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#16
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I made sure to verify that the smoke is only coming from the EGR tube that goes into the intake manifold. Also, the tensioner bushing is bad I believe causing some of that extra noise.
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#17
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The engine sounds fine to me. I did not hear a miss. The smoke is exhaust from your EGR tap into the exhaust. The blast of smoke when you come off the throttle could be from the turbo. Does the exhaust smell like burnt oil or unburned diesel, when you have white smoke?
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'97 E 300 D |
#18
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It definitely has a miss that correlates with the white smoke, it does not smell like burning oil.
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#19
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The white smoke is normal out the EGR... I literally don’t hear a misfire. A misfire is a lot different than what you’re experiencing. I don’t think it’s the turbo. You would smell oil out the exhaust and it could be either white or blue. Personally if every o-ring is replaced, and every line, it could be a dirty or clogged injector.
What I’d do is diesel purge it. Depending on the mileage too and the quality of the fuel that was put in it in the past, it could need new nozzles and for them to be re-shimmed. |
#20
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I originally thought it was injectors, but just got them back and installed from Greazzer for nozzle replacement and cleaning them with no real change in how it runs.
I guess I should take a vid of the exhaust also, it has a steady white smoke when warm even when it sounds like it's not missing. You guys are saying it isn't missing and maybe I'm miswording it, but it definitely skips and misses when I'm giving it light throttle and it starts smoking worse during that. Sent from my SM-N950U using Tapatalk |
#21
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Sure looks like it's missing/sputtering in the video to me. Maybe the ones who claim it isn't didn't watch the video clip? You can even see it puffing and sputtering from the white smoke blowing out the EGR pipe.
Don't underestimate the impact that worn valves/guides/seats can have on performance. A compression test may tell you something, a leakdown test would tell you more. |
#22
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How many miles are on it? My daily needed it’s heads rebuilt at about 320k, had the whole head rebuilt. Has every o-ring and every line been replaced? It wouldn’t hurt to do a compression test.
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#23
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It has 175k miles, and I replaced every plastic fuel line, rebuilt the injectors, new sov oring, cleaned the fuel strainer in the tank and replaced both pre filter and fuel filter. I also put a new supply line from the firewall to the fuel heater.
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#24
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Compression and or leak down test.
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
#25
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It is definately missing in the video when revved , the turbo is fine as no oil mist is coming from intercooler pipe.
Earlier someone mentioned cracking injector pipes open , doing this whilst its being held at higher revs may see the smoke stop once the cylinder if any are bad are denied fuel. Remove exhaust from turbo and run it open pipe to rule out blocked catylitic converter. White grey smoke is unburnt fuel usually this would clear as the revs rise and cylinder compression rises giving a better burn. I have had the inlet manifold off mine at least six times over the years for o rings and replacing hoses and even running veg and biodiesel the fumes from egr are minimal. |
#26
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Whats is the crankcase breather doing while all this is going on ? , is it functioning ? , is that throwing out excessive fumes ?.
Is the lift pump supplying enough fuel to allow it to rev ?, revs rise smoke starts |
#27
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I hooked up a low pressure inline lift pump to help put pressure on the fuel system, it made no difference with how it's running.
I'm at a loss, I really just bought the car as a toy but I'm not sure what to do with it at this point. I don't mind working on it but I'm not going to pour a bunch of money into it trying to diagnose what is wrong. I will say I've never been so frustrated trying to find out an issue on a vehicle. I can't imagine it being a head issue, I am leaning towards it being am issue with the injection pump. Sent from my SM-N950U using Tapatalk |
#28
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Quote:
Give this a look and see if it gives you any ideas: 1999 W210 E300TD White Smoke
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96 E300d |
#29
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Quote:
Misfiring and white smoke is nearly always an injector issue or compression issue. The IP's are remarkably durable. |
#30
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Concerning the Fuel Injection Pump. People including mechanics often blame the thing the understand the least. That frequently happens with the Fuel Injection Pump.
Trouble shooting requires you to look at what it most likely the issue first but continue down a logical path if the most likely was not the issue. When people and Mechanics replace a part and that did not help the situation the common comment is something like "it is old and needed to be replaced anyway". Which is no excuse for not trouble shooting properly. And, yes I have been lazy and skipped steps in troubleshooting only to find out that the item I did not check was the cause of the trouble.
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84 300D, 82 Volvo 244Gl Diesel |
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