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  #16  
Old 04-20-2004, 10:42 PM
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"Can I tell by looking at it if the fuel filter needs replacing?"

The inline fuel filter, the one next to the injection pump is see through, if it is clogged it will look completely black, if that is the case you need to change it as well as the main filter, the one up next to the power steering pump.

Thanks,
Vahe
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  #17  
Old 04-20-2004, 10:43 PM
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Some prefilters are clear so you can see what is inside them. Some are not clear. Take off the longer of the 2 hoses connected to the prefilter and let the contents of the filter drain into a glass jar, then come back and describe what was in the filter.
Note: If the tank is really full, you may not want to leave the filter disconnected for any length of time as the fuel level in the tank may be higher than the filter hose.
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  #18  
Old 04-20-2004, 10:46 PM
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If you can shine a small flash lite up from underneath the filter, the fluid in it should appear as fairly clear. It might be a little dark amber colored but that is usually OK. If, on the other hand, it is very dark or nearly opaque, it is probably the algae problem. One other consideration about the clear filter replacement. If the tank is fairly full, the line coming from the tank will leak fuel if not quickly covered or clamped off. Not a serious problem, but you need to be ready.
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  #19  
Old 04-20-2004, 10:52 PM
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IF you find the clear/white plastic filter to be clogged AND you are desperate, you can pay about 3x the going price at Autozone. They are $1.70 each here at Fastlane and about $5.50 each at Autozone, but you can get it immediately in a pinch. If the filter is plugged, after you install a new one, you can cut open the filter and examine the contents. If its black and gooey, its algae. Let us know.
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  #20  
Old 04-20-2004, 10:58 PM
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Re: Thanks...can I tell by looking at it?

Quote:
Originally posted by lindajane
Can I tell by looking at it if the fuel filter needs replacing?
Lindajane
Haven't really had any experience with really bad clogged/algae filled filters before so I don't know for sure what to look for. But, I'd say that if the filter looks REALLY dark (can't see through it) I'd change it.
In any case, it might be best to go ahead and change it just for the sake of actually KNOWING when it was last changed...for your own records. Just FYI, there's also another filter close by that might need changing. This one looks like an oil filter (might be silver or white in color) and is located about 12" or so closer to the front of the car. It's also easy to change....just a little messyer to do.

Chris
'85 300SD
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  #21  
Old 04-21-2004, 10:05 AM
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Lindajane -

While you are at it, buy two of those plastic filters. They aren't expensive and you should be carrying a spare. Also make sure you have the tools to change it with you when you depart on the trip. Good insurance.

Cheers,
Wes
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