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Old 05-10-2009, 11:22 AM
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pizzachef pizzachef is offline
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Join Date: Jan 2007
Location: New Cumberland, PA
Posts: 833
My injectors didn't have heat shields

This is for my '74 240D. I got some rebuilt injectors from bgkast and installed them yesterday. A new set of heat shields came with the injectors. Well, I got the old injectors out, and this is what the bottom of the hole looked like:



It doesn't look anything like a heat shield down there, so I dropped a new heat shield in the hole and it looked like this:



I put the new injectors in and torqued them to 50 lb-ft and I've got no leaks so far, it has only been a day though.



Here's what the ends of the old and new injectors look like.



I was hoping to cure the huge plume of smoke that I'd get on a cold startup, and the loud rattling/nailing sound when the engine was idling. Well, I think it lessened the smoke, although I need to start it on a chilly morning to be sure, and I don't know when we'll have another one of those any time soon. But the loud rattling is still there. I may be a little better, but sometimes it still sounds like I have rocks in the engine. Maybe that's just the way the w115's sounded? I'll try a diesel purge some time and start using straight biodiesel now that its warm.
Attached Thumbnails
My injectors didn't have heat shields-injector-ends.jpg   My injectors didn't have heat shields-injectors.jpg   My injectors didn't have heat shields-hole-1.jpg   My injectors didn't have heat shields-hole-2.jpg  
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1985 300TD-euro 352,000 mi
1974 240D (1?)52,000 mi - has a new home now
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