Jump to content


Photo

Misfiring Problem Mk4 1.3 Fiesta


  • Please log in to reply
9 replies to this topic

#1 msajohnson94

msajohnson94

    Settling In Well

  • Budding Enthusiast
  • PipPipPip
  • 91 posts
  • Name: marc
  • Ford Model: ford focus 1.6l 16v
  • Year: 2000
  • Location: Kent

Posted 14 September 2013 - 07:47 AM

hi i have a mk4 1.3 fiesta with a misfiring on 2 and 3 changed the ht leads and wont start. i took of the rocker to try and get the first piston top dead centre but very last rocker and the last valve has a gap width of a little finger and the rockers are covered in grit and lumps of dirt.  



Have something to contribute?

Sign in or register to start a topic...



Sign up to FOC Premium Membership To Remove These Ads

#2 Zachayter

Zachayter

    Member

  • Budding Enthusiast
  • PipPip
  • 21 posts
  • Name: Zach
  • Ford Model: Somerset
  • Year: 2001
  • Location: Somerset

Posted 14 September 2013 - 09:29 AM

Taken from my thread on this:

 

<<<<<<<<<<<<<<<<<<<<<<< UPDATE >>>>>>>>>>>>>>>>>>>>>>>>>
<<<<<<<<<<<<<<<<<<<<<<< UPDATE >>>>>>>>>>>>>>>>>>>>>>>>>
<<<<<<<<<<<<<<<<<<<<<<< UPDATE >>>>>>>>>>>>>>>>>>>>>>>>>
 
I purchased a cheap throttle position sensor from ebay for £15 (genuine part normally costs £70), fitted it and didn't solve the problem, so moving on.
 
After some research this is what I have found with regards to the stuttering/fuel starvation/misfiring :::
 
ecutesting.com :::
This common fault of misfire on two cylinders or complete non start is often caused by the ignition coil pack shorting out on the vehicle - it is very important that the ignition coil pack is replaced at the same time as refitting your ECU after it has been repaired - or your faulty coil pack may damage the repaired ECU. - http://www.ecutestin...u_misfire_.html
 
EXCELLENT thread from RAC.co.uk on this topic :::
Lots of detail into this very common Focus MK1 98-04 fault here: 
 
How I think the problem occurred :::
I believe that when the speed sensor started malfunctioning I continued to drive the car, which may have caused the faulty speed sensor to damage the Ignition Coil Pack which then damaged the ECU.
 
How I'm going to tackle it now :::
Take out the ECU, read it's part number and send the ECU off for repair/replacement by ecutesting.com for (hopefully) £150.
Purchase new ignition coil pack for £25.
 
Will let you know how it goes  :)
 


#3 msajohnson94

msajohnson94

    Settling In Well

  • Budding Enthusiast
  • PipPipPip
  • 91 posts
  • Name: marc
  • Ford Model: ford focus 1.6l 16v
  • Year: 2000
  • Location: Kent

Posted 14 September 2013 - 05:06 PM

sorry but is the same as a mark 4 ford fiesta 1.3?



#4 Zachayter

Zachayter

    Member

  • Budding Enthusiast
  • PipPip
  • 21 posts
  • Name: Zach
  • Ford Model: Somerset
  • Year: 2001
  • Location: Somerset

Posted 14 September 2013 - 08:23 PM

Just found this but then saw your Fiesta is 2000 year, I'd put my money on this being the problem though. Google and research your symptoms before shelling out though I would!

"Ford Fiesta 2002 – 2008 misfiring on two cylinders.

The 2 cylinder misfire is the most common fault caused by the engine ECU for the Fiesta 2002 - 2008, the fault is originally caused by a faulty ignition coil pack that spikes voltage back to the engine ECU and blows the ignition output circuits for 2 of the cylinders. We can test and rebuild your engine ECU to cure this problem." - http://www.ecutestin...ecu_faults.html

#5 msajohnson94

msajohnson94

    Settling In Well

  • Budding Enthusiast
  • PipPipPip
  • 91 posts
  • Name: marc
  • Ford Model: ford focus 1.6l 16v
  • Year: 2000
  • Location: Kent

Posted 14 September 2013 - 10:37 PM

thanks for the advice im going buy a second hand coil pack and ecu see if i can get it running 



#6 msajohnson94

msajohnson94

    Settling In Well

  • Budding Enthusiast
  • PipPipPip
  • 91 posts
  • Name: marc
  • Ford Model: ford focus 1.6l 16v
  • Year: 2000
  • Location: Kent

Posted 15 September 2013 - 10:09 PM

update of the fiesta. found out the rockers weren't actually sitting on the push rods right might be the cause of the misfiring but ive changed the leads anyway. also another question will a 1.6 distributor work on a 1.3 fiesta?  



#7 msajohnson94

msajohnson94

    Settling In Well

  • Budding Enthusiast
  • PipPipPip
  • 91 posts
  • Name: marc
  • Ford Model: ford focus 1.6l 16v
  • Year: 2000
  • Location: Kent

Posted 16 September 2013 - 09:44 PM

update just tryed starting it up and its just turning over but trying to start. i managed to start it up but had to keep the revs up to keep running but i took my foot of and it cut out. any suggestions .



#8 msajohnson94

msajohnson94

    Settling In Well

  • Budding Enthusiast
  • PipPipPip
  • 91 posts
  • Name: marc
  • Ford Model: ford focus 1.6l 16v
  • Year: 2000
  • Location: Kent

Posted 17 September 2013 - 12:07 PM

update i am now selling it as i think the engine is shot



#9 wase16ll

wase16ll

    Ford Enthusiast

  • True Ford Enthusiast
  • PipPipPipPipPip
  • 1,133 posts
  • Name: Tony
  • Ford Model: granada
  • Year: 1992
  • Location: Greater London

Posted 17 September 2013 - 03:37 PM

If rocker not sitting on valve, chances are its because it's dropped a valve seat, which was quite common on ohv engine.
It's a fairly cheap repair if you take the head off, send to engineer to recut and press New seat in, then just grind New valve and rebuild.

So worth doing a compression test before condemning the engine

#10 msajohnson94

msajohnson94

    Settling In Well

  • Budding Enthusiast
  • PipPipPip
  • 91 posts
  • Name: marc
  • Ford Model: ford focus 1.6l 16v
  • Year: 2000
  • Location: Kent

Posted 17 September 2013 - 10:39 PM

its alright im not spending any more money on it i need it gone as i just bought a ford granada scorpio 1988 v6 automatic



Have something to contribute?

Sign in or register to start a topic...


Not what you're looking for?

Register now, we have a huge community of enthusiasts to answer any questions you might have



0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users