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 Fuel Leak on 3126 Cat in Chevy C7
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bwest
Administrator

United States
3820 Posts

Posted - 03/07/2019 :  09:32:00 AM  Show Profile  Reply with Quote
OK, guys. I have a 3126 that is leaking fuel from behind the fan mound at the front of the head. I cannot see a fitting there or anything. I wondering if anyone else has had this problem. I would just like to know what's going on before I take everything apart.
Thanks

krmvcs
Advanced Member

362 Posts

Posted - 03/07/2019 :  10:04:01 AM  Show Profile  Reply with Quote
I only have a couple cats and the only thing I can think of is that all of them have a fuel return line right there at the top of the head. Usually hidden behind a lifting bracket.

-Ken-
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Bluenozer
Top Member

Canada
640 Posts

Posted - 03/07/2019 :  10:43:32 AM  Show Profile  Reply with Quote
just ran out and looked at one
passenger side just behind the housing which the HPOP(high pressure oil pump) is bolted to there is a fuel line into the head

OEM trained in wiring and all engine platforms for over 20 years
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RonF
Top Member

867 Posts

Posted - 03/07/2019 :  11:33:24 AM  Show Profile  Reply with Quote
quote:
Originally posted by bwest

OK, guys. I have a 3126 that is leaking fuel from behind the fan mound at the front of the head. I cannot see a fitting there or anything. I wondering if anyone else has had this problem. I would just like to know what's going on before I take everything apart.
Thanks



Behind the fan mount is a hex head plug with and o ring on it. Remove your fan mount and you will find it.

US Army retired CMBT
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bwest
Administrator

United States
3820 Posts

Posted - 03/07/2019 :  12:07:06 PM  Show Profile  Reply with Quote
quote:
Originally posted by RonF

quote:
Originally posted by bwest

OK, guys. I have a 3126 that is leaking fuel from behind the fan mound at the front of the head. I cannot see a fitting there or anything. I wondering if anyone else has had this problem. I would just like to know what's going on before I take everything apart.
Thanks



Behind the fan mount is a hex head plug with and o ring on it. Remove your fan mount and you will find it.



Bingo! Got it! Thanks everyone!!

Bryan
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Bluenozer
Top Member

Canada
640 Posts

Posted - 03/08/2019 :  02:42:09 AM  Show Profile  Reply with Quote
quote:
Originally posted by Bluenozer

just ran out and looked at one
passenger side just behind the housing which the HPOP(high pressure oil pump) is bolted to there is a fuel line into the head



sorry drivers side long day yesterday

OEM trained in wiring and all engine platforms for over 20 years
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bwest
Administrator

United States
3820 Posts

Posted - 03/08/2019 :  05:25:08 AM  Show Profile  Reply with Quote
quote:
Originally posted by Bluenozer

quote:
Originally posted by Bluenozer

just ran out and looked at one
passenger side just behind the housing which the HPOP(high pressure oil pump) is bolted to there is a fuel line into the head



sorry drivers side long day yesterday



Yeah, that was what was throwing me off on this. There's nothing on the passenger side that has fuel in it. It's fixed now. Thanks

Bryan
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