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#1
10-20-2004, 07:36 AM
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How long until a 85 300D bad bearing/rod fails or is it my Head gasket?
This summer I plugged my breather hose on my 85 300d and my engine ran down to 1 qt of oil. After that my engine was noisy and shook like it would jump out of the compartment, made all kinds of rata tat sounds and metal hammering sounds.
I kept the car on the road and even took it to Virgina high in the mountains, waiting for the engine to fail. It wouldnt!!!! One day I got a brainstorm and changed the IP and suddenly the engine sounded like it was new...I found out the old Ip literally had two cylinders not running..and a badly leaking ALDA..the low oil had killed the IP.. That was 10K ago. The engine still runs. Somedays its so quiet, it sounds new. Other days I swear I can hear a bad rod or bearing. Sometiems I think I have a hole in the Exhaust. Somedays I swear the car sounds perfect.. This morning I came in to work and it sounded Brand New! Tonight I know it will sound different. The noise is dependent on IP timing, the better I time it, the quieter it gets ( I think) My question is , how long until a bad bearing or rod finally fails Big Time? Could the failed IP introduce a "lean Condition" which could have trashed the Head Gasket? I definitely hear a maetallic ring on some days after a cold start. Could anything else be wrong? I have really stressed this car , trying to get the engine to fail, i have taken it up mountains, had it to 100 mph...Maybe I should just get a loud Radio and ignore it...finally why do I think its an Exhaust leak somedays? 
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#2
10-20-2004, 07:46 AM
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Bearing/rod
At what RPM do you hear the rod/bearing noises? I have read, and cannot find the page, that rod/bearing noises get much louder after 2500 rpm. The faster the rpm the louder the noises. Maybe some of the techs can chime in.
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1984 300D Turbo Sedan (Hilda) 272,115 miles.....  Anthracite Gray/Palamino Leather, I am 3rd owner 2001 Dodge Stratus (Silver) (wifes) 55814 miles...  1982 280TE Wagon Astral Silver Metallic/ Anthracite Velour 260,512 miles (Eva) 1969 230 Sedan Olive Green/Black MBTex 4 Speed Manual 84,213 miles ???? Haus Frau 2004 Boreem Ninja Pocket Bike Highly Modified 49cc (Ling Ling) Einigkeit und Recht und Freiheit
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#3
10-20-2004, 07:58 AM
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Almost forgot
Have you ever removed the inspection/cover plate near the torgue converter? It is oval in shape. There is a flex plate in there held in by six bolts. If a bolt is loose or missing it can sound like bearing or rod going bad. With the low oil level maybe not, but I always look for the cheapest easiest way out. Good luck!
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1984 300D Turbo Sedan (Hilda) 272,115 miles..... Anthracite Gray/Palamino Leather, I am 3rd owner 2001 Dodge Stratus (Silver) (wifes) 55814 miles... 1982 280TE Wagon Astral Silver Metallic/ Anthracite Velour 260,512 miles (Eva) 1969 230 Sedan Olive Green/Black MBTex 4 Speed Manual 84,213 miles ???? Haus Frau 2004 Boreem Ninja Pocket Bike Highly Modified 49cc (Ling Ling) Einigkeit und Recht und Freiheit
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