Joined Mar 31, 2021
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40 Posts
Should there be pressure in fuel tank? when im next to the car i hear hissing sound and when i open fuel cap it releases pressure.
Joined Mar 31, 2021
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40 Posts
Should there be pressure in fuel tank? when im next to the car i hear hissing sound and when i open fuel cap it releases pressure.
Found out that if i loosen the fuel cap all idle issues dissapear and when i tighten it idle starts to act up again.
Joined Jun 30, 2012
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2,201 Posts
Check the N80 valve, it's control wiring and the vacuum lines attached to it.
Joined Mar 31, 2021
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40 Posts
Check the N80 valve, it's control wiring and the vacuum lines attached to it.
valve itself seems to be working atleast it makes sound when it the car is running, gotta check vacuum lines etc.
Joined Mar 31, 2021
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40 Posts
okay i changed the n80 valve and it seems to working pretty much perfectly now, no pressure in fuel tank.I went to take emissions test but my co% is still high on rpm (0,5) any ideas what could cause that?
Joined Jun 30, 2012
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2,201 Posts
since you have already replaced a bunch of the standard parts I'd check the vacuum lines and maybe clean the MAF. How old is the gas?
Joined Mar 31, 2021
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40 Posts
since you have already replaced a bunch of the standard parts I'd check the vacuum lines and maybe clean the MAF. How old is the gas?
maf is already cleaned and seems to be working correctly (checked with vcds). i have tried to check vacuum lines but i cant seem to find any hoses thats leaking, is there a good way to check for vacuum leaks? Gas is fresh.
Joined Sep 18, 2014
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878 Posts
You can use break cleaner or carb cleaner and spray around the vacuum hoses. If you hear a surge in the idle it’s likely a leak
Joined Mar 31, 2021
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40 Posts
You can use break cleaner or carb cleaner and spray around the vacuum hoses. If you hear a surge in the idle it’s likely a leak
i tried using brake cleaner on the hoses but didnt find any leaks.
Joined May 9, 2002
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28,603 Posts
Brake cleaner does not always work, you need flammable brake cleaner and even then, it evaporates very quickly.
Joined Mar 31, 2021
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40 Posts
Brake cleaner does not always work, you need flammable brake cleaner and even then, it evaporates very quickly.
any ideas what should i use?
Joined May 9, 2002
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28,603 Posts
Flammable brake cleaner or throttle body cleaner or even starter fluid.
Joined Mar 31, 2021
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40 Posts
I passed emissions test with 15litres of ethanol
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