PeachParts Mercedes-Benz Forum - $400 Find, Seized while using the starter? (see pg 3)

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- - $400 Find, Seized while using the starter? (see pg 3) (http://www.peachparts.com/shopforum/diesel-discussion/159279-%24400-find-seized-while-using-starter-see-pg-3-a.html)

Well I got the linkage figured out. The stop button was apparently broken in the past and welded in the wrong spot causing it to hang up. I removed the springs and it operates normally now. I also checked the idle screw and it does not look broken.

I put 5 gal of diesel in the tank, but I still can't get the prefilter to fill. When I prime the level in the filter actually drops. The car will cough and shake like it is about to catch, but never start. I guess I will try to crack the injector lines and try to get the clutch going for a tow start. Is there any chance that the IP timing could have suddenly changed its self?

Quote:

Originally Posted by bgkast

IM juust a lil confused, you say you are going to tow start it. if your going to do what i think your going to do, how would that make any differance with it not starting? its still not getting fuel or anything, so why would it start from a tow start, if it wont even start with the starter, just dosent make any sense to me

My 300 SD took 30 or so revolutions to get fuel to leak from cracked nuts in the IP tubes to the nozzles. The OEM primer pump failed and I believe allowed air into the system as the engine died. I loosened the nuts roughly 1/3rd turn. Now I have a 'modern' prime pump ($16.00 & a 5 minute fix). So charge the battery, loosed the nuts and crank till you make a mess.

This may sound a bit ridiculous, but have you removed the oil filler cap and watched the camshaft while someone cranks the engine.

I don't see anywhere in the post where you know for sure that the timing chain hasn't broken. The previous owner indicated it just lost power and died. This could have been caussed by a broken timing chain.

Anyway, pardon me if you've already eliminated a broken timing chain as the culprit.

Cheers,
Wes

Quote:

Originally Posted by Wes Bender

He already said "The car will cough and shake like it is about to catch, but never start.". It is possible that the chain jumped a link. That would put timing 18* off. Enough to severely hurt operation, but not always cause a catastrophic failure.

Quote:

Originally Posted by bgkast

I put 5 gal of diesel in the tank, but I still can't get the prefilter to fill. When I prime the level in the filter actually drops.

Don't have to look any farther than this I dont think. And I seem to be in agreement with Whunter also. So do what he said.

I tried using a bottle aux. fuel tank yesterday. The primer pump could still only get the filter half full of fuel for some reason. The battery died before I could check for fuel using the cracked injector lines. I will report back about that later. I'll take a look at the cam and check the timing using the mark on the tower. I am thinking the tow start will help get the fuel moving along with out killing the battery. I have to change the hydraulic line for the clutch before I can try to tow start it though. Off to check the cam...

just outa curiosity (sp) how are u gonna to start it?

Remove the lift pump output line from the secondary filter housing.
Insert the hose in an empty can.
Bleed the primer pump, keeping the hose end submerged.

Well the chain is there so that's good :D Sweet sassy molassy this thing is hard to turn over though. Is that a sign of good compression? :confused: :)

sorry my old post made no sense, i ment how are you gonna tow start it? with another car? or pushing it down the road?>??? agian just curious

Quote:

Originally Posted by bgkast

Well the chain is there so that's good :D Sweet sassy molassy this thing is hard to turn over though. Is that a sign of good compression? :confused: :)

Is it hard all the time or does it come and go?

I could not get it to turn so I pulled the metal injector lines (which had fuel in them) and pulled the glow plugs. Even now I still can't get it to turn. Maybe the chain skipped another tooth and the valves are hitting the pistons now, although none of the cam lobes look like they are in the "open" position. What should I try now? :(

Starter speed is critical.