OM606.962 Lumpy Idle
OM606.962 Lumpy Idle
When thoroughly warmed up it idles perfectly, and even when cold holding the revs just above idle it runs perfectly..
It has been suggested this could actually be a worn / faulty DV causing the issue, so I'm thinking crack each injector in turn and identify the faulty cylinder/injection line, but it won't identify potentially a worn injector (is this possible?).
Assuming it's a worn DV can I just buy a single DV from say Dieselmekken?
Interestingly it does run smoother and (feels) more powerful now the seals are replaced..
Anyone with a similar experience?
Beers, H.
![[Image: dv1.jpg]](http://s1250.photobucket.com/user/Mercedes_Power/media/dv1.jpg.html)
![[Image: dv2.jpg]](http://s1250.photobucket.com/user/Mercedes_Power/media/dv2.jpg.html)
Installed:
OM606/722.6, big IC, W220 brakes.
Planned:
DIY manifold, compound, 722.6 controller, built IP.
[i]Less rust.. [/i]
My 606 always runs on 5 when cold, the DV's were weeping quite badly so I replaced the 6.no O-rings and copper washers and the fuel leakage has stopped but the lumpy idle remains..
When thoroughly warmed up it idles perfectly, and even when cold holding the revs just above idle it runs perfectly..
It has been suggested this could actually be a worn / faulty DV causing the issue, so I'm thinking crack each injector in turn and identify the faulty cylinder/injection line, but it won't identify potentially a worn injector (is this possible?).
Assuming it's a worn DV can I just buy a single DV from say Dieselmekken?
Interestingly it does run smoother and (feels) more powerful now the seals are replaced..
Anyone with a similar experience?
Beers, H.
Installed:
OM606/722.6, big IC, W220 brakes.
Planned:
DIY manifold, compound, 722.6 controller, built IP.
[i]Less rust.. [/i]
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
Why dont you think its a glow plug? If you are convinced its a DV swap it with another cylinder and see if the misfire moves.
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
(08-08-2016, 08:09 AM)TurboTim Why dont you think its a glow plug? If you are convinced its a DV swap it with another cylinder and see if the misfire moves.
Because after even 5-10 minutes of driving (fully warmed up) it still idles on 5, after 10-15 minutes of driving it will then idle normally.
Far too long for the chambers to not be heated?
Installed:
OM606/722.6, big IC, W220 brakes.
Planned:
DIY manifold, compound, 722.6 controller, built IP.
[i]Less rust.. [/i]
(08-08-2016, 08:09 AM)TurboTim Why dont you think its a glow plug? If you are convinced its a DV swap it with another cylinder and see if the misfire moves.
Because after even 5-10 minutes of driving (fully warmed up) it still idles on 5, after 10-15 minutes of driving it will then idle normally.
Far too long for the chambers to not be heated?
Installed:
OM606/722.6, big IC, W220 brakes.
Planned:
DIY manifold, compound, 722.6 controller, built IP.
[i]Less rust.. [/i]
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Ex: 525tds 130kW, C250TD 160kW, E320CDI 200kW, ML400CDI 230kW, A6 R5TDI 130kW
Now: Q7 V8TDI 240kW, 320d 150kW, 335d 210kW
Delivery valves and springs are still available from Mercedes dealer, so would not bother with dieselmeken. ca. 45€/piece.
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Ex: 525tds 130kW, C250TD 160kW, E320CDI 200kW, ML400CDI 230kW, A6 R5TDI 130kW
Now: Q7 V8TDI 240kW, 320d 150kW, 335d 210kW
(08-10-2016, 12:20 PM)starynovy Delivery valves and springs are still available from Mercedes dealer, so would not bother with dieselmeken. ca. 45€/piece.
Great thanks!
Installed:
OM606/722.6, big IC, W220 brakes.
Planned:
DIY manifold, compound, 722.6 controller, built IP.
[i]Less rust.. [/i]
It smooths out after a few minutes of running
78 300D, 87 190D, 94 E320, 95 E300D
Bigpanda16
08-15-2016, 11:38 AM #8It could be simply working the air out of that cylinder's dv system. My 602 does the same thing, it coughs and misses and smokes until it works the air out of the system. Even on a hot crank after it has been run, it will do it again until all the air is bled out the return system.
It smooths out after a few minutes of running
78 300D, 87 190D, 94 E320, 95 E300D
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