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#1
02-02-2006, 07:58 PM
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My cigar hose experience.
Just thought I would add my cigar hose experience to the mix.
I put viton hoses on yesterday cause I run biodiesel. I replaced the cigar hose with a regular one. After I did this the car started making a dull thumping sound, it almost sounded like something was rubbing. The sound was much more pronounced when the car was cold. Today I put the cigar hose back on and the sound went away. I am now a firm believer in the cigar hose.
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Andrew '04 Jetta TDI Wagon  '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#2
02-02-2006, 08:09 PM
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what is the importance of having that hose kinda tapered at both ends, as opposed to running a straight hose?
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1983 Mercedes 300D Atlanta, GA 
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#3
02-02-2006, 08:44 PM
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I have been told it dampens the pulse of the fuel being pumped back to the tank.
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Andrew '04 Jetta TDI Wagon '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#4
02-02-2006, 08:57 PM
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it sounds like some cars are affected and some are not. I ran a 240d with regular hose with no ill effect and its still running that way I think.
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 1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car"
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#5
02-02-2006, 09:48 PM
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Cigar hose on 300D
BioD,
Sorry this is one of those situations where Duct tape is not the answer!  Given the somewhat higher pressures the 300 will produce (over the 240) a normal hose will not 'muffle' the pressure feedback. I suggest you go get the CIgar and monitor it for leaks. 
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#6
02-02-2006, 10:08 PM
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The cigar hose is on, and I will keep an eye on it. The other fuel lines didn't look like the biodiesel had done much to them. I am going to cut them open and see what they look like inside.
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Andrew '04 Jetta TDI Wagon '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#7
02-02-2006, 10:11 PM
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Quote:
the hose should be fine. even on b100 it will last a while. most people are replacing them due to old lines that start to leak after time.
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have no worries.....President Obama swears "If you like your gun, you can keep it 
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#8
02-02-2006, 10:28 PM
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My wrecked '85 had been running on bio for a year with no problems with the hoses, the same with my '84. The '85 has been sitting with bio in the lines since Thanksgiving and has only been started twice and the hoses are still fine. However, on the "biobeater" Datsun pickup we have, the hoses have to be changed more often than you change your socks(no cheesy jokes
).
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Seth 1984 300D 225K 1985 300D Donor body 1985 300D Turbo 165K. Totaled. Donor Engine. It runs!!! 1980 300SD 311K My New Baby. 1979 BMW 633csi 62K+++? Dead odo
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#9
02-02-2006, 10:40 PM
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My 409d did not have the cigar hose, but someone had put a standard hose with a primary filter in its place. I assume the filter was absorbing the pulse. Perhaps it would work for you.
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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#10
02-03-2006, 12:10 AM
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That is a pretty clever idea.
If you order the prefilter for the 115 chassis 240D, you get a straight one as opposed to a 90 degree one. That may be easier to use for this application.
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Palangi 2004 C240 Wagon 203.261 Baby Benz 2008 ML320 CDI Highway Cruiser 2006 Toyota Prius, Saving the Planet @ 48 mpg 2000 F-150, Destroying the Planet @ 20 mpg TRUMP .......... WHITEHOUSE HILLARY .........JAILHOUSE BERNIE .......... NUTHOUSE 0BAMA .......... OUTHOUSE
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#11
02-04-2006, 12:06 AM
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Hey! Thanks for the thought-provoking discussion on this.
My 300SD had had the cigar hose replaced with straight hose, and ever since (although until now, I didn't connect the two) it had a sort of "chuffing" sound at part throttle. Quiet at idle and at WOT(or at least free of chuffing). I read this and thought, hmmm. So tonight, I adjusted my valves. (I had speculated that tight valve clearance might have had something to do with the noise) Chuff still present, though ol' SD was much quicker afterwards. Not having a cigar hose "in stock", i grabbed a Beetle fuel filter (think 115 prefilter) and installed this in the line where the cigar hose had been. NO MORE CHUFFIN! Thanks Mercedesshop! Cigar hose is on the way... Have a cigar, please!
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