The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 01-18-2021, 12:27 PM   #26
Rich72C10
Mr. Cheyenne
 
Rich72C10's Avatar
 
Join Date: Jun 2020
Location: Kyle, Texas
Posts: 797
Re: Carb to Fuel Pump Hard Line [Leak at Fuel Pump]

Quote:
Originally Posted by geezer#99 View Post
Those flat washers are the wrong shape.
You need a cone shape to seal.
Take a look at my posting with the YouTube, there is a guy that shows you how to make them with a flange tool...

Also, before I wrote the pointy part of the cone goes towards the pump, pretty sure I said that backwards - the pointy part goes into the steel line - like the fellow shows when making a copper washer to in copper flange seal. Just trying to visualize how the steel line, copper flange washer, and fuel pump/carb connection all go together. Likely once I start doing it, it will make sense!
__________________
Richard

'72 Chevy C10 Cheyenne Bronze on White [Hook 'em Horns]
SBC 350 | TH350 | LWB | Buddy Seats
Rich72C10 is offline   Reply With Quote
Old 01-19-2021, 07:12 PM   #27
Rich72C10
Mr. Cheyenne
 
Rich72C10's Avatar
 
Join Date: Jun 2020
Location: Kyle, Texas
Posts: 797
Thumbs up Re: Carb to Fuel Pump Hard Line [Leak at Fuel Pump]

Holy No Leaks Batman!

UPS dropped off the Copper Flare Washers from Grainger and I just got them installed. I barely snugged them down and it appears to be dry as a bone! I started her up and let the engine run for about 10 minutes or so, which the first few minutes was on choke. I am going to let the gas dry out around the engine compartment and when it's not raining do a quick around the block test. Silly I am thinking, this is working?? Ha!

Posting some photos of my line and washers. The 1st one is just the line and I am trying to show what I think is a hump/seam line. It was a lot worse before I wet sanded it with 500 and 2000 grit sandpaper. Before I sanded I could see a hump on the lip of the flare - perhaps this was some of my problem or perhaps that is normal, heck if I know.

The next two are just showing the washer next to the line and the washer setting on top of the line. I put the washer into the fuel pump and into the inlet of the Qjet Carburetor. When I put them on and wrenched it, I really assumed I'd have to give it a little more but no, there was no leak on my first try. Though I did give it a bit more, since I was sure I was too "lite" with tightening them down. But that is still light years away what I was doing yesterday.

Many thanks dmjlambert! Really, I cannot thank you enough - it's like I need to send you money or something LOL
Attached Images
   
__________________
Richard

'72 Chevy C10 Cheyenne Bronze on White [Hook 'em Horns]
SBC 350 | TH350 | LWB | Buddy Seats
Rich72C10 is offline   Reply With Quote
Old 01-19-2021, 07:38 PM   #28
dmjlambert
Registered User
 
dmjlambert's Avatar
 
Join Date: Apr 2016
Location: Cypress, TX
Posts: 2,267
Re: Carb to Fuel Pump Hard Line [Leak at Fuel Pump]

Give Me Money! That's What I Want

LOL. Your findings are same as mine. Just insert gasket, problem over.
dmjlambert is offline   Reply With Quote
Old 01-19-2021, 07:40 PM   #29
Rich72C10
Mr. Cheyenne
 
Rich72C10's Avatar
 
Join Date: Jun 2020
Location: Kyle, Texas
Posts: 797
Re: Carb to Fuel Pump Hard Line [Leak at Fuel Pump]

LOL love that song.... though why I cannot ever get YouTubes to embed like that!

"check is in the mail" ;-)
__________________
Richard

'72 Chevy C10 Cheyenne Bronze on White [Hook 'em Horns]
SBC 350 | TH350 | LWB | Buddy Seats
Rich72C10 is offline   Reply With Quote
Old 01-19-2021, 08:26 PM   #30
Andy4639
Old member
 
Andy4639's Avatar
 
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,870
Talking Re: Carb to Fuel Pump Hard Line [Leak at Fuel Pump]

That's pretty cool. I've never herd of these. I will be checkin' on them though.

Rich72C10, did you order a assortment of them are just the size you needed?

__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver
Seeing the USA in a 71


Upstate SC GM Truck Club
2013,14 and 2016 Hot Rod Pour Tour


http://upstategmtrucks.com/



Get out and drive the truck this summer and have some fun!
It sucks not being able to hear!

LWB trucks rule, if you don't think so measure your SWB!
After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.
Andy4639 is offline   Reply With Quote
Old 01-19-2021, 08:53 PM   #31
Rich72C10
Mr. Cheyenne
 
Rich72C10's Avatar
 
Join Date: Jun 2020
Location: Kyle, Texas
Posts: 797
Re: Carb to Fuel Pump Hard Line [Leak at Fuel Pump]

I just ordered the 3/8th size from Grainger... though if I ever work on my break lines I'll likely order some of those sizes to have on the self (just in case). But the lines/fittings are in real good shape on my truck and haven't been malformed by using the wrong type of wrench (like my fuel hard line was).
__________________
Richard

'72 Chevy C10 Cheyenne Bronze on White [Hook 'em Horns]
SBC 350 | TH350 | LWB | Buddy Seats
Rich72C10 is offline   Reply With Quote
Old 03-30-2021, 04:04 PM   #32
Rich72C10
Mr. Cheyenne
 
Rich72C10's Avatar
 
Join Date: Jun 2020
Location: Kyle, Texas
Posts: 797
Re: Carb to Fuel Pump Hard Line [Leak at Fuel Pump]

Okay, one of the things I talked about in this thread was my short 3-line Fuel Pump. Back when I first tried to get my truck from my brother in Kilgore we ended up replacing the Fuel Pump (long story short, it was trash in the tank NOT the pump). Whilst every parts site says I need a "long" 3-line pump, mine has a shorter one (which comes up for a 73+ C10 350 or even a 72 350 Suburban). So I decided to get a new one today after getting fed up with the "new" one and it's super annoying ticking.

Got one from Lockhart NAPA, Delphi #DFP MF0002 (which I think is ACDelco / GM's part source). It more or less looks like the one I took off but rather than the lower can being brass-like colored, it is more stainless of a color. The one I took off, I think is a Carter or at least it has a Carter part number stamped on the side - #M6626. Then under that number it has 20048 listed.

1. The Delphi MF0002 has no clickety-clack. Man, I hated that sound on the "old" one!
2. I seem to have a better / stable idle.
3. When just putting along and hardly giving/touching the pedal it so much smoother as the RPMs reach shifting time. I have had a odd power like loss at low RPMs - unless I was giving a bit more pedal.

Number 2 and 3 above are total bonus changes in operation, I wasn't aware I needed a new fuel pump but I suppose at low RPM the M6626 pump wasn't giving steady fuel? Eh, I don't know but ~$25 bucks for this Delphi DFP MF0002 was well worth twice that cost to just getting rid of the gosh darn ticking!
__________________
Richard

'72 Chevy C10 Cheyenne Bronze on White [Hook 'em Horns]
SBC 350 | TH350 | LWB | Buddy Seats
Rich72C10 is offline   Reply With Quote
Old 03-30-2021, 04:35 PM   #33
Steeveedee
Senior Member
 
Steeveedee's Avatar
 
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 6,200
Re: Carb to Fuel Pump Hard Line [Leak at Fuel Pump]

The ticking sound was possibly from a gap between the pushrod and lever arm. Or maybe just poppet noise.
__________________
'70 Chevy 3/4T Longhorn CST 400/400/3.54 Custom Camper
Steeveedee is offline   Reply With Quote
Old 03-30-2021, 04:55 PM   #34
Rich72C10
Mr. Cheyenne
 
Rich72C10's Avatar
 
Join Date: Jun 2020
Location: Kyle, Texas
Posts: 797
Re: Carb to Fuel Pump Hard Line [Leak at Fuel Pump]

I don't know what its deal was, it was just annoying as hell. Though now I can clearly hear my water pump making a slight whining / squealing noise. So he'll be getting replaced next I think but it is less annoying.
__________________
Richard

'72 Chevy C10 Cheyenne Bronze on White [Hook 'em Horns]
SBC 350 | TH350 | LWB | Buddy Seats
Rich72C10 is offline   Reply With Quote
Old 03-30-2021, 07:48 PM   #35
Steeveedee
Senior Member
 
Steeveedee's Avatar
 
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 6,200
Re: Carb to Fuel Pump Hard Line [Leak at Fuel Pump]

Could just be the belt. Didn't the engine get a new or rebuilt water pump when it got rebuilt?
__________________
'70 Chevy 3/4T Longhorn CST 400/400/3.54 Custom Camper
Steeveedee is offline   Reply With Quote
Old 03-30-2021, 07:54 PM   #36
Rich72C10
Mr. Cheyenne
 
Rich72C10's Avatar
 
Join Date: Jun 2020
Location: Kyle, Texas
Posts: 797
Re: Carb to Fuel Pump Hard Line [Leak at Fuel Pump]

Getting a new water pump would have been a good idea, in hindsight. I am positive its the water pump giving a bit of a squeaky noise. It isn't all thought loud but I think she is giving me a hit ;-)

What sucks, is that I'm going to have to rattle paint the replacement... if I could only go back in time (hums, Cher – If I Could Turn Back Time).
__________________
Richard

'72 Chevy C10 Cheyenne Bronze on White [Hook 'em Horns]
SBC 350 | TH350 | LWB | Buddy Seats
Rich72C10 is offline   Reply With Quote
Old 03-31-2021, 07:53 AM   #37
Happy_dan
Senior Member
 
Happy_dan's Avatar
 
Join Date: Jul 2019
Location: New Boston, NH
Posts: 384
Re: Carb to Fuel Pump Hard Line [Leak at Fuel Pump]

Wonder what it is after the water pump! LOL. It's always the next thing on these old trucks, isn't it? I have a list!
Happy_dan is offline   Reply With Quote
Old 03-31-2021, 08:05 AM   #38
Rich72C10
Mr. Cheyenne
 
Rich72C10's Avatar
 
Join Date: Jun 2020
Location: Kyle, Texas
Posts: 797
Re: Carb to Fuel Pump Hard Line [Leak at Fuel Pump]

You got that right - next up is more or less refreshing the frontend along with tired rubber brake lines - I have like $500 worth of parts in my RockAuto cart (includes water pump to have on hand)! But what I hate is re-replacing parts - hopefully the fuel pump is the last of that from last summer's repairs.

Though it is nice to be in preventive maintenance / peace of mind repairs. I already have a 12 bolt rear end Flo-Pro gasket as the cover is weeping around the bolts. That is when I also noticed the rear center brake line didn't look all that hot. None of these I am looking forward doing and I am serious thinking of having it done for me.
__________________
Richard

'72 Chevy C10 Cheyenne Bronze on White [Hook 'em Horns]
SBC 350 | TH350 | LWB | Buddy Seats
Rich72C10 is offline   Reply With Quote
Reply

Bookmarks

Tags
copper, flange leak, fuel line, nicopp, seepage

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:26 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Copyright 1997-2020 67-72chevytrucks.com