Holes in fuel filler neck

See photos... used a smoke machine to find 4 pin holes in the fuel filler neck. They are perfectly round and are all in a line (line beads on a bracelet), but not evenly spaced. Getting evap leak codes out the wazoo... are these holes supposed to be there?

 

Is that the steel filler neck or a rubber isolator? If the latter, the holes are no issue. If the former, than no, should not be there. System is sealed and the only place for vapor to escape with the engine off is the vent line.It looks like the filler neck, but hard to tell from a pic.

 

It's all steel. I know removing it and installing a new one is ideal, but if I just used a fuel friendly filler to "caulk" the pin holes, would that suffice?

 

JB Weld

 

+1

This is what I would use. However, it is critical to sand and degrease if you expext it to last long term. That said, if there are three visible holes, there could easilly be a fourth you are not seeing. Might be worth the time to pull it out and examine.

Do NOT just fill the hole. Need to leave a small blob on the surrounding area for adhesion.

 

Test the theory by applying a sealing tape over the holes and resetting the codes. If they stay cleared, likely the issue and you can strategize your permanent repair.

 

So, I cleaned the filler neck, and these holes look manufactured. Thoughts??

 

#6...do this. Have a dealer order one and compare.

 

Are those holes above the area where the cap seals? If so, they would NOT be the leak source.

 

Ok, so some dip-sh*t has already replaced the fuel filler neck before I bought it- with a model that is from an earlier year. Somewhat understandable because the one they were supposed to use is like 500 bucks and the one they used is like 100... but come on..... that being said the holes ARE supposed to be there- bloody hell. Anyway, thanks for the input guys.

 

So what's the fix for the evap codes?

 

Car shopping! Lol. Idk yet brother... I'll keep yall updated as I go... I really don't want to sink 500 bucks into an emissions code...

 

Do some car shopping, then come back and spend the $500 bucks if that's what it takes. It ain't any better out there. $500 won't cover 20 days worth of the month's typical car payment now. I'm assuming your 2011 is paid off. I just spent about $2k getting my 2000 all back to good running order with maintenance parts and new tires and exhaust. That's about 2.3 truck payments on a new one that I won't have to spend again for years. That's the magic of the "old Toyota". The reliability that made them famous is what makes them good cars and trucks to keep as long as I can keep the horrible driver's and deer away from me.

 

NEVER underestimate the stupidity of the previous owner. You wouldn't believe some of the hack errors I have found on my 07. Just yesterday I pulled the bed. The PO dropped the tank to replace the straps. He didn't get the vent line into the channel for it and it is fully crushed. Now I know why it is so hard to fill the gas tank. Amazing it hasn't exploded yet.

 

So,yesterday I pulled the bed to deal with rot on the bed floor. Noticed that my filler has four perfectly drilled holes in it, just like yours. Not sure I understand why they are there and what they lead to. If they are drilled all the way through, i do not understand how it doesn’t leak and fail the evap testing. Didn’t have the time to stick a flashlight in there to see if they are through drilled, but thought you would want to know. Fyi, i have no evap codes

 

Those holes are prob part of the burp system, may keep gas from burping back out of the filler neck when fueling...just a WAG on my end.