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Old 02-03-2018, 11:08 PM
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Diseasel300 Diseasel300 is offline
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Join Date: May 2016
Location: Texas Hill Country
Posts: 5,132
Having used the 617 bolt on a 603, I wouldn't suggest that route. The 60x injection pumps use a self-bleeding fuel system with a different type of banjo bolt. The "check valve" in them is a very basic disc style valve with a very weak spring on it. The pressure restriction is due to a drilled orifice rather than spring tension. The 61x style bolt is a traditional check valve where pressure is regulated by spring tension. Since there is no primer handle on the 60x engines, any air that gets caught in the IP will not be bled out and can cause long cranks or rough starts. If you suspect the valve in your banjo bolt has failed (and they do fail), buy a new one, they aren't that expensive.
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