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+--- Thread: engine 617 ''dieseling"? (/showthread.php?tid=1769)
engine 617 ''dieseling"? - 300GD - 09-24-2010
Hi,
Was looking for any info about but no luck.....
Im new to this diesel engine (617.931 non turbo) i have it in my 300GD after i turn key off in ignition engine stops but after ...like 5 seconds .
Is this normal for those engines ? is that why they call dieseling in gas cars becouse older diesels dont stop right away? Just wanted to make sure if this is normal .Thanks for any input
J
RE: engine 617 ''dieseling"? - ForcedInduction - 09-24-2010
You have a vacuum leak. The engine should shut down immediately.
RE: engine 617 ''dieseling"? - ConnClark - 09-24-2010
Yep its a vacuum leak. The ignition switch uses a vacuum to pull the stop lever on the injection pump.
RE: engine 617 ''dieseling"? - larsalan - 09-24-2010
not to jack your thread but...
I am in the same boat. As I noted in a previous thread I have a similar problem with my new 617.
The engine used to stop if I had the driver door locked.
Now I have noticed It will occasionally stop but, the standard is for the motor to continue to run until I press the manual shut off.
My related question is if the occasional shutoff by key is a sign that that shutoff valve may still be functional.
I mean, can it sometimes work and sometimes not? Or if it's dead it's dead.
RE: engine 617 ''dieseling"? - willbhere4u - 09-24-2010
It wont cause any damage like on a gas engine!
RE: engine 617 ''dieseling"? - 300GD - 09-24-2010
thank you guys.will look for vacuum leaks .
Is there a way to check if shutoff valve needs to be replaced or still problem is with leaks elswhere...?
RE: engine 617 ''dieseling"? - ForcedInduction - 09-25-2010
(09-24-2010, 10:17 PM)300GD Is there a way to check if shutoff valve needs to be replaced
Pump it with a handheld vacuum pump or suck on it.
RE: engine 617 ''dieseling"? - Rudolf_Diesel - 09-25-2010
I would use a handheld vacuum pump, if you use your mouth you will have a nasty taste in your mouth when your done
ask me how I know...
RE: engine 617 ''dieseling"? - 300GD - 09-25-2010
thank you again. buying hand held vacuum pump.....hoses look ok
RE: engine 617 ''dieseling"? - 300GD - 09-30-2010
Its my shut off valve .I conected vacum hose directlly form booster bypasing ignition and did not shut it off right away so its shut off valve foulty. How hard is it to replace this valve .My engine is one of latest from 617 non turbo series and i see inj pump is bit diferent for early models.
RE: engine 617 ''dieseling"? - ForcedInduction - 09-30-2010
If it has the m-pump (actuator on top), its about as easy as easy can get.
RE: engine 617 ''dieseling"? - larsalan - 09-30-2010
here is how to replace it.
http://dieselgiant.com/repairyourshutoffvalve.htm
once you get it out you could see if it will work under vacuum. That bit costs like $150. Maybe you could seal it up with new gaskets and save $ ???
RE: engine 617 ''dieseling"? - 300GD - 09-30-2010
Larsalan ,thanks but my injection pump is different then on this" how to".
Force, my vacuum hose goes to plastic housing directly on top of inj pump .Is this M pump you were saying is very easy to change valve?
Im not sure if have M pump .my vacuum hose goes vertically to plastic housing not on side like M pump has.
Another question what coolant type is recomended for 617 engines and what %(50/50?)
appreciate feedback
J