Strange engine problem

Good,

first of all, that it is clear that I am not a mechanic, not even an amateur.

I go to this forum to ask you a problem, to see if someone can tell me what the hell happens to my car. I will try to be as clear as possible.

I have a Hyundai Accent Gls for 3 years (I already had 6 when I bought it). It has about 120,000 km and uses gasoline 95.

The problem is the following:

from time to time I jump the chivato of the engine intermittently, flashes for a time (like 1 minute), it goes out, after a while again flashes, it goes out ... and so on. When this happens I notice that when you step on the accelerator the car does not throw. If I stop at a traffic light, the engine is threatening to stop, the recruption needle lows almost zero and goes back to 800 or 900. I also notice a smell like exhaust gases. Note: The alternator and spark plugs are new.

And here comes the weirdo: it only happens when the tank fills and I walk about 80km. That is, the deposit full, at 80-100 km the problem appears, and from the fact that the gas level reaches 3/4 of the deposit (more or less) does not do it again. I realized this for a long time and although it seemed like a asshole I started to fill always half a deposit or a little more, but never butt, and from time to time I threw it up. Well, whenever he filled it halfway, he went like silk and every time he filled him to the top, the problem appeared (at least 4 times). I know it is weird and that it seems that it has neither feet nor head but I am not inventing anything. The problem is as I tell you.

Well nothing, I hope someone can give me some explanation ... as I will continue to fill the deposit halfway!

Greetings to all

In mechanics there are always strangely that are usually produced by bad executions bone mistakes, therefore, I think that the pond gas aspiration system is poorly connected. It could be a return hose by hose of the canister check on these sides. He then comments luck

Hello, I agree with what Huipi says but I advise you
to clear the canister filter that goes just behind the left rear wheel and change it to a new one.
It is very likely that it is full or with gasoline remains
if you cannot do it, take the car to the workshop to do it a professional. Tell me if you solved the problem
luck and a greeting

That is because you do not step on the car enough, I spliced ​​to see if I guess you drive by population or on the road you go slowly, the canister is filled with gas from the deposit and not being able to get the gas out because you do not meet the warm car requirement and more than 120 the non -calable valve and the failure is activated. Low rebolacion, there is the pump loose some gas and the car fiegets to stop. BACIAR SOLUTION LA CANISTER. How is it done: Faciloma heats the car and puts at least 20 kilometers fast I assure you that it stops doing strange things.

Well, the truth that you get, I don't usually force it. Mostly I use it in city and when I go on the highway, I never pass 130 (basically because from there it sounds and vibrates more than normal).

I have a couple of questions:

when do you say that at least 20 km quickly do you mean that it takes it more revolutionized than normal or that it goes to high speeds?

Another thing, this last week, although the pilot no longer turns on nor does it make me threatened to stand, I notice that when I step on it, it takes time to react. I explain myself. When the accelerator has been second and floor, the impulse of the acceleration takes like a couple of seconds. I tell you in case it serves as a track