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Thread: Crazy Squeak In The Rear of The Car

  1. #1
    BadAsp427's Avatar
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    Crazy Squeak In The Rear of The Car

    Shortly after beginning the driving of my MK4 I developed a squeak in the rear. I had read about the different possibilities, Sway bars, Control Arms, etc... All of mine have been properly lubricated and actually re-lubricated with no luck in getting ride of the squeak. So after the Hot Rod Power tour and about 5600 miles now, I decided to really get under there and find this squeak. I actually found it by accident, while cleaning the underside of the car after many miles of rain driving. While cleaning the bottom of the fuel tank, the squeak showed up. Watch the video and the photos show how I have addressed the issue. I sure hope this help others that could have this same issue.

    Be sure to turn up your speakers for that awesome fingernail on the chalkboard sound...


    So once I discovered exactly what was causing the squeak I came up with the idea of putting a good thick rubber cushion between the tank straps and the rear edge of the tank flange where the metal to metal rubbing was causing the squeak. I found that my left over piece of 3/8" fuel line would make the perfect addition to my build. I cut two pieces of fuel line, each 1" long and then slit the both. The idea is that the slit will go over the edge of the fuel tank and provide insulation between the tank and strap. One added note, I also put the insulator as far around on the top of the tank edge as I could so that it is actually sandwiched between the black plastic cap that you put in the tank support tube. So now it is held very firmly in place by to points, the edge of the tank and the strap as well as the support tube. Tightened up the tank straps and there is now zero squeak. Problem Solved...

    In this photo you can see the inside of the tank strap and where it was rubbing against the edge of the tank causing the squeak.
    IMG_6331.jpg

    A close up shot of the modified fuel line / insulator
    IMG_6333v1.jpg

    How the insulator fits in place
    IMG_6334.JPG

    Job completed...
    IMG_6336.JPG

    Well almost completed... I did take this opportunity to take it all apart and put a coat of paint on the bolts to stop the rust. Just not before I took these photos.

    Mk4 20th Anniversary #8690 ( #8 of 20 ) Purchased 8/18/18----Build Started 8/19/18
    First Start 11-1-18
    ----First GoCart 11-7-18
    BluePrint Engines 347ci / TKO600 Save 10% @ BluePrint Engines until 8/1/2019
    Carb / Heater / Heated Seats / Cruise Control / Drop Trunk & Battery

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  2. #2
    Senior Member rich grsc's Avatar
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    I don't see the plastic spacer, insulator that's installed in the tank down leg?

  3. #3
    Senior Member edwardb's Avatar
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    Quote Originally Posted by rich grsc View Post
    I don't see the plastic spacer, insulator that's installed in the tank down leg?
    I noticed the same thing.
    Build 1: Mk3 Roadster #5125. Sold 11/08/2014.
    Build 2: Mk4 Roadster #7750. Sold 04/10/2017. #7750 Build Thread
    Build 3: Mk4 Roadster 20th Anniversary #8674. 03 of 20. 2015 crate Coyote, 2015 IRS. Legal 04/18/2017. #8674 Build Thread
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  4. #4
    Well Used Member boat737's Avatar
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    Quote Originally Posted by rich grsc View Post
    I don't see the plastic spacer, insulator that's installed in the tank down leg?
    Excuse the question... What is a "Tank down leg"? Thanks Rich.
    If Brute Force doesn't work, you're not using enough of it.
    Basic Stuff: MK4 Complete Kit #8439, Wilwood's, 17" Halibrands. Extra Stuff: Stainless brake and fuel lines, Breeze cooling, Battery mount, SS Roll Bar. Old Fart Stuff: Heater, Seat Heaters, Footbox Fresh Air, Stereo, Keyless ignition, Power Steering, Hyd Clutch.
    Young & Dumb Stuff: 427w Dart, TKO600, 3 link Moser M9/Ford 9", 3.5:1, Eaton TruTrac Posi. Graduation Thread

  5. #5
    Senior Member rich grsc's Avatar
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    Quote Originally Posted by boat737 View Post
    Excuse the question... What is a "Tank down leg"? Thanks Rich.
    That's what I call it, it's the 3/4" tube that drops down, and the fuel tank is pushed up to it when you tighten the tank straps. What would you call it? It really doesn't support the tank, but I guess you could call that, it aligns the tank to the correct position. They are supposed to have plastic caps inserted in them. No rattles or squeaks.

  6. #6
    BadAsp427's Avatar
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    Quote Originally Posted by rich grsc View Post
    I don't see the plastic spacer, insulator that's installed in the tank down leg?
    I agree it is kind of hard to see the two side by side... The plastic/vinyl cap is in there on both sides... Thanks for looking out...

    IMG_6336v2.jpg IMG_6336v1.jpg

    Mk4 20th Anniversary #8690 ( #8 of 20 ) Purchased 8/18/18----Build Started 8/19/18
    First Start 11-1-18
    ----First GoCart 11-7-18
    BluePrint Engines 347ci / TKO600 Save 10% @ BluePrint Engines until 8/1/2019
    Carb / Heater / Heated Seats / Cruise Control / Drop Trunk & Battery

    Build Thread Click Here Gel Coat Driver 1/12/19 - Hit 1000 Miles 3-23-19 / 2200 miles 4-30-19. FaceBook Page - Bando 11 Racing

  7. #7
    Well Used Member boat737's Avatar
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    Quote Originally Posted by rich grsc View Post
    That's what I call it, it's the 3/4" tube that drops down, and the fuel tank is pushed up to it when you tighten the tank straps. What would you call it? It really doesn't support the tank, but I guess you could call that, it aligns the tank to the correct position. They are supposed to have plastic caps inserted in them. No rattles or squeaks.
    Ah.... Got it. Thanks. Makes sense now. I must of been reading to fast and thinking too slow. I hate it when that happens.
    If Brute Force doesn't work, you're not using enough of it.
    Basic Stuff: MK4 Complete Kit #8439, Wilwood's, 17" Halibrands. Extra Stuff: Stainless brake and fuel lines, Breeze cooling, Battery mount, SS Roll Bar. Old Fart Stuff: Heater, Seat Heaters, Footbox Fresh Air, Stereo, Keyless ignition, Power Steering, Hyd Clutch.
    Young & Dumb Stuff: 427w Dart, TKO600, 3 link Moser M9/Ford 9", 3.5:1, Eaton TruTrac Posi. Graduation Thread

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