Injector line leak?

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   An injector line started leaking on the 7050. Hard to tell where from or even if I had the right line, #4. The rest were dry except #3 and #4 but #4 had drips coming off it. The return lines are dry. Leak seems to be behind the exhaust manifold or running down from the injector.  I put #4 under water with air pressure and no bubbles. Tried #3 too and no bubbles. Can it be that 50 psi of air won't show a leak? #3 was only slightly wet with fuel but I figured the way the air was swirling it got wet from #4. The fittings at the injector were tight. It has the Allis injectors. What are the experiences out there. Thanks.

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Lonn Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 16 Sep 2009 Location: Назарово,Russia Points: 29792	Post Options Post Reply Quote Lonn Report Post Thanks(0) Quote Reply Topic: Injector line leak? Posted: 09 Nov 2010 at 6:49pm
	An injector line started leaking on the 7050. Hard to tell where from or even if I had the right line, #4. The rest were dry except #3 and #4 but #4 had drips coming off it. The return lines are dry. Leak seems to be behind the exhaust manifold or running down from the injector. I put #4 under water with air pressure and no bubbles. Tried #3 too and no bubbles. Can it be that 50 psi of air won't show a leak? #3 was only slightly wet with fuel but I figured the way the air was swirling it got wet from #4. The fittings at the injector were tight. It has the Allis injectors. What are the experiences out there. Thanks.
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injpumpEd Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 13 Sep 2009 Location: Walnut IL Points: 4960	Post Options Post Reply Quote injpumpEd Report Post Thanks(0) Quote Reply Posted: 09 Nov 2010 at 8:08pm
	I have seen the line crack right next to the ermeto sleeve(ferrule). Should be able to find a good used line. Probably still available new, but pricey(over $100 each). good luck. Ed.
	210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!