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my 83 300sd has now power from take off HELP - Printable Version

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my 83 300sd has now power from take off HELP - turbodanjr - 05-16-2012

\i have a driveway uphill and when i take off in the morning it barley makes up the driveway what could be wrong i have plenty of boost any help is appreciated


RE: my 83 300sd has now power from take off HELP - larsalan - 05-16-2012

clogged primary filter? Have you done any investigating? Usually the problem is fuel or air, right?
How does the motor start/run?


RE: my 83 300sd has now power from take off HELP - sassparilla_kid - 05-16-2012

Is the engine warmed up before you try leaving? Diesels like to be really warm before they start making any power


RE: my 83 300sd has now power from take off HELP - willbhere4u - 05-16-2012

check that the ALDA is adjusted and the line to it is clear it starts on the back of the intake manifold and run to an over boost solenoid and then to the top of the injection pump make sure the banjo bold on the intake is clear and not full of gunk!

I always bypassed the solenoid on the fire wall and run the line strait from the intake to the ALDA


RE: my 83 300sd has now power from take off HELP - turbodanjr - 05-16-2012

(05-16-2012, 03:46 PM)willbhere4u check that the ALDA is adjusted and the line to it is clear it starts on the back of the intake manifold and run to an over boost solenoid and then to the top of the injection pump make sure the banjo bold on the intake is clear and not full of gunk!

I always bypassed the solenoid on the fire wall and run the line strait from the intake to the ALDA

how to adjust the alda i just cleaned the lines and made sure everything is tight besides the takeoff the engine runs perfect and gets 30 mpg i put new fuel filters on it also


RE: my 83 300sd has now power from take off HELP - Hercules - 05-16-2012

Very common complaint,and more with the 126 chassis (heavier) and most are slow at best under that condition. If it runs good after warm,after checking all normal service procedures. Adjust the ALDA,(Engine fully warm),quickly rev engine to 3-4 thousand rpm while watching smoke from tail pipe,DO NOT HOLD RPM,let off.adjust screw up intill heavy black smoke ,adj.screw down untill loss of power.Looking for some smoke,light grey.(NOTE) listen to engine,there will be a harshness in sound while revving,when rich (smoke)back down untill engine smooths out while reving but before loss of power.
Injection nozzles that spray too fine a mist will cause a loss of power at lower rpms.(o-8mph) 2sec,0-60mph. Does not sound like much,but many complaints. Good luck.



RE: my 83 300sd has now power from take off HELP - aaa - 05-16-2012

Remove the ALDA. If the problem goes away, then you know it was bad. Afterwards, I'm not sure how adjustable it is if it was causing that big of problem. You can shim it with washers (there might be a washer under it already, that you can use to match sizes), or you can find a replacement ALDA.