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#1
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Disconnected vac line on 87 300SDL...
Does anyone know what this vacuum (?) valve is for?! The car supposedly has had this valve disconnected by the previous owner... see the pic below plz. Is that something that used to hook to the EGR valve?
The car is a 1987 300SDL...
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1987 Mercedes 300SDL; SOLD 1985 Mercedes 300D; SOLD 2006 Honda Pilot - wife's ride; 122K; 1995 Toyota Land Cruiser - 3X locked; 182K |
#2
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that's ALDA
Without the line connected, you'll have no boost enrichment below about 2600 RPM, making the car perilously slow off the line. It doesn't "hurt" anything, but it's far from correct.
It's not a VACUUM line, it's a pressure line. Sorry about the spastic photo editing--tried to make it smaller (for disk) but preserve necessary details.
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James Marriott 2003 Buick Regal 1983 300D (228k, frau Auto) 1996 Suburban K2500 (192k, 6.5 turbo diesel/4WD towmaster 10,000) www.engineeringworks.biz 1987 300SDL junker 170k 1982 300SD junker, 265k |
#3
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Where should that feed from!?
Quote:
I've read however, that you COULD remove the ALDA all together and still be ok... it seems in this case the ALDA is gone all together... what does that mean then?!
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1987 Mercedes 300SDL; SOLD 1985 Mercedes 300D; SOLD 2006 Honda Pilot - wife's ride; 122K; 1995 Toyota Land Cruiser - 3X locked; 182K Last edited by MercFan; 11-05-2009 at 06:28 PM. |
#4
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Quote:
See GSXR's sweet rightup on help for a 603A ALDA. You will need a 27 and 30 mm wrench for superEZ (tm) tuning.
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James Marriott 2003 Buick Regal 1983 300D (228k, frau Auto) 1996 Suburban K2500 (192k, 6.5 turbo diesel/4WD towmaster 10,000) www.engineeringworks.biz 1987 300SDL junker 170k 1982 300SD junker, 265k |
#5
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How about this...
How about this post from Brian Carlton on the subject of removal of ALDA - it seems that this car has had the ALDA removed - which is precisely what Brian and others advocate....
ALDA removal........OM603 I'm going to read the whole thread - will take me some time - it's a long one but I'm feeling a bit better about it than a minute ago...
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1987 Mercedes 300SDL; SOLD 1985 Mercedes 300D; SOLD 2006 Honda Pilot - wife's ride; 122K; 1995 Toyota Land Cruiser - 3X locked; 182K |
#6
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Quote:
Also, be understanding of the fact that you have no overboost protection..........if the wastegate sticks closed, or the wastegate hose fails, the engine will get excessive boost pressure and possibly damage the head gasket. |
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