Passat (B5) :: Gas Tank Overflow At Fill-up / Venting System?
Jan 2, 2008
When filling the gas tank, the pump shuts-off (as it should) unless the tank filled very-very slowly. It has overflowed/spilled before the pump even shut-off in some cases.
CEL is not on. DTC 16826 stored: "EVAP Emission Contrl.Sys (small leak) Leak Detected". I just got a VAG-COM cable but haven't got the software going
yet.
Bentley has some diagrams for the fuel vapor recovery system but that's about it. Seems like there's something with the fuel vapor recovery / venting system going on. How to further diagnose?
'01 Passat 1.8T ....
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I have a '88 F250 with a couple of dual tank issues, first of all if I'm running on the rear tank the fuel returns in the front tank.... not an isssue if trhe front tank is empty, but if both tanks are full the front tank will overflow. If the front tank is empty I run on the back tank until I'm out of gas and switch to the front and I"ll have about a half a tank in the front tank.
Second issue, running the front tank the fuel gauge stays on full until I have about half a tank, then it works OK. If I'm running the back tank it stays on full, even after the tank runs out of gas??
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I just changed my fuel tank and now when I try to fill it up it keeps blowing back it never did this before.
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My 1992 Nissan Primera 2.0 slx is overheating, probably on its last legs. First time this happened the radiator overflow tank seemed low so I topped it up with glycerol and added some leak plugger to the radiator for good measure. The car drove just fine for 20-30km then it happened again. At the same time, and I don't know if this is relevant, the windscreen defroster, which should bleed warm engine air, now only gives cold.
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Having a problem with the 2008 Sonata GLS. When filling gas tank, pump nozzle clicks off, but gas flow continues, creating a significant spillage.
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Is it normal for a small amount of antifreeze to leak out of the small hole on top of my Jaz overflow tank? This is on a 73 Chevy small block.
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I was wondering if I can replace my overflow tube for my gas tank without replacing the whole gas tank. I know I will have to drop the tank and get new straps to install it, but would I need a completely new tank or can I buy an overflow tube separately?
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1998 Mitsubishi Eclipse. 2.0L 5-speed. 195,000. When I complete my 33 mile trip home and shut off engine, I can hear air bubbling into the overflow tank from radiator. Temp gauge shows normal. Just had new water pump, thermostat, radiator flush and refill and new 16 lb radiator cap installed. Overflow tank fills up to near top (not running over) and when engine cools, the tank is back down to half way. I've checked water level in radiator when cool and it is full. Question: Is this normal? Don't think I've ever noticed or heard the bubbling sound before. The engine runs great and smoothly.
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Just finished a timing belt job on my 93 celica 5sfe. Filled the coolant up and burped engine. All seems to be well. My question is related to the coolant overflow tank. The cap has a hose attached on one end coming from the radiator and another coming out the other side that is short and L shaped. The L shaped hose isn't attached to anything and is open allowing air to either vent out or vent in to the overflow tank. There isn't any place nearby where the hose might attach to. Is this hose supposed to be "unattached" as it is now or should it be closed to create vacuum for the overflow tank to allow coolant back in to the radiator?
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Aside from other issues I am having with my prius, this was one lurking. I originally thought the prius was "using" the coolant insufficiently. Anyhow, I bought this prius from a private dealer....(know how that goes)......
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OK, my '01 GTI VR6 has been giving me overheating problems - I've had to replace the crack pipe, and I've been having problems with the plastic fittings (coolant lines around throttle, heater core) all breaking. Turns out the electric fans were bad, I replaced them yesterday. I did check them, neither one was coming on with the AC on, and with 12V jumpered directly to them, still no go, so it wasn't the fan controller.
I was looking forward driving my car without overheating, but that doesn't seem to be in the cards. Looks like the fans weren't the only thing wrong. The sympton I see is that the coolant overflows the coolant overflow tank, but the temp gauge, while it comes up to temp (190 degrees) it doesn't go beyond that - but I'm having coolant boiling out of the overflow tank?!
I really don't want to say out loud - but maybe a bad head gasket? I've heard there's something that's like litmus paper you can use to see if exhaust gasses are blowing into your coolant - where can I get it?
What may be wrong? Almost anything would be better than a bad head gasket! While I've been having these problems, I've not seen the temp gauge ever go beyond the center 190 degrees, what's happened is that while driving the low coolant warning will come on, I pull over, and coolant is bubbling and overflowing the tank.
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1996 F-150 5.0... So I bought this truck a couple months ago for a really good price and its my regular vehicle that I use daily. While driving I switched tanks from the front to rear and when i reached my destination i noticed that fuel spilled from the cap, I opened the cap and fuel overflowed. I've read in forums saying that its the Fuel Pressure Regulator or the Fuel Tank Selector Valve . It still drives and runs fine, but I would like to know which part its specifically causing the problem?
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My overflow tank seems to be going empty slowly. The last time I filled it was in March and I filled it to the Full line. Now, the overflow is almost empty. I did 425 KM last night almost non-stop and the level stayed the same since that night and today. So, I am not burning any thru the gaskets. Exhaust is not white neither.
I did see one suspect thought. I have this really small rad at the bottom of the bumper and it seems a little wet around the tubes that enter it. Could it be that? I have no spots on the driveway or road when I park. Specs of my truck:
190 000 KM.
Oil changed on Saturday.
Runs well, no loss of power.
Temps are good.
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I got a 64 F100 with a 292 that I am thinking of installing a coolant overflow tank on to aliviate having to fill the radiator frequently.
The question being............Is it a sealed system or do I need to provide an air bleed to adjust for the presure change within the cylinder I intend to use?
I realise that thermal syphoning will return the coolant to the radiator but am unsure as to weather or not I need to allow the airspace to remain at atmospheric pressure.
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2001 Jeep Cherokee sport ... Just bought this Jeep with 145K miles. Had radiator and all hoses replaced. The overflow tank is boiling over but the engine is not overheating. Safe to drive? What should I be checking for?
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While I was looking at my coolant level in the overflow tank yesterday I noticed pinkish coolant residue on the overflow tank cap and then looked at the radiator cap and it was covered in the same pinkish coolant residue.
2006 Cam LE 4 Cylinder, 52,000. Already done 2 coolant drain and fills--the Head bolt issue scares me.....
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I have owned my 2005 v10 ex since 60000 miles. Have had many dependable family road trips and love my truck.
Recently it has started puking coolant and the overflow tank smells like exhaust. The oil cap has some coolant sludge on it. But there is no coolant mixed with the oil. Or oil in the coolant.
I am pretty certain these are the signs of failing head gaskets. The truck has 193000 miles on it now.
Want to keep it on course. But keep it reliable. So do I buy new engine or do I just replace head gaskets?
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So I have a 2005 Dodge Stratus. It must be a year old model because most of the parts and engine wise are of the 2006 model. Well earlier in Feb/March I had to get my timing belt and heads changed due to the bending. After that my car was working fine, but my coolant overflow tank kept losing coolant. Had that fixed with the repair shop as well. After that it seemed that my car was working well. Then it started to overheat, and I was informed that my lower radiator hose had a small leak. I had that fixed as well. This is when the constant overheating started.
I assumed that the air needed to be removed from the system. So I had it bleed, and then it seemed to work well, but that was not true seeing as my car continued to overheat of the cold air was on. The only thing that keeps it working is if I turn the heater on. That cools the system off. So now everyday I have to keep letting air out of the radiators, and run the heater if it gets too hot.
I just noticed today that my thermostat housing bolts have coolant on them whenever the engine gets to hot. Do you think it's not right enough, or my radiator cap may be bad?
Replacements:
Head gasket
Thermostat
Radiator hoses
I believe the cap of the radiator as well.
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I have a 97 F-150 and my Radiator fluid has been leaking very bad but hasn't been taking the fluid from overflow tank. Actually the new fluid that I put in the overflow has now turned a rusty color....
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I have a 2002 Ford Explorer and I am still trying to figure out why the coolant will overflow in the radiator reserve tank. I put in a new thermostat and a new cap to the overflow tank. When the tank is cold, sat over night, I put in new anti-freeze to the cold coolant line. Then I start up the explorer and let it run for a while. The temp gauge goes up, then drops a tad and cold air comes out of the vents.
After I rev up the engine, I see the coolant level starts to rise in the overflow tank, then it goes to the top and starts to leak out. This takes a while being the thermostat has not kicked in to suck the fluid in. Before this happens, the heater core lines are luke warm. After the tank overflows, the remaining gets sucked into the engine and I get nice warm heat. What causes this. I had the test done to see if the head gasket is bad. The test was negative.
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I have a 2000 expy with the 5.4 just turned over 200k. I bought the upper and lower radiator hoses awhile back and finally gotta chance to change them out. I noticed i got the wrong bottom hose so I only swapped out the top hose. I filled it back up with 1.5 gal of distilled water. After I drove it about 60 miles I checked the overflow tank and noticed copper colored flakes in it. Im assuming the previous owner put some stop leak in it but not sure Ive never had any problems as far as overheating or losing coolant. What else could it be? Im going to get the right bottom hose and do a flush. Can I use the bottom hose I have, its got the two extra hoses for the oil cooler? I was just going to connect the two hoses together but not sure if that will cause a problem.
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