[Mitsubishi_Zero]

Hi all i have had this 7 about 3 weeks and getting bits sorted for the summer so i can just burn up some road lol , problem is i cleaned the aftermarket air filter and tightern up the bolts and secured it properly , now it dosen`t pop air off throught the gears which is good as its not dragging in too muck air ,the only issue i get now is when i come to a stop and press the clutch and brake peddle the revs hit 3k+ so i let off the brake peddle and it drops not too sure what the issue could be as im not that mechanically minded , i can do easy general stuff but wont get too involved , could it be an air leak some where or a loose pipe / hose as i tightern up the inter cooler clips and a few other and pushed then in properly the car is 80% better so must have stopped an air leak some where , any more info would be greatful .

 

[watercow]

Try driving it with a different pairs of shoes!:mhihi:

 

[M3 ROB]

Had this problem on a 911, it was the pedal box flexing but not sure if the Evo is set up the same way :smthumbup

 

[super rover]

whats the floor mats like are they new ,try taking it out

 

[stu8]

Hi all i have had this 7 about 3 weeks and getting bits sorted for the summer so i can just burn up some road lol , problem is i cleaned the aftermarket air filter and tightern up the bolts and secured it properly , now it dosen`t pop air off throught the gears which is good as its not dragging in too muck air ,the only issue i get now is when i come to a stop and press the clutch and brake peddle the revs hit 3k+ so i let off the brake peddle and it drops not too sure what the issue could be as im not that mechanically minded , i can do easy general stuff but wont get too involved , could it be an air leak some where or a loose pipe / hose as i tightern up the inter cooler clips and a few other and pushed then in properly the car is 80% better so must have stopped an air leak some where , any more info would be greatful .

think this maybe needs narrowing down more, try just the brake without the clutch. Do the revs rise if you are at tick over and press the brake/clutch? Do the revs rise if you accelerate and then release the accelerator but dont press the brake/clutch

Deifinitely sounds a strange 1. I suppose the brake system is linked to the air intake system via the brake servo. cant see a clutch link

Stu

 

[Mitsubishi_Zero]

its only when i press the braking i lifted the brake peddle with the clutch fully depressed and as soon as i let the pressure off the brakes the revs drop as far as i can see its not clutch related, oh and btw the discs and pads all round were replaced when i purchased the car maybe have some baring on it ?

 

[super rover]

has it still got the one way valve in the pipe to the servo

 

[Mitsubishi_Zero]

i hate to say this where is the sero located i will have a look , like i say im not technically minded

 

[tommymak]

It does sound like a brake servo/pipe problem as they vacuum off the inlet manifold.... The servo is on the bulk head on the drivers side under the bonnet.

 

[stu8]

i hate to say this where is the sero located i will have a look , like i say im not technically minded

the servo is black circular unit with the brake master cylinder fastened to it, there will be a black pipe coming off it to the back of the engine

Id expect you are looking to make sure that system is still air tight

Stu

 

[Mitsubishi_Zero]

Hi stu

the servo is very clean and the black hose that goes to the manifold is / looks in good shape it also has something in the pipe 1/4 the way along i will try to get the hose off and see if i can clean it incase anything has started to block it .

 

[stu8]

Im thinking more that it could be air leaking when the pedal is pressed, either the servo or the pipe

Only a thought though. This issue of revs rising with brakes sounds familiar but for the life of me I cant think where i've heard it before

Stu

 

[stu8]

Also dont forget the obvious stuff already mentioned, get your head in the footwell, move the brake pedal, and make sure it isnt causing movement of the accelerator

Stu

 

[Mitsubishi_Zero]

Tonight something got me thinking as you just mentioned stu i looked at my pedals low and behold there are mazo ??? cover over the brake and throttle cables so i got my trusty allen keys out and ripped them off there seems more space between the pedals so wont know untill i take him for a spin ,hopefully that`s my issue , i checked under the bonnet and the servo and hoses are mint for an old car its very very well looked after .

 

[super rover]

Mazo ?????

 

[Mitsubishi_Zero]

Yes mazo is the name on the pedal covers and there is a little block by the gear leaver on the console with mazo and the gears 1-5 and reverse the car is a JDM import so assume its a japanese make over there ?.

 

[Gavalar]

mazo?

 

[stu8]

Yes mazo is the name on the pedal covers and there is a little block by the gear leaver on the console with mazo and the gears 1-5 and reverse the car is a JDM import so assume its a japanese make over there ?.

whatever they are, i'd remove them, I hate pedal covers like that, slippy with wet feet, make it easier to catch the wrong pedal, and worst, if they move, can be dangerous

Stu