Fuel pump/ leak - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jsdoyle · 03-11-2013, 09:52 AM

I went for a long drive yesterday and the truck ran great. Really nice to get it out of the garage!! Warm day with no rain!

When I got back I opened the hood and was checking around and noticed the area below and around my fuel pump was wet. The fuel pump itself had a little clear to brownish liquid in the ring around the top. Likely a little oil mixing in.

The "wet" below the pump appears clear for the most part (not oil) and pretty much has to be gas. It looks like it's being pushed out as I'm running down the road. Starting the truck and letting it idle I don't see a leak.

I don't know a lot about fuel pumps but can replace if needed. Anyone know if the pump going bad would do this or is it a hose issue?

Picture is attached.

Thanks!

geezer#99 · 03-11-2013, 09:56 AM

http://67-72chevytrucks.com/vboard/s...d.php?t=569999

jsdoyle · 03-11-2013, 10:13 AM

Quote:

Originally Posted by geezer#99

http://67-72chevytrucks.com/vboard/s...d.php?t=569999

Thanks for the link! Suppose it's one of those issues. I'll clean it up this weekend and see what I can come up with.

61_FL_Apache · 03-11-2013, 06:50 PM

It looks like you have a bolt in that hole from the link.

jsdoyle · 03-11-2013, 06:57 PM

Quote:

Originally Posted by 61_FL_Apache

It looks like you have a bolt in that hole from the link.

Yeah, it looked that way to me too. I'm checking in a little while.

Scott

bschoolz1 · 03-11-2013, 08:36 PM

ethanol ?

bschoolz1 · 03-11-2013, 08:50 PM

Quote:

Originally Posted by bschoolz1

ethanol ?

likes to eat the gasket

**TBONE1964** · 03-11-2013, 10:13 PM

It is possible for the diapham inside the pump to fail and leak oil/gas out of the vent hole. I would clean it real good around the area and take it for another drive and see if you can pin point it. Another thing is you may be able to make it leak by giving it some revs while running. Sometimes they wont leak at an idle.

Make sure all the lines and clamps are tight also.

jsdoyle · 03-12-2013, 01:34 PM

Good suggestions everyone. I'm going to work on it this weekend.

Might be a good excuse to purchase a "chrome" fuel pump to bolt on (I like shiny parts

).

I see them on ebay in the 35-40 dollar range. Any opinions here on a brand or vender?

03-11-2013, 09:52 AM	#1
jsdoyle Registered User Join Date: May 2012 Location: Lyndon, KY Posts: 225	Fuel pump/ leak I went for a long drive yesterday and the truck ran great. Really nice to get it out of the garage!! Warm day with no rain! When I got back I opened the hood and was checking around and noticed the area below and around my fuel pump was wet. The fuel pump itself had a little clear to brownish liquid in the ring around the top. Likely a little oil mixing in. The "wet" below the pump appears clear for the most part (not oil) and pretty much has to be gas. It looks like it's being pushed out as I'm running down the road. Starting the truck and letting it idle I don't see a leak. I don't know a lot about fuel pumps but can replace if needed. Anyone know if the pump going bad would do this or is it a hose issue? Picture is attached. Thanks! Attached Images __________________ ------ 65 Chevy C10 Fleetside

03-11-2013, 09:56 AM	#2
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,538	Re: Fuel pump/ leak http://67-72chevytrucks.com/vboard/s...d.php?t=569999

03-11-2013, 06:50 PM	#4
61_FL_Apache Who Me? Join Date: Sep 2010 Location: Royal Palm Beach, FL Posts: 4,067	Re: Fuel pump/ leak It looks like you have a bolt in that hole from the link. __________________ Steve 1997 Tahoe LT 4D 2WD (DD) 2001 Blazer 4D 2WD 1961 Apache 10 (sold) 1965 C10 Stepper (sold)

03-11-2013, 08:36 PM	#6
bschoolz1 Registered User Join Date: Nov 2012 Location: raleigh nc Posts: 41	Re: Fuel pump/ leak ethanol ?

03-11-2013, 10:13 PM	#8
TBONE1964 Cluster King Join Date: Nov 2012 Location: Junction City, OR Posts: 5,263	Re: Fuel pump/ leak It is possible for the diapham inside the pump to fail and leak oil/gas out of the vent hole. I would clean it real good around the area and take it for another drive and see if you can pin point it. Another thing is you may be able to make it leak by giving it some revs while running. Sometimes they wont leak at an idle. Make sure all the lines and clamps are tight also.

03-12-2013, 01:34 PM	#9
jsdoyle Registered User Join Date: May 2012 Location: Lyndon, KY Posts: 225	Re: Fuel pump/ leak Good suggestions everyone. I'm going to work on it this weekend. Might be a good excuse to purchase a "chrome" fuel pump to bolt on (I like shiny parts ). I see them on ebay in the 35-40 dollar range. Any opinions here on a brand or vender? __________________ ------ 65 Chevy C10 Fleetside



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