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John Deere Tractors Discussion Forum

Timing advance

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04-23-2011 22:41:16

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How much can I safely advance the timing on my 4020 diesel? Late serial number engine with electric fuel shutoff solenoid

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David G

04-24-2011 16:50:05

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 Re: Timing advance in reply to 4020deereboy, 04-23-2011 22:41:16  
I agree with Mike, 2-3 degrees of advance, gas or diesel wakes them up.

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Mike Aylward

04-24-2011 10:16:06

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 Re: Timing advance in reply to 4020deereboy, 04-23-2011 22:41:16  
I have a 4020 similar to yours. On both of mine I advance the timing about the width of the timing mark or a little more. This is probably 2 or 3 degrees and it really wakes them up. Mike

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04-24-2011 05:45:56

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 Re: Timing advance in reply to 4020deereboy, 04-23-2011 22:41:16  
Till the crankshaft breaks but advance above recommended spec wont really offer a power advantage though.

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