clunking in gas tank

82 GT · 05-28-2002, 10:06 PM

I have recently noticed, on my 88, that when my fuel is less that half and I go around corners(left or right) I hear this clunking coming from the gas tank but if the tank is more than half or full then it doesn't do it. It just started doing this.
What is that?

65efi · 05-28-2002, 10:14 PM

My only guess is that the strainer came off the end of the pump and is floating on top the gas. When your tank is mostly full, it may be bobing around in that smaller part of the tank and not making as much noise.

Other than that, it may just be fuel sloshing around.

82 GT · 05-29-2002, 02:11 PM

Will I be able to fix it when the day comes that I need to replace the fuel pump?

LXH89 · 05-29-2002, 02:39 PM

There's a fuel baffle that the pump sits in. This metal baffle can come loose. It's only held in my two tack welds which can break quite easily. I ended up repairing mine with jb weld. I drained the tank and allow it to dry then with a stick, I maneuvered the jb weld inside the tank over the previous tack welds. I did this repair a year ago and it's all still holding...

Tony

05-28-2002, 10:06 PM	#1
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	clunking in gas tank I have recently noticed, on my 88, that when my fuel is less that half and I go around corners(left or right) I hear this clunking coming from the gas tank but if the tank is more than half or full then it doesn't do it. It just started doing this. What is that? __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

05-29-2002, 02:11 PM	#3
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	Will I be able to fix it when the day comes that I need to replace the fuel pump? __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

05-29-2002, 02:39 PM	#4
LXH89 Registered Member Join Date: May 2000 Location: Mt. Vernon, IL USA Posts: 12	There's a fuel baffle that the pump sits in. This metal baffle can come loose. It's only held in my two tack welds which can break quite easily. I ended up repairing mine with jb weld. I drained the tank and allow it to dry then with a stick, I maneuvered the jb weld inside the tank over the previous tack welds. I did this repair a year ago and it's all still holding... Tony __________________ Tony '89 Mustang LX 5.0L '99 Mustang Coupe

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05-28-2002, 10:14 PM	#2
65efi Registered Member Join Date: May 2002 Location: Portland, OR Posts: 37	My only guess is that the strainer came off the end of the pump and is floating on top the gas. When your tank is mostly full, it may be bobing around in that smaller part of the tank and not making as much noise. Other than that, it may just be fuel sloshing around.