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> OT: Need some Diesel advise, Oh great collective, bathe me with your knowledge!
Dr Evil
post Jul 2 2007, 12:09 AM
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This weekend has been very productive! All of my vehicles are at least turing fuel into noise. Now it is time to make it useful.

I put the fuel pump back in my Benz (it was out because I thought it was problematic). I adjusted the lever that actuates it and it now starts, but it runs rough.
-White smoke
-Knocks more than a diesel should
-Has no power (less then before (IMG:style_emoticons/default/wink.gif) )

I made sure to NOT crank the engine with the pump removed and to keep the pump shaft from rotating so as to keep the orientation of the shafts in both correct. I may be off a little in my adjustment, but adjusting it will be a shitty task and I would like some veriffication that it is out of adjustment from someone more knowledgable than I before I go a bleeding all over the engine again.

In summary:
- Do the symptoms scream of any particular problem?
- any advice?

Thanks all!
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BiG bOgGs
post Jul 2 2007, 12:20 PM
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Sorry Dr., I should have said to crack the lines open at the injectors while the engine is running. This will allow the fuel to purge the air in the lines and then when you retighten the lines it should immediately run smoother. If you crack a line and retighten it and the sound of the engine doesn't change at all you may have a problem with that injector.

My diesel engine experience comes from swapping a VW 1.6L Turbo D into my Suzuki Samurai. With the VW's the timing is set by using a dail indicator attached to an opening in the rear of the injection pump. Then the pump is moved toward the engine to advance the timing, or away to retard. Whith most for these engines being pretty old, it is usually best to adjust the pump, run the engine and see how it sounds, then re-adjust until you get it where you want. I would find out how the timing is adjusted on your engine, and then play a bit.

After you have it sounding right you can keep an eye on your temp readings to see if it is set right. If your oil temps get pretty high and your exhaust temps are low, you are probably on the advanced side of the timing. If you have high exhaust temps and lower oil temps (and probably less power) you are running too retarded.
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Dr Evil   OT: Need some Diesel advise   Jul 2 2007, 12:09 AM
Mr.C   How long did you run it? Sounds to me like it may...   Jul 2 2007, 12:18 AM
Dr Evil   Realy? Man that would be awsome. Should I just let...   Jul 2 2007, 12:26 AM
brer   bleed the fuel lines. check that the small bleed o...   Jul 2 2007, 12:32 AM
Dr Evil   bleed the fuel lines. check that the small bleed ...   Jul 2 2007, 12:41 AM
Mr.C   Yeah, if it'll stay running let it go until it...   Jul 2 2007, 12:38 AM
Mr.C   Yeah that definately sounds like air in the lines ...   Jul 2 2007, 12:49 AM
Dr Evil   If your right I am gonna give you a beer :D   Jul 2 2007, 12:56 AM
brer   sounds like you need to drive it really hard uphil...   Jul 2 2007, 01:09 AM
Dr Evil   I will flog it arround the complex tomorrow and re...   Jul 2 2007, 01:13 AM
messix   here's my RX for the good Dr! take with la...   Jul 2 2007, 03:05 AM
Paul Illick   White smoke? Just for giggles once it's runni...   Jul 2 2007, 03:20 AM
bottomend   White smoke? Just for giggles once it's runn...   Jul 2 2007, 04:37 AM
bottomend   White smoke is usually the sign of air in the fuel...   Jul 2 2007, 04:36 AM
BiG bOgGs   If you think it is air in your lines, the simple p...   Jul 2 2007, 06:25 AM
WRX914   If you think it is air in your lines, the simple ...   Jul 2 2007, 01:53 PM
BMartin914   White smoke and rough running can also be an indic...   Jul 2 2007, 07:27 AM
Dr Evil   White smoke and rough running can also be an indi...   Jul 2 2007, 09:52 AM
Dr Evil   Oh ya, another tid bit of info that may lean your ...   Jul 2 2007, 10:44 AM
messix   Oh ya, another tid bit of info that may lean your...   Jul 2 2007, 12:17 PM
Dr Evil   "don't run it any more than it takes to...   Jul 2 2007, 12:28 PM
BiG bOgGs   Sorry Dr., I should have said to crack the lines o...   Jul 2 2007, 12:20 PM
BiG bOgGs   He means not to run it until you are ready to pu...   Jul 2 2007, 12:32 PM
Brian Mifsud   Have you checked the fuel pump timing? I just sol...   Jul 2 2007, 12:37 PM
BiG bOgGs   Another thought. If you do the purge and still fi...   Jul 2 2007, 12:38 PM
brer   Actually, the germans would rather you unscrew the...   Jul 2 2007, 01:08 PM
Dr Evil   Actually, the germans would rather you unscrew th...   Jul 2 2007, 01:45 PM
Brian Mifsud   The crowbar method I believe was an american in...   Jul 2 2007, 03:32 PM
bd1308   If you find that the diesel stuff becomes too much...   Jul 2 2007, 05:04 PM
Dr Evil   If you find that the diesel stuff becomes too muc...   Jul 3 2007, 12:34 AM
Dr Evil   Well genius collective, I cracked all the fuel lin...   Jul 4 2007, 02:02 PM
Mr.C   I would run it for a while and see. Can you adjus...   Jul 4 2007, 02:59 PM
Dr Evil   As far as I know, the fuel can not be adjusted as ...   Jul 4 2007, 03:04 PM
messix   i don't know much about benz but there should ...   Jul 4 2007, 04:15 PM
Dr Evil   Its MFI, I cant find any such adjustment in the li...   Jul 4 2007, 11:27 PM


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