Gday dudes,
The injectors off my EF 4 litre are dirty little buggers, is is possible to effectively clean them by soaking them in petrol or something over night, lol. Also the butterflies in the BBM don't completely shut when they are in the closed position and when fully open have a slight angle to them, is this normal, sholud I adjust them to completely shut and fully open?

Cheers Cammo~

settle pettle.

best way to clean them is in the machine at the local efi shop

injector shops use ultrasonic cleaning and are then usually flow tested.

the BBm should close all the way, when it opens to WOT the valves do not fully open, they open about 85% u can adjust this i have and is proven for a increase in power,

and yeh injectors are best left to the pros as they they need to be stripped apartt, new filters,seals,o'rings etc, you cant clean em ya self or test the flow of them

Just jokes with the heading, lol. Cheers for the replies, I'll adjust the valves so they fully open see how we go. Also the gasket between the head and manifold is fairly rough and blocks some of the intake ports, cutting this back should see some minor herb increase of some sort.