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#1
02-23-2008, 03:11 PM
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Primer Pump Help Please
Question on a primer pump when you pump it is the fuel suppose to spurt out from the pump? it is coming out all over the handle and pouring down the side of the pump it self.
 Thank you,
__________________
1st time Mercedes Owner. 1980 300D 123/130 what do ya expect for $600.00   Needs TLC
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#2
02-23-2008, 03:18 PM
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replace it from the parts link above.
__________________
-Trevor OBK #12 1980 300SD 333,XXX miles - Totaled 1986 Mazda RX-7 212,XXX miles - impounded and auctioned off 2005 Jeep Liberty CRD Limited 33,000- SEGR, Provent, Fumoto
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#3
02-23-2008, 03:18 PM
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__________________
1984 300TD
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#5
02-23-2008, 03:20 PM
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Time to replace it. Replacement is pretty simple and the new style pump is not that expensive. You can probably continue to use the existing pump as long as it is not sucking air when it is screwed down tight.
__________________
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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#6
02-23-2008, 03:35 PM
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Ummmm do I have to replace the whole thing or just the pump part? and I believe it is sucking air I can not keep it running for than a minute and it dies even if i have my foot to the floor.
__________________
1st time Mercedes Owner. 1980 300D 123/130 what do ya expect for $600.00 Needs TLC
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#7
02-23-2008, 04:17 PM
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The little pump unscrews from the injection pump this is a small
item and costs less tan $20.
__________________
80 300D 340K Owned 30 yrs 83 300SD 440K Owned 9 yrs - Daily Driver 150mi/day 02 Z71 Suburban 117,000 15 Toyota Prius 2600 miles 00 Harley Sportster 24k 09 Yamaha R6 03 Ninja 250
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#8
02-23-2008, 05:23 PM
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This is probably a mandatory fix as soon as you buy one of these cars. I'm so mad at myself that I've delayed this on my 300D. Changed my primary today and now I've got a colossal leak at the primer. Probably going to shorten the life of the right motor mount now. Vice grips work well to remove and replace by the way. Otherwise you need a crows foot.
Kevin 1978 300D 1979 240D
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#9
02-23-2008, 05:40 PM
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This is the first thing I did on all five of the MB's I've owned.
I also used vise grips to remove the old one. While you're at it, replace all the fuel lines too.
__________________
83 SD 84 CD
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#10
02-23-2008, 06:03 PM
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Quote:
I hope you dont mean vise grips to replace, please just remove the fitting on the right side and use a wrench on the primer pump flats, it only takes an extra minute or two.
__________________
 1982 300CD Turbo (Otis, "ups & downs") parts for sale 2003 TJ with Hemi (to go anywhere, quickly) sold 2001 Excursion Powerstroke (to go dependably) 1970 Mustang 428SCJ (to go fast) 1962 Corvette LS1 (to go in style) 2001 Schwinn Grape Krate 10spd (if all else fails)
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#11
02-26-2008, 03:37 PM
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ladams, did you order the primer pump like you were suggested before? if not, just go to the dealer or a local euro parts store and get it. it is cheap. 12 bucks online.
__________________
1982 MB 300D-T Veg Power Two tank conversion
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#12
02-26-2008, 04:06 PM
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Yes replace the primer pump.
Before you do however, check the engine mount. If it has been leaking for some time, you may need to replace that as well . . . (from experience - see thread "When bad mounts go worse"
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#13
02-26-2008, 08:00 PM
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a basin wrench works great on the old style pumps. dont know about the new ones...
It is a plumbing tool for installing faucets on sinks from underneath.
__________________
1984 123.193 372,xxx miles, room for Seven. 1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.
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