Trap door mod with a twist
02-04-2014, 06:05 PM
#1
Trap door mod with a twist Sanity check: I need to replace my fuel tank pressure sensor and vent solenoid, as well as pull off the lines from the charcoal canister and clear them. Being that they're right behind the fuel pump, I don't see why I can't just make a larger-than-normal trap door and pull them right out. Anyone see any reason why this wouldn't work?
Diagram of parts (the tank is facing the opposite way as it is in the in-car picture):
Based on this picture of a trap door mod from another thread, it looks like I just need to cut another few inches until I'm right up against the wall of the trunk to get to the canister. Yes???
Diagram of parts (the tank is facing the opposite way as it is in the in-car picture):
Based on this picture of a trap door mod from another thread, it looks like I just need to cut another few inches until I'm right up against the wall of the trunk to get to the canister. Yes???
Last edited by fruitsalad; 02-04-2014 at 06:10 PM.
02-05-2014, 03:32 PM
#7
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Im going to say it....because someone always says it. When you do the trap door method you are messing with the structural integrity of your car...especially if you cut a very large section out of it.
That being said, I did the trap door mod myself on an 01 Z28 and walked away from that job happy because I didnt have to cut my exhaust and remove half of my suspension to change a fuel pump. I wish GM had this trap door installed from the factory
That being said, I did the trap door mod myself on an 01 Z28 and walked away from that job happy because I didnt have to cut my exhaust and remove half of my suspension to change a fuel pump. I wish GM had this trap door installed from the factory
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02-05-2014, 03:46 PM
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Also, be careful when cutting around the charcoal canister area. The canister is pretty much right against the metal and you will cut into it if you cut too deep. I used a metal cut off wheel on a grinder and cut a a depth just enough to cut through the sheet metal and I still grazed the canister a little bit.
02-05-2014, 04:11 PM
#9
Im going to say it....because someone always says it. When you do the trap door method you are messing with the structural integrity of your car...especially if you cut a very large section out of it.
That being said, I did the trap door mod myself on an 01 Z28 and walked away from that job happy because I didnt have to cut my exhaust and remove half of my suspension to change a fuel pump. I wish GM had this trap door installed from the factory
That being said, I did the trap door mod myself on an 01 Z28 and walked away from that job happy because I didnt have to cut my exhaust and remove half of my suspension to change a fuel pump. I wish GM had this trap door installed from the factory
Also, be careful when cutting around the charcoal canister area. The canister is pretty much right against the metal and you will cut into it if you cut too deep. I used a metal cut off wheel on a grinder and cut a a depth just enough to cut through the sheet metal and I still grazed the canister a little bit.
When you grazed it, was it just cosmetic damage, or did it puncture?
02-05-2014, 04:29 PM
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It was just on the surface and was cosmetic luckily...the plastic is relatively thick.
When using the cut off wheel just pay close attention to your depth and only cut at a depth deep enough to cut the metal without the wheel protruding on the other side of the metal.
When using the cut off wheel just pay close attention to your depth and only cut at a depth deep enough to cut the metal without the wheel protruding on the other side of the metal.
02-06-2014, 01:53 AM
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Just look for a cutting wheel for metal...1/16" thick with a 5/8 hub hole for a grinder. The metal you are cutting into is ferrous so ideally you want to find a cut off wheel that cuts ferrous metals. Not trying to turn this into a science project lol.
Lowes or Home Depot will have what you need.
Lowes or Home Depot will have what you need.
... the wheel it came with is supposedly for metal but it's not doing a damn thing except polishing away my cut lines. 
02-08-2014, 12:31 AM
#19
If it needs to be moved, please by all means do so. Maybe to Fueling???Anyway, I'm stumped. While trying to remove & replace the tank pressure sensor, it broke off in the bung. The little stem and rubber grommet is stuck in there. How am I supposed to get this little ****** out?
02-08-2014, 12:40 AM
#20
If it needs to be moved, please by all means do so. Maybe to Fueling???Anyway, I'm stumped. While trying to remove & replace the tank pressure sensor, it broke off in the bung. The little stem and rubber grommet is stuck in there. How am I supposed to get this little ****** out?
Fish it out after you remove the sending unit, or leave it in it won't hurt floating in there.. It'll never get through the filter to hurt anything