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  #16  
Old 04-02-2002, 04:16 AM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: SF Bay Area
Posts: 19,751
I don't know what to think. I covered the breather port for over 20 seconds and the engine didn't die. It didn't even skip a beat. When I uncovered the port, there was a healthy puff.

FWIW, engine mileage unknown but I have reason to believe it's just under 150K since replaced or rebuilt, Castrol 20W50, I haven't had it long enough to for my 50/50 city highway to sawy whatever the average was before I got the car, I haven't had it long enough to measure oil consumption either. It's the smoothest and quietest 617 I've been in, it starts right up and doesn't smoke that I've seen... and I've looked.

BTW, this was on the SD.

Someone want to tell me what all this means? Could it be a problem with the rack?

Thanks,
Sixto
91 300SE
87 300SDL
81 300SD
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  #17  
Old 04-02-2002, 12:18 PM
Nate Stanley's Avatar
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Location: Watsonville, Ca
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Sixto,

20+ seconds? DON"T SELL THAT CAR!

Maybe it's further proof that these 617's are just broken in at 100K. Congratulations!
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(Currently Benzless)
1985 F-250 6.9l 170K
2009 SCION XB 36.5K
2003 LS430 78K
2012 Kubota B 2320
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  #18  
Old 04-03-2002, 01:03 PM
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Can anyone explain how plugging the breather can cause the engine to stall? How does pressure build up in the crankcase affect the Fuel injection pump (IP). I realize that the IP is controlled by how much turbo boost is developed for running and vacuum for stoping, but how does crankcase pressure cause the IP the stop delivering fuel?

P E H
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  #19  
Old 04-03-2002, 03:22 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: SF Bay Area
Posts: 19,751
That's what I'd like to know. I'd also like to know why it isn't as likely that I have lousy gaskets as that I have a good engine.

Sixto
91 300SE
87 300SDL
81 300SD
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  #20  
Old 04-03-2002, 05:35 PM
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Apparently the other side of the IP diaphragm is not vented to the atmsophere, but is seeing crankcase pressure.

Can we get Larry Bible in on this? I've never seen a Bosch schematic of the IP to know one way or the other.

BTW Bwatson and all the rest of you-
The tech that showed me the blowby trick also showed me how to isolate a bad injector. Start the engine, and lightly touch each of the steel fuel injector lines. a clogged injector will have a stronger pulse to it that a healthy one. On my 300DT, it's #3, and it's easy to feel the difference. In my case, I'm also getting a clicking noise, though the valves are within .001" of spec. He advised me to run a can of Diesel Purge, and swap the injector if that will not work.

This guy is a gem-- He could have charged me for this, instead he taught me something new..

Regards,
Nate
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(Currently Benzless)
1985 F-250 6.9l 170K
2009 SCION XB 36.5K
2003 LS430 78K
2012 Kubota B 2320
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  #21  
Old 04-03-2002, 05:47 PM
sixto's Avatar
smoke gets in your eyes
 
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Nate,

Do you know if the MB Recyclers in Watsonville is back in business? I remember talking to Ian, who had a thick English accent. I'm pretty sure it wasn't an Australian accent.

Sixto
91 300SE
87 300SDL
81 300SD
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  #22  
Old 04-03-2002, 05:55 PM
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Location: Watsonville, Ca
Posts: 399
Sixto,
Regrettably, they went under.

I have no idea where their used parts inventory went, but it was probably a gold mine. They always had a few 107's as well as the usual diesels.

I'm not sure who Ian was, but I dealt with a few guys there, most of whom acted like they wished they were somewhere else besides there dealing with customers, and that's probably one reason why they failed.

Perhaps they have learned the lesson and will do better somewhere else.

the guy I use was recommended to me by the parts guy at Claridge's in Fremont. His shop is in Newark. I'll give you his number if it isn't against message board rules--

Nate
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Nate Stanley
(Currently Benzless)
1985 F-250 6.9l 170K
2009 SCION XB 36.5K
2003 LS430 78K
2012 Kubota B 2320
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  #23  
Old 04-19-2002, 09:45 PM
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How much does altitude affect this test? I live in Denver at 5000ft. My 77 300d has 56k on it and shut down at 5 seconds when cold. Can anyone do the math to translate this into an equivavlent at sea level?
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  #24  
Old 04-20-2002, 01:40 AM
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Location: Cremona, Alta, Canada
Posts: 263
Not to be a wet blanket but plugging the breather and building up pressure in the crankcase can blow out various seals mainly crankshaft seals. Could be an expensive test. Just a thought.
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82 300SD 110k
91 Caprice SS
92 Jetta TD
97 Cadillac Concours(300hp)
84 Celebrity 4.3L diesel
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  #25  
Old 04-20-2002, 02:02 PM
Van Helden
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I just did this test on my 82 240D with 116K. She shut down at between 8-9 seconds. Someone mentioned this only works accurately on turbos. Is this so? Other facts on mine: uses 1 qt pr 1000 miles; I use Mystic 15-40 yr. round; starts extremely well in Northern Iowa yearound; gets up to 60 mph within normal time range per earlier thread (forgot exact seconds); filler cap will dance; some exhaust from inside; I've put 25K on this car and everything is staying consistent; valve adjustment was done 10K back. I'am the second owner on this 4 spd and I know the miles are correct. Does this info. seem accurate for a 240 with these symptoms? Love the car and runs like a champ!
Tony
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  #26  
Old 09-24-2002, 01:33 PM
r90skirk
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BLOW-BY

I'm wondering how unusual this situation is? My TD motor not only has been leaking excessively from the rear main seal (I believe that's where it is coming from) but has also been leaking some oil around the top of the dipstick tube. Has anyone experienced this?

I'm thinking too much blow-by, when I remove fill cap I get a light vapor blowing upwards and a few very small droplets of oil coming out onto the top of valvecover.

Breather tube is not plugged. Air cleaner does get some oil residue deposited in housing.

The thing that seems odd to me is there has been no significant change in start-up, acceleration, performance, mileage. They are all still good.

Has anybody out there thought about attaching another breather hose to valve cover and either let drip into small container or route back to air cleaner to help motor breath or vent?
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