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#1
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glow plugs
i know if i spent enuf time on this forum i would find answers to my questions but im going to ask, just to save time. i would think that my 83, 5 cyl turbo diesel needs glow plugs (hard to start when its below freezing) question is, do i use loop type or pencil type and what is the difference and what ohm reading should i have on the ones i have in there and how do i know whiat is in there without taking one out ? possibly i have only 1 or two bad ones and i can just replace those. $$$$$ is kinda tight, just had my durango transmission rebuilt and that used up prety much ALL my mtce. money & then some, for the MB. could someone guide me to links that will give me somse easy answers, please ? thnaks much in advance
davidh |
#2
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An 83 will have pencil type plugs. The easy way to tell is by looking at the connectors. Pencil type plugs have a flexible wire to each plug. Loop plugs have a rigid metal strip going from plug to plug.
Sixto 93 300SD |
#3
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You have the PENCIL type. 1 or 2 not working will definately give you starting problems in cold weather. Go to the glow plug relay located on the drivers side inner fender well and find the relay. Pull the black cover off and check the strip fuse. Make sure that the screws are tight. Find the small 5 prong socket plug and pull it from the relay. You can then take a test light or OHM meter and test each glow plug. I believe the wires are color coded so you can find which one might be faulty.
In cold weather it is good to cycle the glow plugs twice before starting if you are experiencing problems starting. LIGHT throttle helps but very LIGHT.
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My Truck.. 2007 DODGE, 5.9 Cummins, 6spd stick, 4X4. My car..1977 240D, OTHER WHEELS...1955 VW Oval window bug, European Delivery (Holland) with a 1700cc, 2 barrel, Porsche drum brakes. 1939 WILLYS Pick-up. 1967 Triumph 200cc Tiger Cub. 1976 Honda 550F 4cyl Motor Cycle. |
#4
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I think the spec is 1.7 ohms for each plug.
Sixto 93 300SD |
#5
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It should be closer to 0.6 ohms, cold. It will usually read "infinity" if it's bad.
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#6
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Try hooking a wire from bat positive to the glow plug wire. It should spark when removed. This indicates current flow. If there is no current flow the glow plug is not heating up.
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#7
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Glow plug testing.
Glow Plug Testing? Symptom of 1 or 2 bad glowplugs... Symptom of 1 or 2 bad glowplugs... Don't always trust your glow plug indicator light! Don't always trust your glow plug indicator light! Glow Plug Relay Glow Plug Relay Glow plugs link thread http://www.peachparts.com/shopforum/diesel-discussion/137732-glow-plugs-link-thread.html#post1019018 Replacing Glow Plugs http://mbdieseldiy.tripod.com/glowplugs.htm Cold weather starting links http://www.peachparts.com/shopforum/diesel-discussion/137674-cold-weather-starting-links.html#post1018529 Starter health important to your diesel? http://www.peachparts.com/shopforum/diesel-discussion/107318-starter-health-important-your-diesel.html#post739798
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ASE Master Mechanic asemastermechanic@juno.com 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 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/ |
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