can this be attributed to a clogging primary fuel filter? Havn't changed it since i first got it for about 22K miles. seems to run fine and no power loss that i can tell. BTW its my euro 240D. Still trying to get the 300D up and running agian

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1983 Euro 240D 277K
2016 Mazda 6
Coming Soon, 2013 Mercedes E350 Bluetec
Formers:
2012- Mazda 3
2007 Outlander- complete pile
1995 E300 Diesel 208K
2007 VW Passat 2.0T 63K SOLD
2003 Jaguar X-type 3.0 Sport Sold 04/11 w/88K
2009 Lexus RX350 9061 miles. Sold 04/09
2008 Mitsubishi Lancer GTS:Totaled Sept.,09 @ 24,000
2003 Infiniti I35 58K Sold
1984 300 turbo diesel 222K

usually air in the IP. crack the lines one at a time to see if you can isolate the problem.
John

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

When a filter starts to plug up you will notice a "miss" at high RPMs, demand for fuel at high load times is getting restricted. At idle, not much fuel required.

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

Is your fuel tank nearly empty? If so try running on a full tank and see if there is an improvement, if yes then there's a possibility that air is getting pulled into the fuel line between the take up pump on the IP and the tank.
DDH

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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!

Uneven, as in shaking, or "steady" fluctuation? All the time at idle, or occasionally? Fluctuation, only noticable at idle, in the SD was cured by replacing rack damper bolt, an adjustment may have been all that was needed. I do get a "miss" at idle sometimes when engine hot. SD and CD both. Can't hurt to change filters. Hope this helps.

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83 SD

84 CD

No rack damper bolt in a 240D

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

Sorry.

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83 SD

84 CD