Filter head leaking - Chevy and GMC Duramax Diesel Forum
04.5-05 LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 11-19-2012, 07:52 AM   eBay Motors  #1 (permalink)
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Filter head leaking

My truck has been starting for 3 seconds in the morning then shutting off. I traced it to the fuel filter head. Seems like truck is loosing prime overnight. I did the research and ordered the rebuild kit, but in second looks, it appears to be bubbling from the location in the picture. I dont think the rebuild kit addresses this location. What is this sensor and how do I stop it from leaking?


Last edited by Gunpilot; 11-19-2012 at 08:15 AM.
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Old 11-19-2012, 09:37 AM   eBay Motors  #2 (permalink)
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That's not a sensor, it's your fuel heater.

This video will show you what's included in the rebuild kit:
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Old 11-19-2012, 09:53 AM   eBay Motors  #3 (permalink)
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The rebuild kit does come with a new o-ring for that spot, you'll be good once you do the rebuild
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