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603 Engine noise 350SD Head on 300D block rod bender rebuild
Finished a rod bender 603 rebuild with an '87 300D block & 140 350SD head.
Engine runs fine & drives great but is very noisy. It sounds like injectors nailing, but these are known good injectors I know the early & late injectors are set to open and different pressures, could that be it? Timing issues? Any tips?
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David Hendy '97 Renntech E60RS '97 GMC 2500 Sub' Diesel '95 E300D '88 300TE '88 250TD '84 L/Rover 109 |
#2
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The injectors which are not shimmed to pop at the same pressure across all cylinders indeed I wager is causing the excess noise, think about it-Some injectors are firing at different times than others, in essence some are advanced and some are retarded timing wise. Shim all the injectors to pop at the right pressure equally across all cylinders. Look for Diesel911 and CSeanWatts to comment here. They're the injection/ injection timing experts
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Regards, Ian White 1995 E300 Diesel w124 OM606 2014 E550 w212 M278 biturbo 2001 BMW 740i E38 M62 (past) 1981 300SD w126 OM617 (past) |
#3
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There is a possibility of ticking hydraulic valve lifters. A common fix is to try synthetic oil, or simply replace the noisy lifters.
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1982 240D, sold 9/17/2008 1987 300D TurboW124.133 - 603.960, 722.317 - Smoke Silver Metallic / Medium Red (702/177), acquired 8/15/2009 262,715 and counting |
#4
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After head R&R, I endured an arduous process of isolating air infiltration represented by noisy injectors, nailing and rough starts. Finally found out it was a cracked secondary filter housing. Do a search of my posts or check the DIY section of the forum for this very lengthy thread. Air ingress can be a formidable malady to prosecute.
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327K on 1986 W201, 602.911, 722.414 2.5 190D ("The Red Baron") 139K on 1993 W124, 104.942, 722.433 2.8 300E ("Queen") http://farm5.static.flickr.com/4081/...0bb92d3c_m.jpg http://i370.photobucket.com/albums/o...g?t=1325284354 Do not worry about your difficulties in Mathematics. I can assure you mine are still greater. - Albert Einstein take a walk down memory lane... |
#5
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In order to rule out the injectors
(Since you say you know they are good.) Do the loosen then tighten the hard line-to-injector nut ONE AT A TIME while the engine is running. If you notice no difference, besides missing a cylinder, you confirm which one might be good or bad. BUT this isn't a substitute for a pop test.
I am also leaning toward lifters...Check this thread and go down to post #11 then open that PDF file, it's the FSM lifter test for OM60X (those of us with hydraulics.) CLICK HERE
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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine) Raleigh NC - Home of deep fried sushi! |
#6
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Quote:
Did you end up having to get a new head?
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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine) Raleigh NC - Home of deep fried sushi! |
#7
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No, although from the pictures, the head looks brand new. The filter housing connects to the head with 2 long bolts. I just swapped it out with a filter holder from a 603 at the junkyard. Ended up replacing and rebuilding every fuel supply part all the way to the injector pump inlet only to find a six dollar solution.
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327K on 1986 W201, 602.911, 722.414 2.5 190D ("The Red Baron") 139K on 1993 W124, 104.942, 722.433 2.8 300E ("Queen") http://farm5.static.flickr.com/4081/...0bb92d3c_m.jpg http://i370.photobucket.com/albums/o...g?t=1325284354 Do not worry about your difficulties in Mathematics. I can assure you mine are still greater. - Albert Einstein take a walk down memory lane... |
#8
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Sorry
Quote:
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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine) Raleigh NC - Home of deep fried sushi! |
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