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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 02-04-2004, 11:48 AM   #1 (permalink)
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Ok... first question. my 92 325i has been backfiring alot. On acceleration, deceleration, idleing etc... I thought it was the spark plugs so I changed them. Found considerable oil in my 2nd camber, so I changed my valve cover gasket. doesn't leak anymore, but still backfires. I looked in the repair manuel and it says something about my timing, but that's a major repair. Anyone experience this before? Do you guys think it could be my coil packs are not working or what?? Any help would be appreciated guys.
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Old 02-04-2004, 12:50 PM   #2 (permalink)
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what do you mean by it could be your timing? Do you mean your timing belt or the timing it's self. If it's just your timing it is not a major repair, timing belt just involves changing the belt.
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Old 02-04-2004, 12:55 PM   #3 (permalink)
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FYI, the e36 uses a timing chain. If you changed the gasket already and its not leaking then your timing could be off, but there could other things too.
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Old 02-04-2004, 01:44 PM   #4 (permalink)
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yeah it could be other things. That's why I was wondering if you guys think it's the spark plug coil packs? I'm trying to keep it to unecessary repairs. Yes, when I say timing I meant timing belt. Thanks.
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Old 02-04-2004, 02:40 PM   #5 (permalink)
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Does your car have gas? cause that could be a problem, are you embarrassed when your car rips a few in public?

sorry,,, on a serious note..
How much is a shop going to charge you to resolve the problem?
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Old 02-04-2004, 02:57 PM   #6 (permalink)
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funny dude, ...that's cool... a timing chain change is gonna run 500-600 bucks. That's why I'm hopeing it's something else. A bit less spendy.
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Old 02-05-2004, 09:37 AM   #7 (permalink)
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I need to change my valve cover gasket. I noticed oil in the spark plug camber in two cylinders while changing the plugs. Is it easy to change or does in require much time and tools?
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Old 02-05-2004, 02:11 PM   #8 (permalink)
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Pretty easy to do... just becareful to keep the area around clean so nothing falls into the valves. the gasket is pretty cheap too.
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Old 02-05-2004, 06:12 PM   #9 (permalink)
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What events led up to the backfiring? Did you just start the car one day and it start backfiring? Have you mis-shifted at highspeed or over-revved the engine? There are a couple possibilities here. Either bent valves from over-revving, the engine has jumped timing, fried coil or you have a coil driver in the DME that fried because of the oil in the spark plug cavity. Most likely the engine hasn't jumped timing unless you have extremely high mileage or you over-revved the engine which also may have bent the valves. Because you stated there was considerable amounts of oil in the number 2 hole, I would look towards the number 2 ignition coil as your problem. Go buy one and try swapping it out. If it works then great. If not, return it. Then I would be concerned about the DME.
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Old 02-05-2004, 10:18 PM   #10 (permalink)
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Quote:
Originally posted by El Presidente@Feb 4 2004, 02:35 PM
FYI, the e36 uses a timing chain. If you changed the gasket already and its not leaking then your timing could be off, but there could other things too.
all e36s?

and about when do they need replaced... I'm a noob i know it...
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Old 02-05-2004, 10:24 PM   #11 (permalink)
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typcially you do not need to replace them unless they are noisy. It is recommended if ever you rebuild an engine or replace the head that you replace it (since you are already there). Sometimes the hydraulic tensioners will fade over time and make noise also. That is a simple fix.
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Old 02-05-2004, 10:27 PM   #12 (permalink)
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A major weakness on e34's are the timing belts...replaced pretty often...maybe it carried over onto the e36
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Old 02-05-2004, 10:35 PM   #13 (permalink)
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not from the sounds of things so far....
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