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<p>[QUOTE=&quot;Cjkcustoms, post: 11864119, member: 330037&quot;]Hi guys I have a 1980 mack I&#039;m trying to get running correctly.&nbsp; It starts and runs but when it idles for about 5 min it stumbles and stalls out.&nbsp; When this happens It cranks long and finally starts.&nbsp; I thought it was sucking air so I replaced all the fuel lines as I thought it was sucking air.&nbsp; The fuel filters are new and have been filled I&#039;ve primed all the way to the injection pump and this still happens.&nbsp; I&#039;m a mechanic but not a diesel mechanic.&nbsp; I understand how the engines work but when It comes to drivability issues I&#039;m laxed.&nbsp; I&#039;d like to exhaust all possibilities before I shoot the lock off the wallet for an injection pump[/QUOTE]</p><p><br /></p>

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