General Maintenance & Repairs Leaks | Squeaks | Clunks | Rattles | Grinds

trap door or drop the fuel tank

Old 08-31-2014, 08:02 AM
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Default trap door or drop the fuel tank

What have most of y'all done ?
Old 08-31-2014, 08:31 AM
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Trap door for me. Much easier
Old 08-31-2014, 08:48 AM
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https://ls1tech.com/forums/general-m...p-install.html

https://ls1tech.com/forums/general-m...k-removal.html
Old 08-31-2014, 09:12 AM
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To do it right you should drop the tank. With out a lift that is not the easiest think to do, that is why many people do the trap door.

The biggest problems with doing a trap door are,
1. not cutting to deep and damaging the tank, lines or wires
2. getting dirt and debris into the tank or seal area
3. coming up with a way of closing the hatch so it seals

If you can manage all these then you are in good shape.

One of the advantages of dropping the tank is being able to clean it out. It's amazing how much crap gets into the tank!

Good luck
Craig
Old 08-31-2014, 10:53 AM
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I've done it both ways, and would never ever drop the tank again. The trap door is the way to go.
Old 08-31-2014, 12:08 PM
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I dropped the tank the first time, but the second time I did the trap door. I will never drop another tank on these cars again.
Old 08-31-2014, 12:38 PM
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I did the trap door also. You must be very careful you don't cut any wires. I was careful and still cut one. But nothing a little solder won't take care of. To cover it back up i used some sheet metal and screws to hold it and then used foil tape to seal the edges. I have a mig welder but Something told me i better not weld right on top of the gas tank.

I'm glad i did the trap door method b/c if i ever need to get back in there it's only a few screws away.
Old 08-31-2014, 06:00 PM
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The trap door is the way to go.It is the easy way.
Old 08-31-2014, 09:28 PM
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Did y'all ever smell gas fumes ? With the trap door . I know people use gasket sealant
Old 08-31-2014, 10:34 PM
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Originally Posted by Camaraderie
Did y'all ever smell gas fumes ? With the trap door . I know people use gasket sealant
None here, and I had the trap door off for about 6 months.
Old 08-31-2014, 11:37 PM
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Definitely the trap door IMO, especially if you have the '98 and older metal tank (which seems to be harder to wiggle out than the plastic one - I've never tried to remove the plastic tank but I've heard it's easier).

Originally Posted by Camaraderie
Did y'all ever smell gas fumes ? With the trap door . I know people use gasket sealant
The only way you would ever smell gas fumes from this is if you didn't get the pump sealed to the tank properly, in which case you'd also be getting an EVAP code. These cars have a fully sealed and highly monitored fuel vapor system, so if there is a leak anywhere (even pin hole) you'd get a code. If everything is installed and working correctly, there are no fumes outside the tank in the first place, and thus nothing to leak into the interior - trap door or not.

Having said that, I would still install a trap door simply to prevent dust/dirt, etc., from working it's way up with air movement, or to prevent any possible exhaust fumes from working their way up - especially if you have dumps under the axle. The foil/insulated repair tape is one nice way to seal the door, another would be rope caulk (more easily applied/removed than silicone). Of course, silicone/gasket sealant would work too.
Old 09-01-2014, 11:55 PM
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drop the tank. I have done it a couple of cars. Straight forward and easy
Old 09-02-2014, 03:51 PM
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Originally Posted by ss performance
One of the advantages of dropping the tank is being able to clean it out. It's amazing how much crap gets into the tank!
^^^THIS is one of the reasons I decided to drop the tank over hacking up the hatch floor.
Old 09-02-2014, 03:55 PM
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Trap door without a doubt. Dropping the tank is a huge pain in the azz. There is a filter on the pump and a fuel filter in the fuel line, no reason to clean out the tank at all.
Old 09-15-2014, 01:13 AM
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It took me about 45 mins to drop the tank. Once you unbolt the PH Bar, LCAs, and shocks, the axle falls right out of the way.


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