turbo, '94 Neoplan - Detroit 6V92TA |
#17
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#18
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#19
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Yes...we love ALDA transformation stories!
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#20
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It forms before it hits your tank ,may need to look who Im buying diesel from..
http://dieselfueldoctor.com/solutions_explained.html To clear things up a bit. Last edited by chasinthesun; 08-17-2012 at 11:44 AM. |
#21
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"Many people think this material is some sort of microbe, thus in the marine industry, it is most commonly called "algae". While bacteria and other microbes contribute to and accelerate this process, sludge is no more bacteria than milk that has turned into cottage cheese - it's still milk, only in a physically different form -- Diesel fuel forms wax and asphalt, not "algae"."
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#22
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This is an inference you draw but it isn't actually verified. T'ng the boost gauge into the alda line to verify would confirm the inference.
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#23
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Before you do anything else, connect the boost gauge to the line that goes directly to the ALDA. You'll need to use a "T". |
#24
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Not done yet, BUT I removed the ALDA. That did it. Hoooollllllyyyyyy Shhhhhh*******ttttttt. Wow, now I have power. I could actually tell just from the low speed pep coming out of my driveway. Just felt solid, never as before. Touch the throttle and BAM - power. Not sure I am at the 12 sec 0-60 but totally different car. Even more boost on the gauge (probably 14 psi without trying hitting the boost wastegate dump pressure easily).
So now I have to figure out what's exactly the issue with the ALDA or the line to the ALDA. I have a few specific questions. 1) First the obvious question. I know some do this, but with my specific car (93, 2.5 with the turbo wastegate modification) can I just leave the ALDA off? Man, I don't want to put it back, this car is awesome now. What do I need to be careful of? Do I risk doing motor damage or grenading the thing with this ALDA off set up??? 2) My set up on the 1993 has a line directly from the intake to a T that goes to the ALDA and a black plastic line that I think goes to a pressure sensor for the computer just in front of the battery on the passenger side of the car. Since I have the wastegate changeover, I assume that pressure sensor no longer has a function for anything??? Is that a true statement? Can I eliminate that line from the ALDA T and just simply run a clean new single hose from the intake to the ALDA to try and simplify this whole plumbing for the ALDA (the 93 doesn't seem to have the switchover/overboost protection in the ALDA line. I know other W124's have different vac/pressure diagrams from my reading, this one is simpler I think as of the late 92's if I am not mistaken). I assume that pressure sensor was to kill the boost via the turbo in overpressure situations but that is just my thinking, I haven't read that anywhere. 3) I will try to get a boost read on the ALDA line itself when I reinstall (if I have to reinstall ). I take folks comments that that line could have been a problem I guess since my boost read was from a different place off the intake. I will look closer at that the next chance I get. Since there is a T and that pressure sensor line, something could have been leaking my pressure there I totally see your points on that. 4) It was just about dusk when I test drove so I couldn't tell if I had smoke or not, but I don't think it was smoking at all. I had a ton of boost air so maybe it's burning all the fuel. 5) I was reading that shifting could be a problem once the ALDA is removed. It seemed to shift OK, but I need to drive under more normal conditions I guess. I was standing on it tonight. Anyone have problems with shifting after playing with the ALDA? 6) I can try this but may as well ask before I screw it up. Since the ALDA is now sitting on my workbench, can I test the ALDA itself with my mityvac (on pressure setting of course). Should I be able to see the ALDA collapse by testing? Will I risk damaging it by trying to make it work by hand? |
#25
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That is OUTSTANDING! Fun to have a new car, isn't it? I'll wait for some who are knowledgeable to chime in, but I'm very interested in how it works out for you as I have two of these....a 91 and a 92, both with ALDAs still intact.
Quote:
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#26
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As to risk with the ALDA off, AFAIK the only risk is if the wastegate hose were to fail then you'd have an overboost situation. (Perhaps Brian can give you more details). I assume this is still intact with your mod. With some cars this is a metal line (like on my SDL) so no risk of breaking. Haven't been able to identify it on my 91 or 92. If you can identify it, perhaps you can help me find mine.
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#27
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amazingly powerful vehicles with the alda off aren't they... congratulations! the problem with it off is all the black smoke and the speeding tickets. with fuel prices creeping higher and higher, I'd hook it back up, after the line is confirmed clean... I might open her up a 1/4 turn though.
I think all the turbo diesels have the obp valve... the line that's going to the other place should be going to the flying blue saucer... and it's job is to boost vacuum signal to the transmission for shift stability. I'll check my parts car 93 to be sure... I would not test the alda, I'd test the pressure line feeding the alda to be CERTAIN it's totally clear of gunk. you have a boost gauge, if you are going to drive without the alda, you shoud invest in a pyrometer.
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#28
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On the black smoke issue, on my ALDA-less SDL I have learned (to the point where it's second nature) how not to emit smoke. As long as I'm easy on the pedal below about 2400 rpm, I really have no problems.
__________________
14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#29
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I do not know if this helps or not but I have a 92 W124 that had great power and then suddenly lost significantly - we did the gsxr mod and I removed the ALDA and the plunger is moving properly in response to pressure applied at the air (boost ) port. Fuel supply is good throughout the system up to the injection pump.... at this point I suspect the injection pump itself unless there is internal timing in the injection pump that can be adjusted or repaired.. I do not know if this experience reflects on your situation but as your description sounds very similar I thought I would add my two cents.
best regards |
#30
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My ALDA was originally plumbed as I tried to describe in an earlier post. From the intake, it is T'd. One arm goes to the ALDA nipple, the other goes to the battery side and that pressure to electronic sensor. That's it for the ALDA pressure lines. I think the older models (90-91) have an additional circuit that goes from the intake, to the switchover/overboost protection (obp??) then back to the ALDA. At least I think that's the case. My assumption was this was controlled via the computer in the 92-93 and that pressure switch with the ultimate control being the turbo/vac wastegate as installed in the factory original set up. That control this is irrelevent now with my set up. As for the blue saucer effects on the transmission vac, I don't understand how that is accounted for in the 93 so worried I don't fully understand things here. After sleeping on it a night, I am really contemplating whether I can get away (SAFELY for the motor) with leaving the ALDA off. If I have a reliable boost relief line (to the wastegate actuator, that relieves boost at 14 psi as GSXR's design does), I am thinking I should not be in an overboost situation. But again, I am all ears on further advice if I am not fully understanding the system and risks. As for smoke, don't care just want the car to run well and safely. |
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