How to Diagnose a Bad Fuel Pump 1996 Subaru Legacy 2.2L Pt.5 Final Install & Retest

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ความคิดเห็น • 13

  • @heyoldman2003
    @heyoldman2003 5 ปีที่แล้ว +1

    Yes... great video.. Thanks again for walking us through this ....I remember ...haha when all Fuel pumps were all external . 2 bolts and two fittings and away you go...I never understood putting the pump in the tank ,especially electric fuel pumps ...seems risky at best ... good job guys !!

    • @KNKRNR
      @KNKRNR  5 ปีที่แล้ว

      I thought the same too when I was a young tech, but its safe. Gasoline only burns in vapor form which is why its safe to run electric fuel pumps in a tank full of liquid gasoline. Liquid gasoline does not burn well if at all. Commercial Aircraft have been using electric fuel pumps since the late 50's, which is where some our automotive technology surprising does come from.
      /K&K

  • @ma6184
    @ma6184 ปีที่แล้ว

    I've been having a similar issue crank but no start, the same amount of fuel into the bottle I guess I'll be doing the fuel pump change thanks for the video

  • @metalbrown4338
    @metalbrown4338 7 ปีที่แล้ว +2

    Great video

  • @heyoldman2003
    @heyoldman2003 5 ปีที่แล้ว +1

    Hmmm after thinking about it it’s all about MPG right . The Mechanical fuel pump’s probably did draw a little bit a extra power by running off the Cam . Anyway thanks again 👍🏼

  • @pamelavance648
    @pamelavance648 2 ปีที่แล้ว +1

    Appreciate this video so much
    I don't believe I'll try this on my own lol
    You guys are pretty efficient while doing the video....how much labor hours is appropriate if I get this done at shop or dealership and how do I tell if it's the pump
    I get great gas mileage and when starting the car it intermittently randomly car turns over and attempts to start but struggles
    To start and almost feels like a kickback of sorts...I realize this is an older video but I'm sure hoping to hear from you oh and yesterday is the first time I couldn't get passed the struggle start...dang
    And ....thank you I was wondering where the pump was located..now who ever decided that...$#@!

    • @KNKRNR
      @KNKRNR  2 ปีที่แล้ว

      Depending on year we will test fuel pressure by undoing the fuel filer outlet and turn the key to "ON" and see if the fuel pump primes. If the pump is bad no fuel will pass though the fuel filter located in the engine compartment. Most Subaru fuel pumps are located below the rear seat so you can pull that seat out and see if you can hear the pump prime with the key on. The pump will only prime for 5 seconds before it shut off unless the engine is started. The fuel tanks are hard to remove so Subaru installed a hatch cover for easy removal and instillation of a new fuel pump. Most shops will charge around $300.00-$400 for diagnosis, parts & labor.
      /K&K

    • @pamelavance648
      @pamelavance648 2 ปีที่แล้ว

      @@KNKRNR thank you 😊
      I've got pump and strainer having trouble getting fuel pump tank oval shaped gasket..do you think it's reusable after almost 28 years 192 thousand miles and never been opened ( time and temperature warn) ???
      Lol used glass bottle undid fuel line and primed and. ... nothing...shoot
      Nothing...and fun begins uhm...

    • @KNKRNR
      @KNKRNR  2 ปีที่แล้ว

      @@pamelavance648 If there are no visible cracks in the gasket it is safe to reuse it. We just give the fuel tank hat just a little bit of extra bit of torque on the bolts. If there are cracks in that gasket you can get RTV that that is fuel resistant, just use enough to seal any cracks present on that hat gasket. They don't make that gasket anymore so if we had to source one we use a junk yard vehicle. So far we have reused that gasket with no issues, don't top the gas tank off so fuel isn't sitting at the top. Leave a little room at the top during each refueling, its recommended to fill tank to 90% anyway for emission purposes. Link below is for the fuel resistant RTV.
      www.autozone.com/sealants-glues-adhesives-and-tape/sealant/p/permatex-permashield-orange-fuel-resistant-gasket-sealant-2-oz/166684_0_0?cmpid=LIA:US:EN:AD:NL:1000000:GEN:10574827360&gclid=CjwKCAiAtdGNBhAmEiwAWxGcUtUzQl0OWEN7avYiadXKlvmtvcY15qIzbWGlnjP95wp5p6NGUKwyZRoCg8QQAvD_BwE&gclsrc=aw.ds
      /K&K

    • @pamelavance648
      @pamelavance648 2 ปีที่แล้ว +1

      @@KNKRNR if no one's told you lately....you're very helpful. I'll watch the video for info my positive spin I was tired and didn't get gas the day before issue I think I have less than a half tank
      My gas mileage has been great only the random struggle start had battery and alternator checked in September recently a couple of surges...then surprise
      Love my subbyroo trying for the 30 yr or 300000 ( even if I have to push it ) let's hope not..2 yrs to go
      It's really been a fantastic car

  • @jesse19917
    @jesse19917 7 ปีที่แล้ว

    I still have the dieing out problem still after I changed the fuel pump and the fuel filter

    • @KNKRNR
      @KNKRNR  7 ปีที่แล้ว

      Bummer let's see if we can find out why. Will it start and run if you keep your foot on the pedal at about 10% to 20% not full throttle? If it runs with your foot lightly applied then you may be having a problem with the I.A.C.> Two common problems that can cause this stalling after pump replacement 1. Those I.A.C. (Idle Air Control Valves) goes bad and will cause stumbles and sudden die outs. 2. The throttle position sensor go bad as well. Unplug T.P.S and try to start in normal. If it does run okay but sluggish while driving (Doesn't Stall) then you have a problem with Throttle Position Sensor / or circuit. If it still starts and dies (NO change in problem) then T.P.S is fine for the start/run mode go to I.A.C. Sensor for next possible cause. Check for any vacuum leaks, weak battery cables, bad wiring or common ground wire breaks on the intake manifold. If you can run those test, let me know what happens, we can try to get it narrowed down for you and get your Suby running again.
      /K&K

    • @msmdlcdfvs
      @msmdlcdfvs 6 ปีที่แล้ว

      @@KNKRNR Would this apply also to my situation with my 1997 Subaru Legacy sedan L 2.2 liter? Car started and died down after about 5 seconds and did not want to start bu it engine would turn. I noticed the fuel pump was not turning on so I replaced it along with the strainer and fuel filter. Prime the new fuel pump a couple of times before starting the car and it worked fine. Ran the car for about 10-15 minutes and turned it off. 3 hours later drove off with no issues. Stop at a store and I was there for like 30 minutes. When I went to start the car it didn't start on the first turn. I turn the ignition again and it did start. Now it's doing that. Any idea of what is happening or did I do something wrong?