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#1
01-09-2012, 05:17 PM
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Air into IP
air into IP
Hello, anybody with fuel leacking from top of IP has experienced air into IP or fuel filter and car difficult to start? My problem started when parking uphill. Then I could not start and I could see air in the pipe going from the filter to the IP. I changed all the return hoses from the injectors but now is even worse. I can see a drop of fuel comming off the #3 valve on top of the IP. Could this be related to air comming into the fuel system? Thanks  
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#2
01-09-2012, 05:21 PM
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Possibly. Is it coming from the fuel line or the delivery valve? It might be hard to tell.
It might be as simple as tightening the hard line. Or, it could be that the o ring or washer for that delivery valve is worn. The delivery valve could also need tightened up. I think the torque spec is 35nm on a W115. Be careful and don't overtighten. Post most info such as year/model and others can chime in with more suggestions.
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1974 240D "Boldie" 170K.- New timing chain/freshly rebuilt IP/replaced valve seals/injectors/upgraded stereo/new Bilsteins with Yokohamas/fresh paint and rocker panels plus lots of welds.
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#3
01-11-2012, 05:08 PM
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It is a 1986 W124 250TD station wagon. Not turbo, the TD is just for the model. 5 cyl. It is sucking air too bad when not parked downhill and starter motor is suffering... Will replace o'rings from top of IP and see what happens.
tks
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#5
01-11-2012, 07:11 PM
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Quote:
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Grumpy Old Diesel Owners Club group I no longer question authority, I annoy authority. More effect, less effort....  1967 230-6 auto parts car. rust bucket. 1980 300D now parts car 800k miles 1984 300D 500k miles  1987 250td 160k miles English import  2001 jeep turbo diesel 130k miles  1998 jeep tdi ~ followed me home. Needs a turbo. 1968 Ford F750 truck. 6-354 diesel conversion. Other toys ~J.D.,Cat & GM ~ mainly earth moving
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#6
01-11-2012, 08:46 PM
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Answer
Quote:
Here is your injection pump delivery valve leak issue. http://www.peachparts.com/shopforum/diesel-discussion/227463-delivery-valve-leak-issues-thread.html Here are the factory directions of how to change the bad delivery valve seals, including part numbers. http://www.peachparts.com/shopforum/general-information/173991-om60_series-ip-delivery-valve-reseal.html Here are some links that may help with other related issues. What happens when a tank vent gets clogged. What happens when a tank vent gets clogged. - PeachParts Mercedes ShopForum Why do I have vacuum in my diesel tank.....................? Why do I have vacuum in my diesel tank.....................? - PeachParts Mercedes ShopForum MB diesel filtration, how it works. MB diesel filtration, how it works. - PeachParts Mercedes ShopForum Diesel filters, no tank strainers please. Diesel filters, no tank strainers please. - PeachParts Mercedes ShopForum Algae/Fungus fixation... Algae/Fungus fixation... - PeachParts Mercedes ShopForum Biobor, what is it, why do I need it??? Biobor, what is it, why do I need it??? - PeachParts Mercedes ShopForum Filters, Fungus, Biocide, etc. Filters, Fungus, Biocide, etc. - PeachParts Mercedes ShopForum Algae Clogged Filter Pic StarTron WORKS ! Algae Clogged Filter Pic StarTron WORKS ! - PeachParts Mercedes ShopForum Check out this fuel pickup screen Check out this fuel pickup screen - PeachParts Mercedes ShopForum W123 Fuel Tank Screen Replacement W123 Fuel Tank Screen Replacement - PeachParts Mercedes ShopForum Fuel injection pump starvation with a good lift pump Fuel injection pump starvation with a good lift pump - PeachParts Mercedes ShopForum .
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ASE Master Mechanic https://whunter.carrd.co/ Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 2003 Volvo V70 https://www.boldegoist.com/
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