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455 olds boat motor not firing cylinder 4

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Old August 1st, 2014, 03:38 PM
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455 olds boat motor not firing cylinder 4
Out on the boat last weekend when the motor shut off, started it back up and it was not running right. Got it home and cylinder 4 is not firing but is getting fuel. Any thoughts??????
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Old August 1st, 2014, 03:51 PM
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Have you checked for spark? What kind of distributor? Is the wire good? Cap?...
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Old August 1st, 2014, 03:57 PM
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Getting spark, replaced the distributor with a msd and having same problem.
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Old August 1st, 2014, 03:58 PM
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Gonna do a compression check, praying the compression is fine!!!
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Old August 1st, 2014, 05:48 PM
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Compression was 15 on cylinder 4, guess summer is over this year. Motor rebuild here we come.
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Old August 1st, 2014, 05:51 PM
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That sux
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Old August 1st, 2014, 06:05 PM
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You know what they say, only two good days to own a boat......the day you buy it and the day you sell it.
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Old August 1st, 2014, 07:18 PM
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Ya gotta to play with something. Boat, car, motorcycle...
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Old August 2nd, 2014, 06:56 AM
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It may just be a valve spring? Easy to check.
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