filler cap,if taken off it cuts out?is this good or bad?????
01-03-2005, 09:19 PM
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filler cap,if taken off it cuts out?is this good or bad?????
can some tell me y people check filler cap....i mean take it off whilst engine is running??
ive looked at 1 2nite and it cut out when i took cap off ....wot does this mean?????????
ive looked at 1 2nite and it cut out when i took cap off ....wot does this mean?????????
01-03-2005, 09:35 PM
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Why the fook you taking the the petrol cap off? 
I assume you mean oil filler I honestly cant remeber if it should or shouldnt cut out when removed, I think it could mean the breathers blocked.
I assume you mean oil filler
I honestly cant remeber if it should or shouldnt cut out when removed, I think it could mean the breathers blocked.
oil filler cap!!!
01-03-2005, 10:40 PM
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I believe it should cut out due to when you remove the filler cap there is a massive air leak. If you have an aftermarket breather system that vents to atmo then it wont cut out..........at least thats what mine does 
01-03-2005, 10:42 PM
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If the standard breathers are working correctly it SHOULD cut out. If they are blocked then it won't cut out or will run lumpy. The reason is the fuel metering unit draws on the breathers and it meters this air. When you take the cap of, you introduce unmetered air into the induction system which also drops the amount of vacuum and causes it to run too lean for it to stay running.
A poorl sealed dipstick or gaskets on the engine can also effect the way the engine runs.
My car has had the breathers removed from the induction system completely and have blocked the port of in the the meter unit and the car set up accordingly. The breathers than go to a breather oil seperator and then to atmoshpere (a catch tank could also be used but it still ultimately breathes to atmosphere).
A poorl sealed dipstick or gaskets on the engine can also effect the way the engine runs.
My car has had the breathers removed from the induction system completely and have blocked the port of in the the meter unit and the car set up accordingly. The breathers than go to a breather oil seperator and then to atmoshpere (a catch tank could also be used but it still ultimately breathes to atmosphere).
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02-03-2005, 08:40 AM
#11
Originally Posted by DazC
If the standard breathers are working correctly it SHOULD cut out. If they are blocked then it won't cut out or will run lumpy. The reason is the fuel metering unit draws on the breathers and it meters this air. When you take the cap of, you introduce unmetered air into the induction system which also drops the amount of vacuum and causes it to run too lean for it to stay running.
A poorl sealed dipstick or gaskets on the engine can also effect the way the engine runs.
My car has had the breathers removed from the induction system completely and have blocked the port of in the the meter unit and the car set up accordingly. The breathers than go to a breather oil seperator and then to atmoshpere (a catch tank could also be used but it still ultimately breathes to atmosphere).
A poorl sealed dipstick or gaskets on the engine can also effect the way the engine runs.
My car has had the breathers removed from the induction system completely and have blocked the port of in the the meter unit and the car set up accordingly. The breathers than go to a breather oil seperator and then to atmoshpere (a catch tank could also be used but it still ultimately breathes to atmosphere).
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