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-   -   po 122 code (https://www.dieseltruckresource.com/forums/24-valve-engine-drivetrain-89/po-122-code-321026/)

jigdog Feb 14, 2015 02:25 PM
po 122 code
 
have had a hard start when facing up hill all the fuel return seals replaced. Now if its pointed up hill and plugged in at night it fires right up, and i have a p122 code,the hard start started when the weather started getting cold could use some input diagnosis on this. thanks

DIESELWRKS Feb 15, 2015 05:25 PM
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jigdog Feb 27, 2015 10:41 PM
found problem
 
Originally Posted by jigdog (Post 3267726)
have had a hard start when facing up hill all the fuel return seals replaced. Now if its pointed up hill and plugged in at night it fires right up, and i have a p122 code,the hard start started when the weather started getting cold could use some input diagnosis on this. thanks
the uphill hard start was a fuel return line leak on the back of the head and the fuel pressure guage line was letting air in,the 122 code i think was low batteries or a ground,erased code hasn't come back.:cool:


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