Slow Fuel Fill Problem Diagnosis
O.k so just recently bought a 2000 Hyundai Accent the check engine light came on took it and had it tested they said it was the gas cap so I bought a new one.. and the light went off but then it came back on and took it again to have it tested they said it was the Fuel Vapor Leak Detection Pump... but the other day the car while driving the RPM's would completely go all the way down to 0 and I would have to pull over and the car would die.. after a few minutes I could crank it again and drive for a little while longer and it would do the same thing again.. I also have the problem with the slow fill where I can barely pump even 1/2 a gallon and it would cut off... Please any suggestions before paying 100.00 for the Leak detection pump? Any pictures of where everything is I need to check? I hope it is not the fuel pump.
Thanks.
Thanks.
You probably have 2 separate issues. The slow fill is caused by the tank not venting when you attempt to pump gas into the tank. Could be a kinked hose, or the carbon canister is letting carbon into the vent system clogging it. The problem of the engine dying, then it can be restarted later seems to be something over heating. It might be the fuel pump, it might also be something like the ignition module. I have seen both items fail on cars where they can be started later. A faulty connection to the car's computer, or a faulty (such as corrosion) ground to the computer, or the other 2 items I mentioned. Try looking at that. The charcoal cannister, and the leak detection pump is behind the left rear tire near the gasoline filler neck. The purge valve should be under the hood.
Add one more thing that can cause a problem filling the tank. Not much is mentioned about this item, but there is an air filter next to the charcoal canister. I tried blowing it out with the exhaust of a vacuum and a lot of dust came out, but it still didn't flow much air. Apparently, it is a dealer item. I could not find one online. I decided to look into it, with a reciprocating saw. I cut it open, and it has paper filters in it. The smallest one is the first one the air hits, so it clogs easily. I replaced it with some dacron fibre fill. I know that it stands up to dry cleaning fluid which is stronger than gasoline, but I tested it with gas, and it did not dissolve. I glued the housing back together, and tried putting gas in the tank. No problems. Recap: My 2002 Accent has had charcoal in the vent lines, and a clogged filter. BTW: it was a bit of a surprise to find that this car was built September 11, 2001.
I have a 2002 Elantra GT with 101k miles.
Same slow fill problem.
My arthritis prevents me from doing the repairs myself, but I could be of some help probably.
I'd rather pay an amateur who really knows what works than a pro who is guessing.
If you fixed your own and it worked ... are you in southern California? Are you up for the job?
Or .... as an alternative, can you recommend a shop or mobile unit who knows about and can fix this problem right?
Same slow fill problem.
My arthritis prevents me from doing the repairs myself, but I could be of some help probably.
I'd rather pay an amateur who really knows what works than a pro who is guessing.
If you fixed your own and it worked ... are you in southern California? Are you up for the job?
Or .... as an alternative, can you recommend a shop or mobile unit who knows about and can fix this problem right?
Good news everyone. Aftermarket parts are now available for the fuel vapor system!! The fuel vapor leak detector pump on my 2002 Hyundai Accent was diagnosed as defective by a mechanic, and he said that the part would be about $740 because it is a dealer item. I bought one made by Dorman (Part # 310601) from RockAuto.com for $72.89. Dorman also has the charcoal canister with a felt filter for $105. The factory one has that foam filter that dissolves in gasoline.
The killer for a 2009 carbon filter is I have never found out how to remove it. I think the gas straps have to be loosened and the tank dropped a bit to get the filter out of its strap above the gas tank. I also think the line to the gas tank from the filter has to be removed at the sensor switch on top of the tank, accessible via a removable plate behind the passenger side back seat. But to do this and I am working from memory, it needs the sending switch removed to relieve tank pressure (requires another tool). Otherwise the sending switch assembly can rocket off. I have been fortunate that the carbon filter has maintained its integrity.
So anyone have the definitive word on how to remove the carbon filter from above the tank in a 2009 Sonata?
So anyone have the definitive word on how to remove the carbon filter from above the tank in a 2009 Sonata?


