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#1
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SOS: Help after fuel delivery work
ARRGH! Over the past 2 weeks I have been busy on my 86 300SDL. I replaced the delivery valve O-rings and crush washers, the little oil O-ring on the side of the IP for the manual STOP lever and the cruise control unit (thanks JamesDean).
In order to get to everything I also removed the intake manifold (replaced the gasket). I also pulled all of the glow plugs and tested them. Also reamed the holes. I finally got everything back together Sunday, and after a lot of cranking (with rests in between) got the engine running. Let it idle for about 15 minutes, revved it up a few times, shut it off and then started it again. All of my "car time" Monday was consumed with getting the under dash pieces back in. Today I started with the driver seat. Everything back together, so I wanted to do a test drive. Engine would not start. Just cracked and cranked. Ran battery down enough that I needed a jumper again, so I moved other car close, added jumper cables and resumed trying to start the MB. After a while all I get is a loud click. No crank. Left the jumper cables on for a while with some revving of the other car. Still nothing but click. So, a few questions:
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Mike Frederick 1986 300SDL, 240K+ miles 1985 300D KaliKar, 270K+ miles |
#2
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It could just be a too hot starter and discharged battery.
I would let the starter cool off as in a few hours and put the battery on an actual charger, trickle automatic overnight deal would be best. I always prime with the hand operated primer pump, I would also crank with a couple of injector lines loose at the head and tighten them once you see fuel, then move on to two others, it should start once you have fuel at a few injectors. dont run it constantly and let it rest in between tries (I have also used a helper fuel at the intake, like wd40 or starting fluid but these are last last resorts) It could have lost prime or just run off what was in the fuel filter, try refilling it with fuel and priming. you could also try jumping the starter solenoid, it is easy. or tapping on the starter while trying to start it, also easy. google will help with both. Good luck, I am sure you will figure it out
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1983 240d 5Sp SOLD 1986 300D(LUCO) SOLD 1983 300TD(dreamboat)SOLD 1984 240d (Executive)SOLD 1984 240d (Euripides) SOLD 1982 300sd SOLD 1982 300sd (Ambas)SOLD |
#3
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That was the point of my last "question"; the 603 doesn't have a hand operated primer pump
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It is now acting like no fuel delivery; I guess I will have to try that again...if my starter and/or battery are not killed.
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Mike Frederick 1986 300SDL, 240K+ miles 1985 300D KaliKar, 270K+ miles |
#4
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Update
Tried after 90 minutes of waiting and still just a loud click.
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Mike Frederick 1986 300SDL, 240K+ miles 1985 300D KaliKar, 270K+ miles |
#5
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Try giving the stater a quick rap with a 2X4 or other good sized piece of wood. What may have happened is the starter gear may be jammed into the flywheel ring, and a good shock can sometimes free it up. Good luck!!
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96 E300d |
#6
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Update: not quite so sad
So after a few more days I decided to just try to crank the SDL again. Voila! It cranks!
But still no start. So I loosened all fuel lines at the injectors. Cranked for a bit and then went to look. All are wet. Tightened fuel lines back down. So now I'm in better shape, but still not good. Here's the things I did in order:
So I'm trying to figure-out what changed from Sunday to Tuesday to prevent the engine from starting. I installed and attached the cruise control amplifier and that other black box relay that shares the same bracket. Just for fun today I also disconnected the cruise control actuator (under the hood) and tried cranking. No Joy. Any ideas? Is there any way to stop the engine from starting by connecting things up under the dash? I was able to observe the STOP lever and it is moving correctly. PS: At this time of year in Houston, the need for glow plugs is completely optional.
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Mike Frederick 1986 300SDL, 240K+ miles 1985 300D KaliKar, 270K+ miles Last edited by mikeyfev1; 08-21-2015 at 09:18 PM. Reason: More info |
#7
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Still sounds like you have lost the prime. Something leaking, not tight enough.
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#8
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Charge up the battery?
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#9
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Update
OK, so yesterday I cracked all of the fuel lines at the injectors (again). Cranked for about 15 seconds and had 6 wet injectors. Reattached the fuel lines and really cranked them down. Cranked down on the other ends also. Connected jumper cables to help with battery run-down. Cranked and cranked with no hint of starting.
So I've confirmed 3 times that I have fuel being pumped to the top of the injectors. Still no starting. Anyone have any ideas?
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Mike Frederick 1986 300SDL, 240K+ miles 1985 300D KaliKar, 270K+ miles |
#10
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Check the glow plugs. Also it sounds like your starter may be near the end of its life...
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2004 F150 4.6L -My Daily 2007 Volvo XC70 -Wife's Daily 1998 Ford F150 -Rear ended 1989 J-spec 420SEL -passed onto its new keeper 1982 BMW 733i -fixed and traded for the 420SEL 2003 Volvo V70 5 Speed -scrapped 1997 E290 Turbo Diesel Wagon -traded for above 1992 BMW 525i -traded in 1990 Silver 300TE -hated the M103 1985 Grey 380SE Diesel Conversion, 2.47 rear end, ABS -Sold, really should have kept this one 1979 Silver 300D "The Silver Slug" -Sold |
#11
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Quote:
Quote:
Also, the starter did lock-up once, but has had no trouble since. It is spinning the engine as quickly as ever. I just don't understand why the engine ran well on Sunday and the following Tuesday it won't run at all.
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Mike Frederick 1986 300SDL, 240K+ miles 1985 300D KaliKar, 270K+ miles |
#12
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Look, I live in Tucson and still use the glow plugs. IDI engines need the glowplugs, end of story. There's too much surface area in the combustion space that soaks up heat from compression. If it were direct injection, no glow plugs would be needed. Test your glow system next and report back.
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#13
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Quote:
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Mike Frederick 1986 300SDL, 240K+ miles 1985 300D KaliKar, 270K+ miles |
#14
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Apology and continuing saga
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When I took mannys9130's advice and looked at the glow plug circuit, I noticed that the glow plug fuse was fried! I replaced the fuse, tried to start and fried the new one instantly. So now I have pulled the intake manifold back off and I am looking for shorts. In the meantime, I have a question about the glow plug fuse. When removing the old dead fuse I accidentally touched the screwdriver across the forward glow plug fuse screw and a nearby ground strap. BIG spark. Is this supposed to happen (picture to show the exact points)?
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Mike Frederick 1986 300SDL, 240K+ miles 1985 300D KaliKar, 270K+ miles |
#15
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Make sure the leads that attach to the glow plugs are oriented downwards. If pointed upwards even a small amount the will be in contact with the underside of the manifold and short.
Try a boat primer put in series with the supply line to the prefilter and use that as your primer sure saves cranking.
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92 e300d2.5t 01 e320 05 cdi 85 chev c10 |
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