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  #1  
Old 12-05-2008, 11:29 PM
whunter's Avatar
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ALDA issue threads

An ALDA post you might want to read!
An ALDA post you might want to read!

Boost Gauge
Boost Gauge

? about ALDA removal in a 617 see pic
? about ALDA removal in a 617 see pic

ALDA cap - how to remove?
http://www.peachparts.com/shopforum/diesel-discussion/102814-alda-cap-how-remove.html#post704038

Tweaking ALDA...
http://www.peachparts.com/shopforum/diesel-discussion/138198-tweaking-alda.html#post1023509

I can't get my alda off! How?!
I can't get my alda off! How?!

14.9mpg in my SDL, no, the math is right. and the odometer works too.
http://www.peachparts.com/shopforum/diesel-discussion/112158-14-9mpg-my-sdl-no-math-right-odometer-works-too-post790743.html

performance problems (85 300D turbo)
http://www.peachparts.com/shopforum/diesel-discussion/24796-performance-problems-85-300d-turbo.html#post128721

New to forum, couple of 300sd questions.
http://www.peachparts.com/shopforum/diesel-discussion/106548-new-forum-couple-300sd-questions.html#post733201

Banjo Bolt
OM617 turbo - ALDA boost pressure signal Banjo Bolt and fitting

ALERT: Over Boost Protection Valve OM617 Turbo
ALERT: Over Boost Protection Valve OM617 Turbo

Boost controller.....
http://www.peachparts.com/shopforum/diesel-discussion/72197-boost-controller.html#post451517

OM603 ALDA removal instructions
http://www.peachparts.com/shopforum/diesel-discussion/69422-om603-alda-removal-instructions.html#post431887

ALDA removal........OM603
ALDA removal........OM603

What makes a diesel motor 'peppy'?
http://www.peachparts.com/shopforum/diesel-discussion/73682-what-makes-diesel-motor-peppy.html#post462139

86 300SDL Old/New Trick?
86 300SDL Old/New Trick?

ALDA R&R disassembly, cleaning.
http://www.peachparts.com/shopforum/diesel-discussion/111032-alda-r-r-disassembly-cleaning.html#post777546

ALDA: How can you tell if it's good for sure???
ALDA: How can you tell if it's good for sure???

Last edited by whunter; 08-08-2010 at 08:34 PM.
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  #2  
Old 12-06-2008, 12:52 AM
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Roy, how about don't tweek the alda
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Old 12-06-2008, 01:10 PM
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Theres a reason that it has an adjustable screw and not a fixed setting. There is also a reason for the cap.
You should know the reasons behind both before adjusting the alda.
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Old 12-07-2008, 03:10 PM
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Agree

Quote:
Originally Posted by tobybul View Post
Roy, how about don't tweek the alda
Answer:
This is a last resort, after full diagnosis, and exhausting all other options.


Quote:
Originally Posted by 81300sd View Post
Theres a reason that it has an adjustable screw and not a fixed setting. There is also a reason for the cap.
You should know the reasons behind both before adjusting the alda.
Answer:
* The reason for the cap is to keep it out of sight from untrained persons.
* Before adjusting the alda, you must understand what you are adjusting, what it does, how it affects the system, and what can/will happen if it is damaged and/or mis-adjusted.
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Old 12-07-2008, 03:18 PM
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Quote:
Originally Posted by whunter View Post
Answer:
This is a last resort, after full diagnosis, and exhausting all other options.




Answer:
* The reason for the cap is to keep it out of sight from untrained persons.
* Before adjusting the alda, you must understand what you are adjusting, what it does, how it affects the system, and what can/will happen if it is damaged and/or mis-adjusted.

Exactly, I also beleive a big reason for the cap is warranty.
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Old 07-28-2011, 05:27 PM
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Quote:
Originally Posted by 81300sd View Post
Exactly, I also beleive a big reason for the cap is warranty.
I think its more to do with emissions. Just look at all the carburetors that were delivered after some time in the 70's that had metal caps over the mixture adjustments. The emissions police were mandating that because people were messing with the carb mixture settings. More fuel (gasoline) meant more NOX and junk out the tailpipe. The same thing happens with diesels if you adjust the ALDA too far you get black smoke from excess carbon due to incomplete fuel burning.

And there was also possible fuel economy that the cars were being touted as delivering. Tweak an ALDA and you will find out that also affects overall fuel usage.

I believe the factory ALDA settings may change over time, a good reason for having access to the ALDA adjustment.
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