15 replies to this topic

[abridger1275]

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Model:mini1275 rio
Year:1993
Description of problem (please be as in depth as possible):
well i tried fitting a cone filter this afternoon and had a few issues n what not so i decided to go back to the original set-up of the airbox, but now when i re-fitted the carburettor , without the choke or throttle cables connected and both connections in their closed position the engine is idling at 4000rpm!! i have checked the condition of the needle and it is fine, checked the damper, fine, checked the dashpot oil, fine, butterfly is fine, so now im really stuck, im dreading it being anything worse! i really need the car as it is my daily! any help asap would be greatly recieved!!


Any non-standard parts that might be involved with the problem?
LCB? minispeed inlet manifold

[brad88]

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Model:mini1275 rio
Year:1993
Description of problem (please be as in depth as possible):
well i tried fitting a cone filter this afternoon and had a few issues n what not so i decided to go back to the original set-up of the airbox, but now when i re-fitted the carburettor , without the choke or throttle cables connected and both connections in their closed position the engine is idling at 4000rpm!! i have checked the condition of the needle and it is fine, checked the damper, fine, checked the dashpot oil, fine, butterfly is fine, so now im really stuck, im dreading it being anything worse! i really need the car as it is my daily! any help asap would be greatly recieved!!


Any non-standard parts that might be involved with the problem?
LCB? minispeed inlet manifold

what carb is it hif38-44? 44 probably but either way, put on the cables to start with and if its still bad then try adjusting the idle screw which is located at the bottom right of the dashpot looking down on top of it with the airbox off, screw it out (anti-clockwise) and the revs will fall, screw it in (clockwise) and the revs will rise, keep trying until its about right, best to let the car warm a little before doing it aswell, hope that helps, brad

Edited by brad88, 24 January 2009 - 09:34 PM.

[abridger1275]

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Model:mini1275 rio
Year:1993
Description of problem (please be as in depth as possible):
well i tried fitting a cone filter this afternoon and had a few issues n what not so i decided to go back to the original set-up of the airbox, but now when i re-fitted the carburettor , without the choke or throttle cables connected and both connections in their closed position the engine is idling at 4000rpm!! i have checked the condition of the needle and it is fine, checked the damper, fine, checked the dashpot oil, fine, butterfly is fine, so now im really stuck, im dreading it being anything worse! i really need the car as it is my daily! any help asap would be greatly recieved!!


Any non-standard parts that might be involved with the problem?
LCB? minispeed inlet manifold

what carb is it hif38-44? 44 probably but either way, put on the cables to start with and if its still bad then try adjusting the idle screw which is located at the bottom right of the dashpot looking down on top of it with the airbox off, screw it out (anti-clockwise) and the revs will fall, screw it in (clockwise) and the revs will rise, keep trying until its about right, best to let the car warm a little before doing it aswell, hope that helps, brad

already tried that, its hif38 and iv wound the idle screw rite out and the butterfly of the carbs like in the shut position its still revving really high, any one else?!

[glyn]

is the dash pot on straight the float needs to move inside smoothly

[abridger1275]

yh the dashpots on fine, its like its doing what it wishes, i literally turn the key and it revs up straight away to 4000rpm i cn lower the revs by semi covering the carb elbow and it sucks reli hard haha, i can rev the engine via the accelerator pedal, just seems like theress no explanataion as to why its revving so bad.

[glyn]

if the air filter is not on it will rev fast u need the air filter on.

[abridger1275]

does the same with the airbox on, i was out today for a good 4 hours confused to death!

[abridger1275]

sunday morning bump! i need help!!! arrr

[insamoufonyx]

you sure the dashpot isnt wedged open?, or have you acerdently bent the needle? even the tinyest bend can make a huge difference!

[gregster]

Have you had the cables off ? you may have set the linkages open on the choke/throttle cables
better to have a little play in the cables than setting them tight

[Hagar]

Is the return spring fitted correctly?

[mini_mad69]

Air leak?

[Pauly]

Would of said air leak aswell.

Paul.

[dklawson]

Under what conditions have you guys seen air leaks increase engine speed? The only places I've come across leaks are AFTER the carb. Those leaks have created weak mixtures that typically won't allow the engine to even run unless you pull the choke WAY out.

[abridger1275]

iv run with the cables disconnected and the dashpot is on 100% the butterfly isnt stuck open or anything, ive been led to believe by a friend that i could have a vacuum leak after the carburettor?