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Old 02-11-2002, 02:23 PM
Senior Member
Join Date: Nov 2000
Location: SW Chicago Suburbs, IL
Posts: 306
Changing Injectors on 87 300SDL OM603

255k on the original set of injectors on my 87 300SDL. I have one (#2) that is making quite a racket and the car is starting to have visible smoke. I ran a can of Diesel Purge through it and it quieted down a bit (and didn't smoke hardly at all through the entire process), but that pesky #2 injector does have a pronounced nailing, especially when cold.

I have a new set of injectors, heat shield/seals, and braided fuel line on the way.

The replacement looks pretty straight forward and the MB CD's do not show there to be anything special needing done. Just curious if there I need to look out for. And would any special tools be helpful?


Lance Allison

11 MB S550 4Matic, 55k miles, Designo Black/Black
14 Ford F150 XLT Lariat Crew, 73k miles, 5.0
Coyote V8 4x4. Black/tan.
09 GMC Envoy Denali, 5.3 V8, 4x4 SWB. 38k miles,
Jewel Red/Med Gray.

87 MB 300SDL, 320k miles, Astral Silver/Blue.
98 VW Jetta TDI, 488k miles, Classic Green/Gray.
85 Olds 98 Brougham FWD, 4.3 DIESEL V6, 80k
miles, 3x Gray.

MBCA Member, Chicago Region
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Old 02-11-2002, 02:30 PM
Registered User
Join Date: Jul 2001
Location: Western Michigan
Posts: 1,080
Hi, Lance.

I think there is a special removal tool (injector socket). About $20.
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