Author Topic: Fuel pump  (Read 475 times)

dalekerr

  • Member
  • ***
  • Posts: 54
    • View Profile
Fuel pump
« on: October 02, 2019, 09:41:22 PM »
My clear glass fuel filter goes dry after setting for an hour or so? When I go to start the car after setting a few days it will start right away then die, it then takes a bit to get it restarted. It will start fine with no issues after warmed up.

Yesterday while taking a long trip (150 miles) it started cutting out like starving for fuel on the way back, when getting down on it a bit, after 3k RPM. Could this be a sign the fuel pump is getting weak. The pump is about 10-15 years old maybe.

Thanks in advance

Dale Kerr
Dale Kerr
1967 Y 2 350 M20 12 Bolt Vintage Air
03D

dalekerr

  • Member
  • ***
  • Posts: 54
    • View Profile
Re: Fuel pump
« Reply #1 on: October 02, 2019, 09:41:54 PM »
Mechanical pump
Dale Kerr
1967 Y 2 350 M20 12 Bolt Vintage Air
03D

HawkX66

  • Hero Member
  • *****
  • Posts: 730
    • View Profile
Re: Fuel pump
« Reply #2 on: October 03, 2019, 11:07:30 AM »
The fuel from the glass filter, which you should toss in the trash, has to be going somewhere. It won't just evaporate out of there in an hour. Look at where it's leaking and fix that for starters. Cutting out/starving for fuel could be a stuck float. These cars generally sit for a while and when they do the ethanol fuel wreaks havoc. Where/how is the filter mounted?
Dave
69 SS396 X66 L34 M21 BS
Z23 711 U17 Hugger Orange
Semper Fi! USMC 93-02

dalekerr

  • Member
  • ***
  • Posts: 54
    • View Profile
Re: Fuel pump
« Reply #3 on: October 03, 2019, 01:00:56 PM »
The filter is mounted in front of the block before carb the after pump.  Is'nt the fuel pump suppossed to have a check valve to keep the fuel in the line? Could this be weak or bad causing my issues?
Dale Kerr
1967 Y 2 350 M20 12 Bolt Vintage Air
03D

HawkX66

  • Hero Member
  • *****
  • Posts: 730
    • View Profile
Re: Fuel pump
« Reply #4 on: October 03, 2019, 01:08:57 PM »
The filter is mounted in front of the block before carb the after pump.  Is'nt the fuel pump suppossed to have a check valve to keep the fuel in the line? Could this be weak or bad causing my issues?
Anything is possible. If the bladder is ruptured the fuel could potentially leak down and go back to the tank or end up on the ground. Sounds kind of suspect to me though. That wouldn't explain the starving fuel unless you're thinking it doesn't provide enough pressure to fill the float bowls. Get a pressure gauge on it so you can rule it out or confirm that's what's happening. Should be ~6psi for a Holley if that's what you're running.
Seriously though, get rid of the glass fuel filter unless you want your car to become a circus attraction when the fire dept has to show up.
Dave
69 SS396 X66 L34 M21 BS
Z23 711 U17 Hugger Orange
Semper Fi! USMC 93-02

firstgenaddict

  • Hero Member
  • *****
  • Posts: 2093
    • View Profile
    • Groome Family Automobiles
Re: Fuel pump
« Reply #5 on: October 03, 2019, 02:47:55 PM »
Bladder can fail and then the fuel can go into the oil pan.
James
Collectin' Camaro's since "Only Rednecks drove them"
 
Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
https://plus.google.com/photos/112392262205377424364/albums?banner=pwa

Sauron327

  • Hero Member
  • *****
  • Posts: 1151
    • View Profile
Re: Fuel pump
« Reply #6 on: October 04, 2019, 12:42:18 PM »
Decades ago, my friend watched his 'Cuda  burn to the ground after the glass fuel filter failed.

Z282NV

  • Newbie
  • *
  • Posts: 13
    • View Profile
Re: Fuel pump
« Reply #7 on: October 04, 2019, 01:52:32 PM »
Decades ago, my friend watched his 'Cuda  burn to the ground after the glass fuel filter failed.

That is a sad story. I had one of those on my 69 Camaro and just by chance was working in the engine bay and bumped the fuel line. The glass fuel filter just fell apart in pieces. Got rid of it immediately and went with solid stainless steel tube lines from the mechanical pump up to the carb. Knock on wood.

69Z28-RS

  • Hero Member
  • *****
  • Posts: 5191
  • owner since 4-Apr-1976
    • View Profile
Re: Fuel pump
« Reply #8 on: October 04, 2019, 03:09:02 PM »
Are you guys saying the danger with the 'glass fuel filters' are with the glass breaking? or the gasket failing? or the metal housing coming apart??   I'm curious if we're thinking of the same part, since there's been a glass bowl filter on my '57 Chevy sedan since I purchased it in 1978.   I've replaced the filter and the gasket but never had/saw a problem in the glass bowl (glass is very thick and stress is low).   
Gary W / 09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe, '70 Mach I 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

Z282NV

  • Newbie
  • *
  • Posts: 13
    • View Profile
Re: Fuel pump
« Reply #9 on: October 04, 2019, 05:33:35 PM »
Are you guys saying the danger with the 'glass fuel filters' are with the glass breaking? or the gasket failing? or the metal housing coming apart??   I'm curious if we're thinking of the same part, since there's been a glass bowl filter on my '57 Chevy sedan since I purchased it in 1978.   I've replaced the filter and the gasket but never had/saw a problem in the glass bowl (glass is very thick and stress is low).

The problem that I encountered was with the metal housing coming apart. I think the brand was Mr.Gasket. It is quite possible the older versions are better than newer versions but it you have one I would keep an eye on it.

69Z28-RS

  • Hero Member
  • *****
  • Posts: 5191
  • owner since 4-Apr-1976
    • View Profile
Re: Fuel pump
« Reply #10 on: October 04, 2019, 08:29:44 PM »
I went out and looked at mine...   it's an AC brand, not sure if it was installed at the factory in 1957 or sometime after, but I like being able to see the fuel/filter... reminds me to replace the filter element periodically.
Gary W / 09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe, '70 Mach I 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

rich69rs

  • Hero Member
  • *****
  • Posts: 968
  • LF7/M35/Z22/Z87
    • View Profile
Re: Fuel pump
« Reply #11 on: October 06, 2019, 07:12:03 PM »
Are you guys saying the danger with the 'glass fuel filters' are with the glass breaking? or the gasket failing? or the metal housing coming apart??   I'm curious if we're thinking of the same part, since there's been a glass bowl filter on my '57 Chevy sedan since I purchased it in 1978.   I've replaced the filter and the gasket but never had/saw a problem in the glass bowl (glass is very thick and stress is low).   

Either that or failure of the rubber hose(s) connecting it to the carb and fuel line.  From the fuel pump to the carb should only be a hard line - no rubber or external fuel filter - use of a glass bowl filter and rubber hoses between the pump and carb is safety issue - a leak under pressure on top of the engine or exhaust manifold.......
Richard Thomas
1969 RS

z28z11

  • Hero Member
  • *****
  • Posts: 1403
    • View Profile
Re: Fuel pump
« Reply #12 on: October 07, 2019, 04:05:31 AM »
I put mine between the hard line end and the pump, so it's not under pressure, just vacuum. I had a friend roast his '64 one night by the flexible hose in that area leaking - pays to replace those periodically, especially with today's rotten ethanol.

Regards,
Steve
1968 Z28 M21/U17 BRG/W
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06

Stingr69

  • Hero Member
  • *****
  • Posts: 696
    • View Profile
Re: Fuel pump
« Reply #13 on: October 08, 2019, 01:46:15 PM »
I almost lost my car with a typical glass filter with the 2 metal end caps about 20 years ago.  The rubber seals in the metal end caps had dried out after the fuel left the filter from sitting for a while (11 months).  Started the car and the rubber was shrunken and hard so the end caps started to leak while the engine was running.  Saw it dripping on the garage floor before anything happened.  Never again!

Thank you God!

 

anything