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hey BOSS999, yeah I'm one of the fortunate( :/ )ones to have the m40 platform in my 1993 e36 O.o.... I didn't really know too much about my motor until i started researching the timing issue i have seem to be having. I was actually quite surprized that this engine is only a SOHC, it has quite alot of spunk for a 1.8 4cly car. but anywho i'm having the sperratic exceleration problem that alot of m40 owners have had. I think the only solid information for my problem is that the m40 has preoblems with eating thru cam shafts.
What happens is my car has a rough idel after a cold start. it will radicaly idle from 500 to 1000k. After engine is warmed the car idles fine. i belive this is due to a dirty ICV or AFM. but i can live with that problem.
Moslipping goes away. i have read on multipule forum threads that this motor will need to have its cam shaft replaced after so many miles. I just want to know if anyone has had thier camshaft replaced becuase of this problem and if work like i herd.
re recently is seems to be, put best, stalling out under heavy throtle. i press the gas and there is no go got just a clicking/lightback firing sound. then after a few seconds doing this the engine catch's and goes.... i usually have this porblem on first and second gears during acceleration and 3 and fourth gear at low speeds. the car still has good pull once the slipping stops.
Originally Posted by BimmerNoob
One more problem: the rear exhaust/silencer is blowing a little. I can't afford a new exhaust at the moment and would rather sort out the running problem first.
First the engine is a DOHC. Second, it's 1.6 LT. Third they do on eat through cams. The only true problem is that the break timing chain idler pulleys. Do not use conventional motor in these motors and you will probably never destroy the cams.
A BMW technician helping in providing actual facts to the internet
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