[diesel_mercedes] Fuel Economy Check '84 300CD Automatic

 

Low fuel lamp went on @ 5?? miles , (sorry I forgot to jot it down about 540) , I got up early this morning and ran it hard as I could to Castaic , Ca. , it ran out of breath @ 107 MPH , odd as it's gone *much* faster before .

On  one downhill stretch it was really humming along and puffed out a medium sized soft black cloud of fuel , I assume this was the last of the tiny bits of crud that have been causing the injectors to ' drool ' and cause so much smoking , we'll soon find out .

Anyway , whenever traffic allowed I pinned the throttle and let it run out , when the fuel ran dry and it died I was of course passing a long line of Big Rigs pulling into a Cal Trans Weigh Station , I was able to carefully coast over and between a couple rigs then find a wide bit of pavement safely to the right of the fog line , I stopped and popped the hood and trunk , took off the clear plastic intake screen and was pleased to see the black chunks I saw in it yesterday had apparently been dissolved by the Startron and worked through the system as it supposed to happen .


I still had a very few black bits in there I blew out and re installed it .

I pumped the primer pump until I felt serious resistance , saw no bubbles in the dark plastic hard fuel pipe leading up from the transfer pump to the secondary filter and an injector buzz as it popped , cycled the glow plugs and started it up , ran it briefly @ 3,000 RPM's until it stopped missing , let off the throttle and of course , before I could get my seat belt fastened it died and refused to restart again .

Popped the hood and re primed it again , this time it started quickly and I held it full throttle until it bumped the Rev. limiter @ 5,000 RPM's for 30 seconds , then I ever so carefully waited for a lull in traffic , merged and drove straight to a Chevron Station where I filled it with 22.346 gallons of dark yellow Diesel Fuel  ~ this crap looks like BEER f'chrissakes .

I may have to stop using Chevron fuels for a while .


On the plus side , it never got over 82* C and as soon as I'd pull over it dropped right down to 79* C , that's nice , soon I'll do my annual cooling system flush and fill .


So , I'm now in Valencia , Ca. having gotten 26.2 MPG's out of this last tank full , including the over dose of Startron and a fair lot bit of full throttle acceleration or freeway driving uphills and down ("ItalianTune-Up") .


-Nate

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Posted by: vwnate1@yahoo.com
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