|
|
|
|
|
#2
09-10-2009, 02:12 PM
|
|||
|
|||
|
Are we talking about a 617 engine (1985 or earlier)? If so, I believe the correct idle speed range is 650-750. Mine is set at about 550, but that's about as low as you can get a smooth idle.
|
|
#3
09-10-2009, 02:35 PM
|
|||
|
|||
|
It depends on the 617. Some have a manual idle speed control knob on the dash so that it can be easily varied.
__________________
1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
|
|
#4
09-10-2009, 02:39 PM
|
|||
|
|||
|
Quote:
|
|
#6
09-13-2009, 08:20 PM
|
||||
|
||||
|
750 is right.
__________________
Andrew '04 Jetta TDI Wagon  '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
|
|
#7
09-13-2009, 11:24 PM
|
||||
|
||||
|
I have mine set around 700 or so in my SD....for a long time I had it around 600....but it had a shaking issue, fine tuning of the idle and rack damper bolt completely eliminated the shaking.
My dad's '82 SD idles around 550......and his '83 is set to around 900....it loves to vibrate for some reason at a lower idle (everything is to spec/adjusted).....so 900 is the lowest point where its quite smooth. My brother's 300D idles around 650ish....and it runs like a clock.
__________________
-diesel is not just a fuel, its a way of life-  '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
|
|
#8
09-14-2009, 08:13 AM
|
||||
|
||||
|
750 is about ballpark for where you want to be.
Some cars like slower, some faster. The answer a lot of people like for economy is: as low as it will go and run smoothly. If you have to do a lot of cold starting (northern climate), you might want to adjust it a little higher in the winter for smoother cold idle. Mine is at 700 but I'm thinking of taking it up a notch for the protection of the motor mounts. If you're having rough idle, though, in the normal range, there are lots of things to check before adusting idle speed.
__________________
I-------------------------------------1981 300TD, Thistle Green, 140K------------------------------------I
|
|
#9
09-14-2009, 10:38 AM
|
||||
|
||||
|
The idle speed doesn't really affect economy on a diesel....my dad's with 900rpm idle gets better MPG's on average than his 600rpm idle SD.....
And my mpg's were unchanged when I raised mine 100rpm....
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
|
|
#10
09-17-2009, 04:07 PM
|
|||
|
|||
|
Quote:
|
|
#11
09-17-2009, 04:46 PM
|
||||
|
||||
|
Injector spray pattern, fuel filters, air filter, injection timing, valve adjustment, then maybe rack dampener bolt.
If none of these work for a smoother idle after idle is set in acceptable range of 650-800 or so, then do a compression check. Might have stuck rings or a bad cylinder for some reason.
__________________
I-------------------------------------1981 300TD, Thistle Green, 140K------------------------------------I
|
 |
| Bookmarks |
|
|
Linear Mode
