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308 running on 6 cylinders
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wannabe51 Offline
#1 Posted : Tuesday, 29 January 2013 9:49:36 PM(UTC)
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Hi All,

My 308 has developed a miss and is running very rough.
I have replaced the Distributor cap, rotor button,plugs and leads leads (it is electronic dizzy) still no change.
I would have thought if the cam or lifters were faulty there would be a noise or "chuffing" sound.

Any advice welcome and appreciated.

thanks Dave
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Dr Terry Offline
#2 Posted : Tuesday, 29 January 2013 9:56:52 PM(UTC)
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I would start with a compression test.

Dr Terry
If at first you don't succeed, just call it Version 1.0
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HK1837 Offline
#3 Posted : Tuesday, 29 January 2013 11:40:33 PM(UTC)
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Does the coil have 12V to it or is it a proper HEI coil (assuming it is a HEI setup)?
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wbute Offline
#4 Posted : Wednesday, 30 January 2013 12:05:16 AM(UTC)
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Cam shaft could be worn out. Common with cars that have done lots of slow running.
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commodorenut Offline
#5 Posted : Wednesday, 30 January 2013 6:40:37 AM(UTC)
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I'm with WBute - the OEM cam lobes aren't too good on old motors that have been stored for a while & used - it's a common failure point.
Cheers,

Mick
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wannabe51 Offline
#6 Posted : Wednesday, 30 January 2013 11:44:44 PM(UTC)
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Thanks to all who have provided advice.
I will run a compression test, but fear it is the camshaft.
Thanks again, Dave
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wbute Offline
#7 Posted : Thursday, 31 January 2013 1:21:07 AM(UTC)
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Tapping noise for lifters. Chuffing sound for burnt out valve. Missing all together for cam lobe gone/ignition problem. If you pull the rocker covers off and wind it over you will soon see if there is a cam lobe gone and which ones by watching the rocker gear moving/ not moving.
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