QUOTE(last337 @ Jun 8 2013, 08:20 AM)
How do I go about unclogging the tank without removing it?
First do what the cap'n said and us a flashlight to look inside the tank. If it's rusty or there is anything that looks like sediment in the bottom just pull the tank.
Siphon out what ever gas you can if you can't get it out of the lines.
Jack the car up in the front or all around and place it securely on jack stands.
Remove the inspection belly pan under the rack. (four bolts)
Find the fuel lines up in there you'll see them.
Disconnect the rubber lines.
What ever gas is left should start to leak out and run down your arms into your arm pits. If you shave your pits it will burn like hell! I had a gurl tell me that once.
Go back up top. You already have the vapor tank removed from your inspection. Remove the center strap that is across the top of the tank.
After the strap is clear you can wiggle the tank out of the car. There are two rubber blocks, one on each side of the tank and a couple of felt pads that support the tank and keep it from rubbing on the body. Make note of their location. You will need to put these back as you re-install the tank.
Once the tank is out flip it over and remove the nuts that secure the lines to the tank. Order a new fuel sock, clean out both lines. I have seen these clogged to almost no flow.
If the tank is rusted you can use a battery charger to de-rust it. Check you tube. There is lots of info on how-to do it. I did it and it works nice.
Here's a couple photos of my tank.
Click to view attachmentClick to view attachmentOh, and don't reinstall the tank until you replace the plastic lines in the tunnel. We have lost too many 914's to fire from these old brittle plastic lines. Check the member vendor section for a source for stainless line kits.