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Nov 13, 2011 20:41:13 GMT
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I got a 1998 BMW 328i , parked it up the other day and car was running fine , now it just spins over really quick as if the timing chain has snapped but it has'nt , both chains and tensioners are all good , there was no noises or rattles and its still quiet now when it spins over . Anyone got any ideas please .
Thanks in advance .
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Mr S
Posted a lot
10-4 Good buddy.
Posts: 2,654
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Nov 13, 2011 20:54:30 GMT
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Camshaft snapped so leaving valves open, hence lack of compression and easy to spin over perhaps?
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Suzuki GSXR1000 K2
BMW R1150GS
BMW K1200RS
Chevy K5 Blazer
Chevy Suburban LT
Jaguar XKR
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Nov 13, 2011 21:13:08 GMT
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erm possible but surely there would have been some noise when it went , there was nothing at all when i parked it , looks like its gonna be a engine out tomorrow and see whats going on , i was hoping for a quick easy fix .
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Nov 13, 2011 21:15:30 GMT
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Why not take the cam cover off first and have a look?
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Nov 13, 2011 22:44:49 GMT
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Yep thats the first thing to do tomorrow but seems weird there is no nasty noises .
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Nov 14, 2011 17:54:09 GMT
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Try looking down the filler neck when a mate spins it over - you might be able to see cams/valves moving and check oil is circulating. Or take a sparkplug out and check for compression & spark when it's out? Just checking the obvious here - make sure the motor is turning over when you use the starter (just to rule out a sticky starter that's not engaging properly) These do sound odd compared to most cars I've had as the 6 cylinder setup is normally a lot quieter than 4-pots. Hope you get sorted  |
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Nov 14, 2011 19:20:34 GMT
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before you rip the engine out,
you didnt by chance start it to move it ten yards then switch it off did you?
this is pretty common with injected motors, if the answer to the above is yes its flooded!! believe it or not!! full throttle and turn engine til it fires, or remove plugs and dry them
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Ads 19
Posted a lot
My old r19
Posts: 1,351
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sounds like low compression. spin it over does any part of manifold get warm. my 520 with blown head gasket only has compresion on 2 cylinders. spins over fast!
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Nov 15, 2011 10:04:02 GMT
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I give up , got it in workshop and tried it again , still spinning over really fast and not trying to fire , Removed coil pack , covers etc and check chains again , everything looks good so try spinning it over with covers off and coil pack out , It spins over properly , Put everything back as it was and it starts first time and runs sweet as a nut , WTF, Only thing i can think of is a intermittent fault with the vanos unit but i don't know much about thenm so not sure if thats a option .
Thanks for everyones help , gonna run it for a few days and see what happens .
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