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  #1  
Old 08-26-2005, 03:57 AM
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Changing the fuel filters

Hello all- I recently started running B100 biodiesel in the car. It starts easier and runs more efficiently--- i couldn't be happier. I AM concerned however, about the need to change the fuel filters. From my understanding, there is one under the hood, then one in the tank. Am i correct? Do I need to replace both then? I sure hope not...i'd rather rebuild the transmission than take out a fuel tank again...

BTW it's a 1986 190D 2.5
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Old 08-26-2005, 04:43 AM
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I know on the earlier cars, two are under the hood (easy) and one in the tank. I haven't cleaned the tank strainer, but im sure its not fun.
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Old 08-26-2005, 09:26 AM
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Hey,
Your local parts store should have a HAYNES manual.
They are ok for simple maintenance like this.

Danny
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Old 08-26-2005, 09:47 AM
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Quote:
Originally Posted by dannym
Hey,
Your local parts store should have a HAYNES manual.
They are ok for simple maintenance like this.

Danny
Hey,
Have you ever seen a Haynes Manaul for the 190 Diesel?
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  #5  
Old 08-26-2005, 10:22 AM
Craig
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Quote:
Originally Posted by tangofox007
Hey,
Have you ever seen a Haynes Manaul for the 190 Diesel?
I have a Haynes for 123 Diesels (special order from chain bookstore about 4 years ago). It actually lists an available manual for 190 gassers, but not for diesels).
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Old 08-26-2005, 10:25 AM
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This will show you how to replace the secondary filter.
http://skinnerbox.steaky.org/Service/W123/w123CD2/Program/Engine/615/07-245.pdf

The primary filter is a clear inline filter thats easily found. Unless it's covered in crud.

Just follow the fuel line from the secondary filter.

Danny
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  #7  
Old 08-27-2005, 12:30 AM
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Well, I have the Haynes, and it was about as clear as mud. I am glad to hear however, that there is a possibility that they are both under the hood
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  #8  
Old 08-27-2005, 03:36 PM
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I ran bio in my 82 Chevy Diesel and found that the tank strainer got plugged with fat from using french fry oil. I would suggest removing the tank strainer altogether. That way you can change the filters when they plug and not have to get down and dirty to change the tank strainer. I was running 50/50 oil and Diesel. I strained the oil to 5 mics. but didn't clean the oil to remove the fat. This method did work well in the S. Texas heat but did require cleaning the tank strainer more often that I would have liked. Also, you can't change the strainer on the side of the road as you can the filters.
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