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  #31  
Old 05-18-2007, 04:31 PM
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Join Date: May 2002
Location: Blue Point, NY
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Quote:
Originally Posted by firemediceric View Post
Brian, can you tell me off hand which steel fuel line on the SD is the supply and which is the the return? I think the top one is supply, but I'm doubting my memory. Also is the clear hose from the spin on filter to the I.P. 7.5mm (5/16") I.D.
The top hard line coming from the tank is the return hose. The cigar hose gets connected to it.

The lower hard line is the supply line and the primary filter hose gets connected to it.

Don't know the size of the clear hose offhand.
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  #32  
Old 05-18-2007, 05:39 PM
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Join Date: Jun 1999
Location: in the Pacific Northwest
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brain carlton

Quote:
Originally Posted by Brian Carlton View Post
Fuel filters don't typically clog so suddenly that the vehicle won't idle. It's generally a slow progression where you can't get maximum power and it gets worse so that you know you must do something.

Here, the engine dies in five seconds and doesn't want to restart.

So, presuming that you don't have bad fuel from a recent fill, my thoughts would tend toward the fuel pump.

Remove the line from the pump to the secondary filter and put it in a container. Crank the engine for 15 seconds and see how much fuel is delivered. I don't remember the exact spec for the pump, but, you must see at least two ounces of fuel........otherwise the pump has failed.
brian is a smart guy he will get through you through this
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  #33  
Old 05-18-2007, 08:01 PM
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1981 300 SD
 
Join Date: Jul 2006
Location: Vero Beach, FL
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Quote:
Originally Posted by Carrameow View Post
brian is a smart guy he will get through you through this
He already has, again.
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1981 300 SD with a Goldenrod water block and Injetor line heaters. EGR is missing

1999 F-350 with HP X-over, Dahl 100 Fuel Filter, Coolant by-pass filter, CCV mod, Tymar intake.

Both on single tank WVO blend
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  #34  
Old 05-19-2007, 03:58 AM
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Join Date: Dec 2006
Location: Tallahassee, Florida
Posts: 22
Paper Prefilter

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Originally Posted by Palangi View Post
Prefilter with a paper element??
I guess it's paper.

It was nasty and I went to the autozoneclubdiscountzparts and asked for the prefilter and I got a new one that looked pretty much like the dirty one, but clean ya know?

Paper looking filter, I guess.

Dan
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86 300 SDL
New odometer gears, new rubber fuel lines, removed and plated EGR, redone underhood vacuum system, BoostValve on the turbo, IPod only sound system, changed a couple of window motors, refinished the console wood, changed a couple of switches, removed welded and replaced my oilpan after I cracked it (driving like an idiot), new glowplugs, new/used glowplug relay, sunroof repaired, antique brass boost gauge on the hood.
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  #35  
Old 05-19-2007, 05:30 AM
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When unsure of your driving range, see if your odometer indicates that you've gone past 400 miles. Usually the cars get around 400 miles at 25MPG but I think the SD has a larger fuel tank. Either way, I wouldn't always trust a new part that's been replaced and would keep an eye for potential problems. Glad to hear you got that sorted out, and nothing worse (stalling in the middle of the freeway) happened.
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  #36  
Old 05-19-2007, 12:55 PM
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L' Résistance
 
Join Date: Dec 2000
Location: Republique de Banana
Posts: 3,496
Quote:
Originally Posted by dan_the_welder View Post
I guess it's paper.

It was nasty and I went to the autozoneclubdiscountzparts and asked for the prefilter and I got a new one that looked pretty much like the dirty one, but clean ya know?

Paper looking filter, I guess.

Dan
I have seen those at AutoZoo. They used to stock the proper plastic mesh prefilter. What they stock now has a paper element. Definitely no good for diesel use. The least bit of water seems to seal the pores of the paper. Car stops running. I wouldn't use those unless you don't mind changing it every week. Around here, Poop Boys still stocks a decent prefilter.
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2004 C240 Wagon 203.261 Baby Benz
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