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Order Ford 2600 Parts Online

Re: Gas 2600 Ping/knock

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Author  [Modern View]

02-06-2013 12:34:19

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Spark knock upon cold start up is not normal. If spark knock, check the ignition timing.

Are you sure it is not piston slap?


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Bluegill Bill

02-06-2013 14:24:23

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 Re: Gas 2600 Ping/knock in reply to Dean, 02-06-2013 12:34:19  
If it were piston slap wouldn't it do it all the time and not just at start up? I'm not sure what the timing should be set on, but I do have a timing light and could check but need to find out the correct timing.

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David G

02-06-2013 14:51:39

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 Re: Gas 2600 Ping/knock in reply to Bluegill Bill, 02-06-2013 14:24:23  
No, slap will diminish as the cylinders get splash oiling and the pistons warm and expand. I have never heard of a fast timing issue with a cold engine.

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Bluegill Bill

02-07-2013 14:20:13

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 Re: Gas 2600 Ping/knock in reply to David G, 02-06-2013 14:51:39  
If it is piston slap maybe I should go to a multi-grade oil like a 10W30 or 15W40 so that the oil pump wouldn't have to work so hard at start up and would coat the cylinders quicker. I've been using a straight 30 weight, any suggestions would be great and thanks for the replies.

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