Author Topic: It never fails...  (Read 347 times)

Offline goodfellow

  • RestroLibrarian
  • Knows nut from bolt
  • *****
  • Join Date: Jun 2010
  • Posts: 13107
  • Location: Northern Virginia
It never fails...
« on: April 16, 2018, 11:54:31 AM »
.....come spring time (April/May timeframe) one of my daily drivers develops some sort of problem. I was driving home last night and the old Rodeo started to jerk and buck under acceleration. I've been here before with this problem and was pretty certain that the fuel pump I installed a few years ago was biting the dust. I pulled over and gave the underside of the fuel tank a few hard hits with the broadside of a hammer, and the problem went away until a few more miles passed. I limped home this way (pulling over, hitting the tank to jar the pump into action).

I'm done with cheap Chinese internal tank mounted pumps on this one. I'll leave the old pump in place and install an in-line pump that is easily replaceable if it occurs again. In fact I'll keep a spare in the toolbox that is pre-wired and easily substituted.



Offline fatfillup

  • numbnuts
  • Spins ratchet
  • *
  • Join Date: Jun 2010
  • Posts: 19173
  • Location: Maryland
Re: It never fails...
« Reply #1 on: April 16, 2018, 01:12:56 PM »
Ah, the joys of an aging fleet panicx

That scalloped box end is one of the few BB features that doesn't make Elroy puke

Offline john k

  • Super Hero
  • ******
  • Join Date: Sep 2011
  • Posts: 2096
Re: It never fails...
« Reply #2 on: April 16, 2018, 02:04:51 PM »
Did that to an old Buick I drove awhile back.   Only had to rap on the tank, while I reached up and twisted the key with the other hand.   If the hammer had a shorter handle, it wouldn't have happened. 

Offline bonneyman

  • Knows what a screwdriver is
  • ********
  • Join Date: Jun 2010
  • Posts: 6954
  • Location: Tucson, AZ
  • A workman is worthy of his wages
Re: It never fails...
« Reply #3 on: April 16, 2018, 07:28:10 PM »
I hate those in the tank fuel pumps with a passion! >:(

Offline Scout Driver

  • Global Moderator
  • Hunt and peck king
  • *****
  • Join Date: Dec 2010
  • Posts: 4328
  • Location: South Dakota
  • Scout. Anything less is just a car.
Re: It never fails...
« Reply #4 on: April 16, 2018, 08:06:31 PM »
We put a good Delphi pump in our '97 Chevy pickup.  In less than 2 months it failed.  Delphi was good enough to warranty the pump and labor.  The replacement has been fine for years now.

Scott

Offline brslk

  • Can use hammer
  • *********
  • Join Date: Apr 2011
  • Posts: 9735
  • Location: Edmonton, Alberta, Canada.
  • Lackey and general stooge.
Re: It never fails...
« Reply #5 on: April 17, 2018, 12:44:26 AM »
I wish they still had mechanical fuel pumps.  Pop the hood, two bolts, two hoses and it was out.
It also never fails that the in tank pump always stops working when the tank is full...
I'm just a guy in a garage with some tools...

Bruce.

Offline Barks

  • Full Member
  • ***
  • Join Date: Mar 2011
  • Posts: 163
Re: It never fails...
« Reply #6 on: April 17, 2018, 09:47:09 AM »
Just asking---how is it that an electric in-line fuel pump between the old pump and the engine can draw fuel "through" the old, and non-operating, pump?

Offline goodfellow

  • RestroLibrarian
  • Knows nut from bolt
  • *****
  • Join Date: Jun 2010
  • Posts: 13107
  • Location: Northern Virginia
Re: It never fails...
« Reply #7 on: April 17, 2018, 10:46:02 AM »
Just asking---how is it that an electric in-line fuel pump between the old pump and the engine can draw fuel "through" the old, and non-operating, pump?

Good question! For a high pressure pump (40-45 psi) like my Rodeo I don't know for sure if it will work. I have used this method for two other vehicles with low pressure (5-10 psi) carburetor based fuel systems. There is just an impeller that is in the way on the broken pump -- and the fuel flows past the impeller when being sucked up by the new pump.

Offline stokester

  • Sr. Member
  • ****
  • Join Date: Jan 2014
  • Posts: 260
  • Location: Yorktown, Virginia
  • Airhead Aficionado
    • Classic VW Radios
Re: It never fails...
« Reply #8 on: April 17, 2018, 02:50:12 PM »
Just asking---how is it that an electric in-line fuel pump between the old pump and the engine can draw fuel "through" the old, and non-operating, pump?

Good question! For a high pressure pump (40-45 psi) like my Rodeo I don't know for sure if it will work. I have used this method for two other vehicles with low pressure (5-10 psi) carburetor based fuel systems. There is just an impeller that is in the way on the broken pump -- and the fuel flows past the impeller when being sucked up by the new pump.
Yea I was wondering that myself. 

Also, does the Rodeo have a fuel pressure regulator?
_Nick
vwradios.com

Offline Muddy

  • Knows nut from bolt
  • ***********
  • Join Date: Apr 2011
  • Posts: 10949
  • Location: Rock, Pa
  • Wrenching To Keep The American Farmer Growing
Re: It never fails...
« Reply #9 on: April 17, 2018, 08:01:16 PM »
I know your pain, well with the aged daily anyway.


Hit a deer Saturday night with my Plymouth. Didn't bother with insurance, as it would be totaled. All it did was crinkle the hood and fender.

 There's barely a layer of paint on the car. But the damn thing just keeps running along. Gonna run it till the wheels fall off.


My "cherry" Plymouth is slowly turning sour.

Sent from the twisted mind of the Mudman.
"And on the 8th day, God looked down on his planned paradise and said, "I need a caretaker." So God made a farmer."

Offline fatfillup

  • numbnuts
  • Spins ratchet
  • *
  • Join Date: Jun 2010
  • Posts: 19173
  • Location: Maryland
Re: It never fails...
« Reply #10 on: April 18, 2018, 01:09:12 PM »
^^^^^^Hatchbacks rule 8)
That scalloped box end is one of the few BB features that doesn't make Elroy puke

Offline Lookin4_67GalaxieConv

  • ran when parked
  • Knows what a screwdriver is
  • ********
  • Join Date: Jun 2010
  • Posts: 5150
  • Location: Atlanta, GA
Re: It never fails...
« Reply #11 on: April 20, 2018, 08:31:09 AM »
I know your pain, well with the aged daily anyway.


Hit a deer Saturday night with my Plymouth. Didn't bother with insurance, as it would be totaled. All it did was crinkle the hood and fender.

 There's barely a layer of paint on the car. But the damn thing just keeps running along. Gonna run it till the wheels fall off.


My "cherry" Plymouth is slowly turning sour.

Sent from the twisted mind of the Mudman.

Oh we need to see a picture of that!  beerdude
This car is a pile of crap. Noisy, rattly, slow and underpowered and has a reputation for being unreliable. I want one.

We'll see you on the road like we saw the Nightrider!

We remember the Nightrider! And we know who you are, Bronze!

Offline goodfellow

  • RestroLibrarian
  • Knows nut from bolt
  • *****
  • Join Date: Jun 2010
  • Posts: 13107
  • Location: Northern Virginia
Re: It never fails...
« Reply #12 on: April 20, 2018, 05:50:29 PM »
Decided to take the pump assembly out and see what was up. Everything is crusty on these old rust buckets.
The old pump looked clean, but as I shone a light down into the tank I noticed that the bottom of the well where the pump sits was full of black crud. I decided to drain the tank and only then saw what looked like black sand in the pump well.



I cleaned it out and finally realized that the black gunk was the plastic cladding from the pump.



The pump body has this rubberized cladding and once I touched it it crumbled to pieces.



It may be that this crud became small enough to get past the pump filter screen and into the impeller housing. Anyway, I left the rubber cladding off of the new pump and installed it.



Works great and we'll see how long this one lasts -- hopefully a few more months.

I'll let the sealant for the pump assembly dry overnight and then give the thing a full tank to see if there are any leaks at the assembly seams.





« Last Edit: April 20, 2018, 08:20:46 PM by goodfellow »

Offline Muddy

  • Knows nut from bolt
  • ***********
  • Join Date: Apr 2011
  • Posts: 10949
  • Location: Rock, Pa
  • Wrenching To Keep The American Farmer Growing
Re: It never fails...
« Reply #13 on: April 20, 2018, 07:42:37 PM »
I know your pain, well with the aged daily anyway.


Hit a deer Saturday night with my Plymouth. Didn't bother with insurance, as it would be totaled. All it did was crinkle the hood and fender.

 There's barely a layer of paint on the car. But the damn thing just keeps running along. Gonna run it till the wheels fall off.


My "cherry" Plymouth is slowly turning sour.

Sent from the twisted mind of the Mudman.

Oh we need to see a picture of that!  beerdude
The Plymouth or the deer damage?

Sent from the twisted mind of the Mudman.

"And on the 8th day, God looked down on his planned paradise and said, "I need a caretaker." So God made a farmer."

Offline stokester

  • Sr. Member
  • ****
  • Join Date: Jan 2014
  • Posts: 260
  • Location: Yorktown, Virginia
  • Airhead Aficionado
    • Classic VW Radios
Re: It never fails...
« Reply #14 on: April 20, 2018, 08:10:23 PM »
No EVAP to deal with  ;)

I replaced the fuel pump in a Pontiac Vibe (Toyota Matrix) which did not come with a new O-ring gasket (required) so I was forced to use the old one... comeback, for an EVAP code which I found with a smoke machine leaking from the pump.  Fortunately these are accessible under the back seat.
_Nick
vwradios.com

The Garage Gazette

Re: It never fails...
« Reply #14 on: April 20, 2018, 08:10:23 PM »