OM606 ran away, now it won't start. Any suggestions?
OM606 ran away, now it won't start. Any suggestions?
I've got an OM606.962 running the stock turbo and pump from the 603 with 6mm elements. Until now it's been running great, it used to start very quickly, less than 1/2 a second on the starter, even when below freezing sitting outside and not driven for a week.
One of the injector return lines came off, and above the valve cover filled to the top with diesel.. I was driving up and incline and it must have sloshed backwards enough to get sucked in the valve cover breather, then sucked through the intake. The air filter and box was soaked in diesel.
It pegged the rpm off the scale at 7000rpm+ for maybe 5-10 seconds even though I turned it off.
It must have run out of air filled diesel and stopped with a puff of grey smoke under the hood.
No loud bang, no horrible noises other than the very high rpm. Scary stuff.
Immediately after it happened I had a really good look - it wasn't overly hot (it's cold here now), no oil or coolant anywhere it shouldn't be.
The engine oil smells burnt.
No idea if I've killed it, really want to get it to fire so I can hear if I've done major damage.
We dragged it home, cleaned it up and have been trying to get it started for a couple of days now . It turns over fine. I'm cranking on the starter with the throttle wide open, and have done that for at least 10 minutes of cranking (in 5-10 second bursts)
We've bled the entire fuel system multiple times and have strong diesel with no air bubbles coming out at each injector.
It's sucking air really strong, lots of grey smoke out the exhaust while cranking. Rarely does it even sound like it might fire.
Spraying WD-40 or "diesel start" in the air intake makes no difference.
We even manually hot-wired the glow plugs to make sure they're lighting up.
We have not done a compression check yet, we don't have the tools. When we do, is it easier to do via the injectors?
Does anyone have any other ideas as to what we can check or do to get it to fire?
Any help greatly appreciated.
Thanks,
-Dan
Hi All,
I've got an OM606.962 running the stock turbo and pump from the 603 with 6mm elements. Until now it's been running great, it used to start very quickly, less than 1/2 a second on the starter, even when below freezing sitting outside and not driven for a week.
One of the injector return lines came off, and above the valve cover filled to the top with diesel.. I was driving up and incline and it must have sloshed backwards enough to get sucked in the valve cover breather, then sucked through the intake. The air filter and box was soaked in diesel.
It pegged the rpm off the scale at 7000rpm+ for maybe 5-10 seconds even though I turned it off.
It must have run out of air filled diesel and stopped with a puff of grey smoke under the hood.
No loud bang, no horrible noises other than the very high rpm. Scary stuff.
Immediately after it happened I had a really good look - it wasn't overly hot (it's cold here now), no oil or coolant anywhere it shouldn't be.
The engine oil smells burnt.
No idea if I've killed it, really want to get it to fire so I can hear if I've done major damage.
We dragged it home, cleaned it up and have been trying to get it started for a couple of days now . It turns over fine. I'm cranking on the starter with the throttle wide open, and have done that for at least 10 minutes of cranking (in 5-10 second bursts)
We've bled the entire fuel system multiple times and have strong diesel with no air bubbles coming out at each injector.
It's sucking air really strong, lots of grey smoke out the exhaust while cranking. Rarely does it even sound like it might fire.
Spraying WD-40 or "diesel start" in the air intake makes no difference.
We even manually hot-wired the glow plugs to make sure they're lighting up.
We have not done a compression check yet, we don't have the tools. When we do, is it easier to do via the injectors?
Does anyone have any other ideas as to what we can check or do to get it to fire?
Any help greatly appreciated.
Thanks,
-Dan
first of all a really dought a 606 can melt pistons with that type of runway situation.
my sugestion, since u already cranked the engine , do it again wont harm anymore.
1. remove the internal breathing system check it for any restriction.
2. remove the head cover, confirm nothing broken in the camshafts and if they are aligned with crank, engine at OT mark u should see the crank gear marks aligned. check that all valves go down about 5 to 8mm except those wich will touch the piston, u can do that by forcing on the tappet with a big screw driver.
3. remove the vac pump , and release the left thread nut of the timing device, check IP timing if u can , if not try to start it.
then post results...
regards
this engine should fire imediatly if glow plugs work and timing is correct even if u have a blown piston valves dadada
FD,
Powered by tractor fuel
don´t do that insane thing..... of tow start a engine that had a runaway situation,
first of all a really dought a 606 can melt pistons with that type of runway situation.
my sugestion, since u already cranked the engine , do it again wont harm anymore.
1. remove the internal breathing system check it for any restriction.
2. remove the head cover, confirm nothing broken in the camshafts and if they are aligned with crank, engine at OT mark u should see the crank gear marks aligned. check that all valves go down about 5 to 8mm except those wich will touch the piston, u can do that by forcing on the tappet with a big screw driver.
3. remove the vac pump , and release the left thread nut of the timing device, check IP timing if u can , if not try to start it.
then post results...
regards
this engine should fire imediatly if glow plugs work and timing is correct even if u have a blown piston valves dadada
FD,
Powered by tractor fuel
Using more starter fluid we were able to get it to turn over fast enough to hear very bad loud noises.
We don't know if it's pistons hitting valves, or a rod knocking, but either way it's very bad.
Have to figure out the plan from here.
-Dan
Thanks for the replies all, I appreciate the help.
Using more starter fluid we were able to get it to turn over fast enough to hear very bad loud noises.
We don't know if it's pistons hitting valves, or a rod knocking, but either way it's very bad.
Have to figure out the plan from here.
-Dan
87 300SDL OM606 swapped HE351VE 722.633 swapped, Crower cams, KM valvesprings
76 300TD custom lots of stuff
06 Mercedes CL65 AMG 619 WHP, http://TurboTims.com
You I would say at least check compression. It is possible you floated some valves and bent some stuff.
87 300SDL OM606 swapped HE351VE 722.633 swapped, Crower cams, KM valvesprings
76 300TD custom lots of stuff
06 Mercedes CL65 AMG 619 WHP, http://TurboTims.com
(01-10-2016, 04:02 AM)hooblah Dan its nice to see you have time to post here, but you can't answer my messages regarding payment for the part I obtained for you.
Ahh, man, I'm sorry, I totally forgot to check my PMs.
I just replied to you, let me know the amount I owe you.
-Dan
Good chance to port the head and put some oversized valves in. If you junk it for a motor swap please let me know as I would like to buy the head core from you. Thanks.
atypicalguy
01-11-2016, 09:27 AM #11Sorry to hear about the runaway. What a random thing to have happen! Such a little part to fail and now this.
Good chance to port the head and put some oversized valves in. If you junk it for a motor swap please let me know as I would like to buy the head core from you. Thanks.
(01-11-2016, 09:27 AM)atypicalguy Sorry to hear about the runaway. What a random thing to have happen! Such a little part to fail and now this.
Good chance to port the head and put some oversized valves in. If you junk it for a motor swap please let me know as I would like to buy the head core from you. Thanks.
Yeah, it's amazing that something so small can cause such a big failure!
The engine is swapped into a 2007 Jeep JK Wrangler Rubicon Unlimited. I'm going to sell the entire setup as-is, encluding engine, 603 pump, 648 pan and oil pump , etc.
shoot me a PM if you have any interest in the whole thing - I'm not too keen to part it out, I need to move on from it.
-Dan
(01-11-2016, 09:27 AM)atypicalguy Sorry to hear about the runaway. What a random thing to have happen! Such a little part to fail and now this.
Good chance to port the head and put some oversized valves in. If you junk it for a motor swap please let me know as I would like to buy the head core from you. Thanks.
Yeah, it's amazing that something so small can cause such a big failure!
The engine is swapped into a 2007 Jeep JK Wrangler Rubicon Unlimited. I'm going to sell the entire setup as-is, encluding engine, 603 pump, 648 pan and oil pump , etc.
shoot me a PM if you have any interest in the whole thing - I'm not too keen to part it out, I need to move on from it.
-Dan
sorry for diggin out that threat, but i have a question (or need your opinion) on that runaway situation.
I also had it, since my turbo was leaking oil into the intake...car ran like 20 seconds into high revs and then shuts down.
I started it an one cylinder was missfiring, i guess the valve didn´t move. Then it stood like a month in the garage and i started it again. Now it runs fine on all 5 cylinders.
I cleaned all the intake and now its making boost again and runs fine, only start a little bit rough, but nothing really bad. I´m only scared that something will brake soon :/ Any suggestions?
Would you guys drive it until it brakes or change the head "precaution"?!
hi guys,
sorry for diggin out that threat, but i have a question (or need your opinion) on that runaway situation.
I also had it, since my turbo was leaking oil into the intake...car ran like 20 seconds into high revs and then shuts down.
I started it an one cylinder was missfiring, i guess the valve didn´t move. Then it stood like a month in the garage and i started it again. Now it runs fine on all 5 cylinders.
I cleaned all the intake and now its making boost again and runs fine, only start a little bit rough, but nothing really bad. I´m only scared that something will brake soon :/ Any suggestions?
Would you guys drive it until it brakes or change the head "precaution"?!
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