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#1
02-10-2006, 01:19 AM
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Bad Injector... how to verify?
I believe I have a bad injector on my SDL, what's the best way to verify that this is indeed happening?
Thanks 
__________________
I'm not a doctor, but I'll have a look.  '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG] 
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#2
02-10-2006, 02:07 AM
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I would swap in another injector and see if theres any difference. If you dont have one laying around you could have it hooked to a hard line OUTSIDE
 the engine and look at the spray pattern, (when cranking, not running) see if it drips. I've never done this, its eaiser to just stick in another. You could crack each injector line and figure out which cyl has a problem and swap injectors and see if the problem follows the injector.
__________________
 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"
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#3
02-10-2006, 02:18 AM
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The sound is centralized within the motor... could I put a piece of hose to the injector then the other side to my ear like a gasser to give any idea of which one is bad?
__________________
I'm not a doctor, but I'll have a look. '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]
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#4
02-10-2006, 02:32 AM
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Quote:
__________________
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"
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#5
02-10-2006, 02:45 AM
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I'll give it a shot tomorrow, I was going to go back out to play but I haven't slept in days so I'm beat.
__________________
I'm not a doctor, but I'll have a look. '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]
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#6
02-10-2006, 04:20 AM
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The best way is to hook up the injector to a tester and observe the spray pattern. I guess you don't have a tester. What makes you think you have a bad injector? Typically you would hear pinging while cruising if you had a bad injector.
__________________
2004 VW Jetta TDI (manual) Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL
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#7
02-10-2006, 04:25 AM
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Quote:
Idle sound is a bit different than the 603s I've heard on here. I thought it could be injector. T-chain is okay, maybe IP needs to be timed. 
__________________
I'm not a doctor, but I'll have a look. '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]
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#8
02-10-2006, 09:35 AM
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Quote:
__________________
'82 300SD - 361K mi - "Blue" "Good judgement comes from experience. Experience comes from bad judgement." listen, look, .........and duck.
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#9
02-10-2006, 10:16 AM
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IIRC, I had a tech take my injectors out and he hooked it up to a machine at the MB shop that did a spray pattern test. While it was OK 40K ago, I think that when it warms up, I will take them out again since they have 100K now and more later and have them cleaned and checked.
__________________
01 Ford Excursion Powerstroke 99 E300 Turbodiesel 91 Vette with 383 motor 05 Polaris Sportsman 800 EFI 06 Polaris Sportsman 500 EFI 03 SeaDoo GTX SC Red 03 SeaDoo GTX SC Yellow 04 Tailgator 21 ft Toy Hauler 11 Harley Davidson 883 SuperLow
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