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#1
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What's it take to start an engine?
I've got a 1983 200D that was running fine a few days ago. I swapped out the glow plug relay and it wouldn't start again. Neither would it start when I put the bad relay back in for kicks. The starter tries and tries, but the engine won't fire up. What can I do?
P.S. this car has some issue with sensing the fuel level. It stalled out on the highway with a quarter tank left and wouldn't start again. I added one gallon of diesel and it started. Immediately filled up and confirmed that it had over 1/4 tank remaining. |
#2
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It takes fuel, oxygen, and compression.
You're missing one of those three, consider it used to run recently, and your reported fuel issues my bet is on 'fuel'. Take a clean jug of diesel and run a hose from it to you IP pump, directly. With the fuel return line going back to jug.
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Cheers! Scott McPhee 1987 300D |
#3
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Change both primary and secondary fuel filters and it will probably start. |
#4
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I have a can of diesel purge and was thinking of doing this today, actually. If that does end up working, what might be wrong? Fuel pump issue? Or maybe the pump just isn't engaging because it doesn't think there's fuel in the tank? I'll check back in this evening once I find out whether the direct supply works.
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#5
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Diesel purge is not going to magically get fuel to the injectors.................
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#6
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1.) Fuel filters (as BC mentioned) 2.) Plugged or slow in-tank screen. Can be cleaned by blowing out with compressed air, or by pulling the screen from the tank. Or can test by reversing the send and return fuel lines. 3.) Primer pump leaking air. dd
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------------------------------- '85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit) '82 300D, 'Tex', 228k body / 170k engine ... summer car '83 300TD Cali Wagon 210k, wife's car |
#7
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Thanks! |
#8
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Remove the hose to the immediate right of the pump and remove the fitting that is attached to the hose. Now you have a straight shot at the pump itself. |
#9
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Find the return line under the hood and disconnect it from the hose. Attach the air compressor line to the return line to the tank and send air at about 30 psi to the tank............be sure the fuel cap is removed first.
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#10
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__________________
All Diesel Fleet 1985 R107 300SLD TURBODIESEL 2005 E320 CDI (daily) LOTS of parts for sale! EGR block kit http://www.peachparts.com/shopforum/diesel-discussion/355250-sale-egr-delete-block-off-plate-kit.html 1985 CA emissions 617 owners- You Need This! Sanden style A/C Compressor Mounting Kit for your 616/ 617 For Sale + Install Inst. Sanden Instalation Guide (post 11): http://www.peachparts.com/shopforum/diesel-discussion/367883-sanden-retrofit-installation-guide.html |
#11
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I ended up parting my last w123 because I got sick of tracking down the air leak...
Goodluck
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08 R320 CDI current Past 95 E420 87 300D Turbo 5spd 90 300TE 83 300SD 85 300TD 92 400E 85 190D |
#12
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Answer
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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/ |
#13
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Really?? I'll have to check that - which one is which? I can compare to another car, but at the moment I only have the 200D and the rest are at my garage which is about 30 minutes away from my house.
Yes, I have the 200D now. I put the car up on a lift and figured I'd check the fuel line at the rear where the filter is. The fuel tank was full and I don't have anything with enough capacity to hold that much diesel so I figured I'd just give it a quick check by loosening it and seeing if fuel came out. Rather a lot of fuel came out unexpectedly and made rather a mess. So I'm guessing no screen issue. I then bypassed the fuel lines and used a can of diesel purge - when this was connected the engine fired up after maybe 20 seconds of cranking, and then ran fine. I hooked the fuel lines back up and started the engine - it again ran fine. I took it on a test drive for about 20 minutes, came back, stopped, started again, tried a few more times, it started right up every time. So I figured I'd give the gas-guzzling V8 a break and drive the 200D for a while. However it is bothersome that I don't know why it wasn't starting for a while. Maybe the lines truly are reversed and that would explain it? |
#14
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The return tube in the fuel tank typically only goes down 3/4 of the fuel tank depth. |
#15
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Or can they be reversed back near the gas tank underneath? |
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