Fiesta ST This forum is for discussion of all things pertaining to the Ford Fiesta ST Range of cars.

Mk6 Fiesta ST power problem and struggling to rev over 6000rpm

Thread Tools
 
Search this Thread
 
Old May 29, 2017 | 08:10 AM
  #1  
Robbiem35's Avatar
Robbiem35
Thread Starter
Virgin
 
Joined: May 2017
Posts: 2
Likes: 0
From: Stoke on trent
Default Mk6 Fiesta ST power problem and struggling to rev over 6000rpm

Hi
I recently purchased a 55 plate fiesta ST 89000 miles on the clock. Starts up fine. But when i drive it it feels like for how the engine is performing there is a loss of power sonewhere. It also doesnt like revving past 4500 rpm as it starts to struggle and splutter as if its hitting a limiter there but this changes from time to tine as it could be 6500 rpn or 5000 rpm. I asked a mechanic what it could be he said its more than likely the coil pack leads and plugs. So i changed all of that and still the same problem. I noticed on the old plugs that there was a white sutt on the tips which means not enough fuel getting through. Could this be the fuel filter or pump as i have checked and the filter looks as if its the original plastic one? Or. When i brought the car it has got a graham goode induction kit on but witg no maf sensor on and i cant find the plug that comes off the engine to fit the maf sensor. Where could i locate this plug as i know it would throw the ecu out of balance for fuel and air mixture. Please help me as its proper getting on my nerves now. Ready just blow the thing up lol. Cheers
Reply
Old May 29, 2017 | 09:28 AM
  #2  
liam-rst's Avatar
liam-rst
shit happens
iTrader: (1)
 
Joined: Jan 2009
Posts: 2,985
Likes: 3
From: essex
Default

I know the 2.0 duratec has issues with the plastic butterflies in the inlet, although I'm not sure its the same in the fiesta st's, I know its been an issue on the focus and mondeo 2.0's
Reply
Old May 29, 2017 | 09:59 AM
  #3  
Robbiem35's Avatar
Robbiem35
Thread Starter
Virgin
 
Joined: May 2017
Posts: 2
Likes: 0
From: Stoke on trent
Default

The butterflies are working fine mate these ones are metal in mine mate going change my fuel filter today see if it makes a difference
Reply
Old May 29, 2017 | 10:18 AM
  #4  
liam-rst's Avatar
liam-rst
shit happens
iTrader: (1)
 
Joined: Jan 2009
Posts: 2,985
Likes: 3
From: essex
Default

Well good luck with it mate, as I Said I didnk know if the st's suffered the same fate, I know they have engine codes unique to them, worth a check
Reply
Old Jan 19, 2018 | 12:45 PM
  #5  
pyle's Avatar
pyle
Wahay!! I've lost my Virginity!!
 
Joined: Sep 2016
Posts: 60
Likes: 2
From: Sofiq
Default

The Fiesta doesn't have butterflies like the Mondeo and Focus?!
Reply
Old Jan 19, 2018 | 04:33 PM
  #6  
Caddyshack's Avatar
Caddyshack
10K+ Poster!!
 
Joined: Mar 2013
Posts: 10,837
Likes: 1,033
From: Guildford
Default

Have you put a fault code reader in the odb port? Could be so many things like fuel pressure, timing, misfire etc..
Reply




All times are GMT. The time now is 04:18 AM.