7 replies to this topic

[minitomfoolery]

Hey i've just brought a inline fuel filter. its plastic and clear.

Anyways after fitting it to my mini between the fuel pump and the carb my mini runs really poor, and sounds ike its going to die. anyway ive sourced the problem being the filter. Its like there isnt enough pressure to fill the filter quick enough to provide enough petrol to the carb.

Just wondering if i have to mount it in a particular place, i.e next to the pump or above the carb? ect.



It's a 1275 with a mechanical pump by the way.

Cheers.

[Retro_10s]

It needs to go just before the carb so that anything in any other part of the fuel system i.e. the pump and fuel lines, has no chance of getting in.

Have you put the filter on the right way round? most of them have an arrow on them indicating which way they shwould flow, also - some filters are simply too small and restrict flow - make sure you get a high flow filter.

available from most good motorfactors and halfords...

[Bungle]

got a air lock in it ?

[minitomfoolery]

got a air lock in it ?

Im guessing that's it, how would I get rid of the air lock? suck fuel through first?

[Bungle]

air rises so fix the filter vertically

[dklawson]

It will not be air related. The air will pass through the filter much easier than fuel and almost any horizontal translucent/transparent filter you examine will be partly filled with fuel, partly with air. That's normal. The filter does not have to be free of air to do its job.

As mentioned above make sure you have a filter suitable for a car engine and that it's pointed the right direction. Filters are designed so you flow into the side of the element with more area, and out of the side of the filter with less area. This means if the filter element is conical or funnel shaped, fuel flows into the housing towards the "outside" of the cone, through the element, and out through the "inside of the cone. If the element is cylindrical, the flow goes in the outside of the cylinder, and out from to the inside of the cylinder.

Regardless, you said you've determined that this is a problem with filter itself. How did you determine this? Did you take the filter back out and the problem went away? If you re-used old fuel line (cut the middle and inserted your new filter) you may have dislodged crumbs of rubber from the inside of the old hose which are now blocking the float valve in the carb. Finally, did you install the filter AFTER the pump or before?

[minitomfoolery]

It will not be air related. The air will pass through the filter much easier than fuel and almost any horizontal translucent/transparent filter you examine will be partly filled with fuel, partly with air. That's normal. The filter does not have to be free of air to do its job.

As mentioned above make sure you have a filter suitable for a car engine and that it's pointed the right direction. Filters are designed so you flow into the side of the element with more area, and out of the side of the filter with less area. This means if the filter element is conical or funnel shaped, fuel flows into the housing towards the "outside" of the cone, through the element, and out through the "inside of the cone. If the element is cylindrical, the flow goes in the outside of the cylinder, and out from to the inside of the cylinder.

Regardless, you said you've determined that this is a problem with filter itself. How did you determine this? Did you take the filter back out and the problem went away? If you re-used old fuel line (cut the middle and inserted your new filter) you may have dislodged crumbs of rubber from the inside of the old hose which are now blocking the float valve in the carb. Finally, did you install the filter AFTER the pump or before?

Its deffinatly the correct way around, and its positioned after the pump about halfway between the carb.

It just seems like there isnt much pressure for the fuel to pass through the filter quick enough to fill the carb.

The problem went away right after taking the filter off.

Edited by minitomfoolery, 30 April 2009 - 04:09 PM.

[brad-the-bear]

where did you buy the filter?


brad.

EDIT: just realised the post is 3 years old lol

Edited by brad-the-bear, 17 June 2012 - 03:51 PM.