Hello Aidan and Edward Last summer (winter for you) time I sent to a mechanic shop my Fiat UNO DS with a model 127 A, 1.3 L diesel engine. It has his piston rings and valve seats damaged by dust and mud of my countryside roads.
After they finish, I had a milder problem like you describe, with oil level at its maximun, the engine sometimes ran wild but not too much with lot of white smoke when I step hard on the accelerator pedal and the oil consuption was 1 litre in 100 Km (:-o I had the same feelings about the shop mechanic like you Aidan. I solved the problem after I added a screen wire in the exhaust duct from the engine block to the air intake. It was the mist of oil that produce the problem, after that, oil consuption was nill to the next oil change. The mechanic fault was that he forgot the add a screen on that duct, the original spare part was not available locally. I hope this helps. Best Regards, Juan --------- From: Neoteric Biofuels Inc [SMTP:[EMAIL PROTECTED] Sent Oct, 19, 2003 05:17 PM For biofuel@yahoogroups.com Subject: Re: [biofuel] Off topic. Mechanical help Aidan: I think if you had no seals, it would not have fired up - no compression. You say it ran ok on the first go, then you shut it off and topped up the fluid levels....any chance you overfilled the crankcase, getting a false reading from the warm engine? Check the oil level again and see. Too much oil in the crankcase, and it might have been forced into the combustion chamber, causing the diesel to run on the oil (runaway), which caused more compression the excess oil, more oil forced into the combustion chamber, and so on. Check the oil level cold. You've burned some up and otherwise sent it away now, so it might be back to "max"...but may have been too high. If it checks out as being ok, cold, then maybe try it once more, but be ready to shut it down instantly -*** and be ready to do so by cutting off its supply of AIR, as your backup plan, in case it tries, successfully, to run on engine oil from some other source than the above, and you are not so lucky this time having the fuel cutoff solenoid get the thing stopped. I do not know the best thing to use to cut off air supply, but DO plan in advance to be able to do so before you start it again. I think a big, thick towel bunched up and ready to jam over the air intake would do it, but perhaps other list members can help on that. A diesel runaway is a scary thing. Good thing you were able to get it shut down quickly and it did not get totally out of control, in which case you've have ended up rebuilding it again or replacing it, after you'd run for cover, and after it (maybe) destroyed itself after burning up its own oil. RE: comment about "not crank over easily by hand"...a diesel with good compression (new rings, all warmed up, and lots of oil everywhere!) would not be easy to crank by hand in any case, would it? Good luck Edward Beggs On Sunday, October 19, 2003, at 07:23 AM, A Wilkins wrote: > Hello, > > I have mechanical question which I hope someone in the group can > help me with. > > Yesterday evening I finished rebuilding my 90 jetta diesel. I had > the head rebuilt, replaced the connecting rod bearings, rings and > ridge reamed the cylinders. Everything went together nicely. I > started the car and it puffed a little smoke as it ran, I ran it for > about 2 min. and shut it down to check the oil and coolant levels. I > toped them up and started the car once more. > > This time the car ran for about 1 min. then it raised it's rpm > and started to smoke like a bugger. I immediately shut the car off. > It appeared that massive amounts of oil was entering the exhaust pipe. > The engine would not crank over easily (by hand). It sounded like > there was a lot of oil in the cylinders. This was 10:00 pm. At this > point I was very concerned and upset. > > I tore the engine down (again) and removed the head. Just as I > had suspected there was a lot of oil in the cylinder(s). I was > surprised to see that there was oil in all the cylinders. What I > would like to know: is it possible that the shop which rebuilt the > head forgot to put in some valve seals? would this cause the > cylinders to flood? I can not think of anywhere else that the oil > could come from. The head gasket was seated perfect around the > cylinders ( imprint on head ). > > I would appreciate any advice as I am now very disappointed. I > was planning on converting to SVO after a week of running din-diesel. > :( > > > Thank you, > > > Aidan > >/ ------------------------ Yahoo! Groups Sponsor ---------------------~--> Rent DVDs Online - Over 14,500 titles. No Late Fees & Free Shipping. Try Netflix for FREE! http://us.click.yahoo.com/Tq9otC/XP.FAA/3jkFAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
