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#1
11-19-2005, 06:27 PM
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Check valve '85 300D
Is there a check valve on the 300D that could be leaking air into my fuel lines? If so, where is it and what does it look like????
I was told these are usually before the primary filter.... Thanks, AA
__________________
'87 924S '81 280SEL Sold -> 81 300SD - 93 300E w/ 3.2 85 300D- 79 300SD 82 300CD 83 300CD - CA 87 190E 5 spd 87 Porsche 924S "..I'll take a simple "C" to "G" and feel brand new about it..." 
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#2
11-19-2005, 09:09 PM
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just runnin this back up to the top for some hope.......
__________________
'87 924S '81 280SEL Sold -> 81 300SD - 93 300E w/ 3.2 85 300D- 79 300SD 82 300CD 83 300CD - CA 87 190E 5 spd 87 Porsche 924S "..I'll take a simple "C" to "G" and feel brand new about it..."
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#4
11-19-2005, 10:40 PM
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The only "check valve" type thing would be your lift pump.
Are the bubbles coming into the system before the lift pump or after (its that thing with the primer pump on the side of the IP). 
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#5
11-19-2005, 10:43 PM
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There is a check valve built into the bolt that the IP is fed by (the block side of the IP)...it has a ball and spring in any case.
__________________
Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
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#6
11-20-2005, 12:03 AM
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Quote:
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#7
11-20-2005, 12:56 AM
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Quote:
__________________
'87 924S '81 280SEL Sold -> 81 300SD - 93 300E w/ 3.2 85 300D- 79 300SD 82 300CD 83 300CD - CA 87 190E 5 spd 87 Porsche 924S "..I'll take a simple "C" to "G" and feel brand new about it..."
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#8
11-20-2005, 03:06 AM
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Quote:
If that is the case (getting new ones) then you have a pre-filter air leak. Check out the lines under the car and the ones that hook to the tank
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#9
11-20-2005, 12:24 PM
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"Before....because they are entering my primary fuel filter..."
Are you talking about the air in your clear (primary) filter?? If so, thats normal.
__________________
 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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#10
11-20-2005, 02:46 PM
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Quote:
__________________
Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
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