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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 07-29-2013, 06:13 PM
Twoface Twoface is offline
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Mein Auto: 2004 bmw 325i m3 clone
1998 318i HELP misfire!

I have a 1998 BMW 318i 5 speed I got about 5 months ago. I put a new clutch in it as soon as I got it along with control arms and a blower motor. It ran like a new car. Well about a month ago it started spitting and sputtering when you would get on it a little but but then clear up. Now it does it a lot, almost everyday. Some days it doesnt do it, it will run like a champ, others, it does it constantly. Codes kicked on as oxygen sensor bank 1 sensor 1 (which has been on since i got it), random multiple misfire detected, and crankshaft position sensor( which was changed). I cleared the codes to see if it would help, but it didn't. I sprayed carb cleaner around the intake to see if there was a vacuum leak, nothing. When it sputters, its been backfiring through the intake lately. I replaced the spark plugs, which I found out they were covered in oil from the spark plug tube seals leaking. HELP I dont know what else to do.
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  #2  
Old 07-29-2013, 08:24 PM
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drivinfaster drivinfaster is offline
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well, you could fix the valve cover leak, for one thing...

you could also check the ignition leads by spraying them with a fine mist of water. if this induces a bunch of misfires, then you have faulty ignition leads and should replace them.




df
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Old 08-01-2013, 07:16 AM
Twoface Twoface is offline
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Mein Auto: 2004 bmw 325i m3 clone
Well I think it was the tube seals. I took the valve cover off and fixed that. The tubes were around 3/4 way full of oil. Talk about hard to clean. But it still doesn't seem like it has the h/p it once had. The plugs may have 6000 miles on them so I don't think it's them. I ran Bosch copper supers so idk
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  #4  
Old 08-01-2013, 07:45 AM
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TheFinanceGuy TheFinanceGuy is online now
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The plugs have 6,000 miles on them, how about the wires? Even still, at about $40 bucks worth of plugs, I'd replace them.
Also check for vacuum leaks under the intake manifold and around the DISA valve. The DISA valve is about $150ish, but I had leaks all around mine causing a small loss of power around the 3,500+ RPM range (iirc).
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Old 08-01-2013, 08:05 PM
Twoface Twoface is offline
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DISA valve? Where is that lol. I work at autozone and know a pretty fair amount about vehicles, well all but euro cars. Always dealt with civics, Chevys and fords. But I've never heard of that. I've tackled 2 different bimmers in the past month and about to go on to #3. The 328i was the worst but I've fell in love with the European scene

Last edited by Twoface; 08-01-2013 at 08:17 PM. Reason: Spelling
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  #6  
Old 08-02-2013, 05:06 AM
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TheFinanceGuy TheFinanceGuy is online now
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The DISA valve controls the variable length intake manifold area on the M44 engine. It is located inside the intake manifold, and gives better torque at low RPMS by closing keeping the intake runner longer but after about 4500rpm, it opens up by and makes the intake runners shorter.



Its number 6 in the picture above with part number 11 61 1 438 404 often called an adjuster valve by BMW.
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