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Old 06-02-2014, 09:06 AM
Join Date: Mar 2010
Location: SoCal
Posts: 5
cracked hose on firewall?

While trying to figure out why my main fuel filter is leaking from the top of the bolt, I noticed a cracked hose that is attached to the firewall. I've attached a photo....its right behind the oil filter...can anyone tell me what it is and for? And can I change it out myself easily?

Also, I've replaced my main fuel filter but have some fuel oozing from what seems like the top of the bolt. I've changed the copper gasket directly underneath the bolt, and the black o-ring. When I run the engine, there doesn't seem to be fuel oozing but when I shut the engine off is when a little fuel seems to ooze out at the very top....or thats where I think its coming from. Any suggestions?

I'm a lady and can do a little minor work so any replies, please be specific. Appreciate it... thanks!

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cracked hose on firewall?-81-cracked-hose.jpg  

Last edited by sierra1194; 06-02-2014 at 09:22 AM.
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Old 06-17-2014, 05:02 AM
whunter's Avatar
Join Date: Dec 2003
Location: Metro Detroit, Michigan
Posts: 17,357

for answer
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Old 06-17-2014, 07:11 AM
engatwork's Avatar
Join Date: May 2000
Location: Soperton, Ga. USA
Posts: 12,394
That is just a vent/drain hose for the area underneath the windshield wiper area. Easy to replace by just kinda squeezing it closest to the firewall and easing it out.
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Old 06-17-2014, 09:19 AM
toomany MBZ's Avatar
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Join Date: Nov 2006
Location: central Va
Posts: 7,820
For the fuel issue, tighten the bolt a bit more.

You have an early style set up, that crush washer is supposed to make a seal between two non machined parts. Being a soft metal, it will deform into any less than flat areas.

What car are you referring to?

Search this site for a replacement for that drain hose.
83 SD

84 CD
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Old 06-17-2014, 02:52 PM
Diesel911's Avatar
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Join Date: Sep 2007
Location: Long Beach,CA
Posts: 29,955
On the Fuel Filter Bolt if it is a Copper Crush Washer take it and hang it on a Wire and heat the Crush Washer Red Hot and dip it in Water and that will soften it.

If that does not work the Filter Housing could be warped, cracked or the surface where the Washer seats is no longer smooth.

I have the item in the Pic listed as a NU-lip bonded aluminum washer. I don't know if that is what Ace Hardware calls them but one of our Members claims that they sell Washers like the pictured one and that it fixed his leaking problem.

Anoter option is go get a used one from a later Model the uses the O-ring on both ends of the Filter Bolt at the Junk Yard.
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cracked hose on firewall?-nu-lip-bonded-aluminum-washer-jun-14.jpg  

84 300D, 82 Volvo 244Gl Diesel
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