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Air in petrol tank

Tiny
MRZAZA
  • MEMBER
  • 1996 OPEL VITA
  • 4.1L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
When I try to fill my car with petrol the pump keeps shut off as if it is full.
Also, fuel consumption is very poor, it is about 180 km per gallon.
Thank you in advance.
Monday, September 18th, 2017 AT 5:25 AM

21 Replies

Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
There may be water in the fuel tank. Had one a few years ago when it said half full it was empty and would not run. Had to take the gas out and refill it. They have a bottle of Seafoam and it works by dissipating the water and cleaning anything residue that the ethanol leaves and cleans the system.
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Monday, September 18th, 2017 AT 11:55 AM
Tiny
MRZAZA
  • MEMBER
  • 27 POSTS
I do not think the reason is water in the tank because the car starts fine and the fuel gauge also works fine.
Thank you for your reply.
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Tuesday, September 19th, 2017 AT 1:36 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
The fuel tank vent system is probably blocked, causing the pressure build up that shuts off the filler. Check for codes and a blocked emissions filter, start here.
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Tuesday, September 19th, 2017 AT 4:45 AM
Tiny
MRZAZA
  • MEMBER
  • 27 POSTS
Okay what about the fuel consumption? I think it should be better than 180 km per gallon?
The car is 1.4 16 v model vita 96.
Thank you.
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Tuesday, September 19th, 2017 AT 4:52 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Tune, compression test, check O2 sensors are working electrically as if faulty they go full rich, start here.
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Tuesday, September 19th, 2017 AT 5:11 AM
Tiny
MRZAZA
  • MEMBER
  • 27 POSTS
Thank you man I will try these solutions.
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Tuesday, September 19th, 2017 AT 5:42 AM
Tiny
MRZAZA
  • MEMBER
  • 27 POSTS
And something else I forgot to mention that the ABS light is on. S it related to any of problems above?
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Tuesday, September 19th, 2017 AT 6:33 AM
Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
Check out the gas situation also. When you fill it up does the fuel gauge go all the way full. I had a car that when it got down to less than 3/4 it would run out of fuel. Found that it was half full of water. Do not know if that is the case for you. If you can run the car until about empty there should be no problem. If that is not the problem check what mphautos suggested.
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Tuesday, September 19th, 2017 AT 6:59 AM
Tiny
MRZAZA
  • MEMBER
  • 27 POSTS
Yes the car can run until about empty
thank you
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Wednesday, September 20th, 2017 AT 12:20 AM
Tiny
MRZAZA
  • MEMBER
  • 27 POSTS
The big problem is the mechanics in my country is mostly the (guessing type)
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Wednesday, September 20th, 2017 AT 12:22 AM
Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
With the fuel not going in try to put it in slow and see what happens. Years ago ran into a problem like that and the vent was clogged.
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Wednesday, September 20th, 2017 AT 12:09 PM
Tiny
MRZAZA
  • MEMBER
  • 27 POSTS
The vent was clogged.
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Sunday, September 24th, 2017 AT 4:31 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
ABS will probably be a faulty heel speed sensor check for fault codes
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Sunday, September 24th, 2017 AT 5:48 AM
Tiny
MRZAZA
  • MEMBER
  • 27 POSTS
The air in the tank problem is solved. But the fuel consumption is not it do about 180 km per 20 Liters.
The computer check gives no fault except front ABS sensors.
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Tuesday, September 26th, 2017 AT 2:38 AM
Tiny
MRZAZA
  • MEMBER
  • 27 POSTS
Can I replace O2 sensors with Nissan one
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Tuesday, October 10th, 2017 AT 6:51 AM
Tiny
MHPAUTOS
  • MECHANIC
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I doubt that you can, the plugs may be wrong and the type of sensor may also be different and the attachment thread, I would strongly suggest to try and source correct sensors local or on line.
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Tuesday, October 10th, 2017 AT 2:53 PM
Tiny
MRZAZA
  • MEMBER
  • 27 POSTS
Do recommend to change the engine to 1.6?
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Tuesday, October 31st, 2017 AT 12:36 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
That could be an expensive option, probably need a new PCM and you may have to up date radiator and exhaust as the engine pipe may be different, loom may be different as well. It is never a simple task to do a re engine with a type other than what was fitted at the factory to your own model.
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Tuesday, October 31st, 2017 AT 3:57 AM
Tiny
MRZAZA
  • MEMBER
  • 27 POSTS
A good used engine will coast me around 220 US$ and its from the same car model except its 1.6
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Wednesday, November 1st, 2017 AT 12:41 AM
Tiny
MHPAUTOS
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Yes, but pcm will be different and you will have to check all other items to be sure.
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Wednesday, November 1st, 2017 AT 1:47 AM

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