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Old 12-30-2003, 01:21 AM
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Join Date: Dec 2003
Location: Los Angeles
Posts: 1
Question 1986 300E Benz

I am having a hard time starting my 1986 300E cold or hot. It will turn over for about 12 to 14 trys and almost start and then the battery dies. I charge the battery and try again and after 2 to 4 times of holding the key to the start it will start. Then its ok for a few days cold or hot and then this starts over again. SO CONFUSSED?
Does anyone think this is the fuel filter thats clogged or somthing wrong with the fuel injection. Where is the fuel filter located so I can change it myself. Any good books or softwere I can order on line to do my own repairs?

thanks for any help you all can offer.
Greg R
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Old 12-30-2003, 03:44 AM
haasman's Avatar
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Join Date: Jun 2001
Location: San Francisco, CA
Posts: 3,097

Welcome to the forum!

The fuel filter is located inboard of the right-rear wheel, under a cover. It is a large silver cylinder, not to be confused with the fuel pump that has wiring going to it.

If it has been a long time since changing the fuel filter, that is a good thing to do. It does sound like a fuel starvation problem.

Additionally, since this is happening hot or cold, you might want to make sure your air filter is clean and while there check the air mass sensor plate. Make sure it is clean as well. If dirty, carefully wipe the plate off and also the surrounding sides.

It is hard to guess what is up .... It could be moisture in your fuel tank ... is the problem temperature/moisture related? You could try adding a dry gas additive.

You might want to verify your cap and rotor for starters.

I am presuming the car has been properly serviced (plugs etc .....)

How many miles on the car?

Keep us posted,

'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)
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