Stranded for the first time! Please help diagnose my '82 240! - Page 2 - PeachParts Mercedes-Benz Forum

driad_98 · #16 02-13-2006, 01:40 PM

Alright, you all. I've got my car home! Towed it home (at length) last night. I'm gonna check out the threads on cleaning my strainer and get to work on it today. Thanks for the suggestions and I'll get back as soon as I have news! Cheers!

t walgamuth · #17 02-13-2006, 01:50 PM

fungicide first. if it is clogged with fungi the right kind of killer will also digest it so that you can just drive it out. then treat a couple more tanks and go.

removing the strainer sounds easy til you find yourself wondering what to do with 15 or 20 gallons of diesel fuel.

tom w

83-240D · #18 02-13-2006, 03:12 PM

filter filter filter filter filter your used veg oil. 5 mics minimum. 1 if you can get it.

tool shop will have a 13/16 allen wrench for the tank strainer. needless to say but i will, drain the tank first.

driad_98 · #19 02-14-2006, 07:02 PM

Well, here's the update...

I removed and cleaned the strainer, but it wasn't very dirty. I've had the car on the charger all night. Fuel comes freely from the outlet on the secondary filter, when I check there. It also comes freely out of the IP overflow hose, when I check there.

When I take the injector line loose at the injector, and pump the primer, nothing. I think that's normal. Can someone tell me this: when an injector line is loose at the injector, and I crank the starter, should fuel squirt out?

I also tried using WD-40 in the intake, to no avail. It didn't kick over at all. That seems odd to me, you?

The glow light glows normally and I've checked the glow system lately.

Is it possible that, on a long shot, a valve came way out of adjustment? I'm stumped. Any suggestions?

t walgamuth · #20 02-14-2006, 08:00 PM

if it wont start on the wd40 (with the air filter off and spraying directly into the intake while someone esle is cranking it over) then there is prob something wrong with the glow system.

tom w

driad_98 · #21 02-14-2006, 09:26 PM

I just did some work on the glow system and it's been flawless. Also, it stopped starting right after it'd been running... I was just reading another thread about this... I'm a little worried for the motor. How hard's a 300D engine conversion, anyone know? Also, does anyone have a diesel compression tester I could barrow or rent? I'm in Berkeley. Thanks!~

driad_98 · #22 02-14-2006, 10:19 PM

Also, when I try to start the 240, it goes "ruh-ruh-ruh-UH ruh-ruh-ruh-UH" and on the 'UH', the dash lights flick out for a split second. Maybe I need to check the valves... I did them a while back, not long, but maybe something came loose? Casting about for non-engine-swap options. How tough is swapping those motors? Thanks..

t walgamuth · #23 02-14-2006, 10:58 PM

glow plugs were working fine last time i started the car doesnt mean they are working fine now.

if it has compression, and fuel, and the glows work it should start. it was running fine so the compression is not going to go away all at once. if the glows are working it will run on the wd 40. so even if there is a fuel problem it will run. but if the glows are not working it wont start.

i urge you to verify that they are working.

i sold a very nice 220d for about half its value cause i "KNEW" the glow plugs were working because i had changed them not very long before.

but in retrospect i am certain they were not working.

i hope you wont make the same mistake.

tom w

#24 02-14-2006, 11:30 PM

Loose Injector Lines + Pumping primer doesn't necessisarily mean you will get fuel out of the lines.

If you want to check that the lines/ip are clear, loosen the lines (or remove them) and crank the car over.

If you end up with fuel everywhere...your IP is doing good

My guess is that you are not getting adequet fuel/pressure something to the IP and thus it cannot do its job...

SD Blue · #25 02-15-2006, 12:23 AM

[QUOTE=driad_98]Also, when I try to start the 240, it goes "ruh-ruh-ruh-UH ruh-ruh-ruh-UH" and on the 'UH', the dash lights flick out for a split second. QUOTE]
This sounds like an electrical issue. With an intermittent problem like this, check your batt-chassis and especially the chassis-engine grounding straps. It may also be a loose connection at the starter.

Are you saying that the starter sounds as if it is dragging?

t walgamuth · #26 02-15-2006, 06:48 AM

like a car that is firing one glow plug out of four.

if so, it wont start that way.

prob would with a pull though. if glow plugs are the only prob.

tom w

driad_98 · #27 02-15-2006, 12:09 PM

The glow light on the dash is working mostly normally. I think there's an occasional loose connection at the relay. That's been an on-going fix, fix-again kinda thing. I'll check out the whole glow system and make sure the grounds are good...

I do remember, when driving to the final running place, that it felt as though the filters were clogged again. I'd just changed the pre-filter and secondary on the road minutes before. That's why the tank strainer seemed like such a good possibility. Now that I've checked the strainer, it also makes me fear worse problems.

Brandon314159 - I've read that the IP doesn't spray much fuel at all when you do that. Do you have a different experience?

driad_98 · #28 02-16-2006, 06:34 PM

New update! I checked the glowplugs by multimeter, and they showed good. Then I pulled them out, just to jump them with 12v to confirm good red-hot glow, well when we got to the third from the firewall it came out all covered in oil. Black, looking just like engine oil. My head said "uh oh". Opinions? Does that suggest to anyone else a serious engine problem? Can anyone lend insight? Thanks.

#29 02-16-2006, 06:36 PM

Quote:

Originally Posted by driad_98

Does that suggest to anyone else a serious engine problem? Can anyone lend insight? Thanks.

Wet oil? Not like burnt oil or anything?

If its wet (like glossy) you are in a world of trouble....assuming you didn't feed your car motor oil in the fuel tank

driad_98 · #30 02-16-2006, 08:31 PM

Looks really wet, jet black. I'm going tomorrow morning to pick up a euro 300D engine, NA, with 118K miles on it. That should be a fairly simple swap, yes? It'll be an excellent upgrade, I'm sure. Anyone know what the motor mount comparison is?