Hi, new to the forum, so hello everyone. Need help to sort out my fiesta si 1.4. I've had all the usual tick over problems which I sorted with a new MAF and that round plastic breather thingy. Problem is its lacking any power. It just feels so flat and has no get up and go. Basically I'm getting fed up with getting pi55ed on by 1.1's. Is the engine just tired or can any of you suggest anything else to look at?
By the way it on a M plate, done 70K.

Serviced it recently? If not then change plugs, leads, filters and oil. Use good quality items, specallly for leads.

If you have then check gap on plugs is right.

Checked inlet air temp sensor/ coolant temp sensor?

Could be lambda.

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- A forum dedicated to the Fiesta Mk7 - 1 year old and going strong!
Info and guides on the Mk3 Fiesta

I like boost! Formerly cookie456_the2nd

My bad too,


Welcome! Get some pics up and where you from too?

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- A forum dedicated to the Fiesta Mk7 - 1 year old and going strong!
Info and guides on the Mk3 Fiesta

I like boost! Formerly cookie456_the2nd

you had your cat checked out buddy?could possibly be blocked

welcome to fsi

Forgot to mention, changed plugs, leads, filters and lambda. Does the car have a fuel filter and if so where? Heard else where that some of the fiesta's don't. Its just failed its mot on the lambda but passed after I changed the plastic thingy.

if its like the 1.6 then it(fuel filter) should be on the passenger side just behind the battery, by the jack

edit:- you got a haynes manual?

Ok, found the fuel filter, round metal thing, seems ok but a change won't do any harm I guess. Where can I find the air temp sensor and can I check if its working? Thanx boys

air temp sensor is at the back of the inlet manifold iirc, if its like the zetec engine'd fiesta that is

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Some people are like slinkies. Not really good for anything, but bring a smile to your face when pushed down the stairs!

From the moment I picked up your book until I laid it down, I was convulsed with laughter. Some day I intend reading it.

Car does rev ok when out of gear but like you say when driving it does struggle to get much passed 3k. Hills are a nightmare, the car just throws the towel in going up hill.

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Some people are like slinkies. Not really good for anything, but bring a smile to your face when pushed down the stairs!

From the moment I picked up your book until I laid it down, I was convulsed with laughter. Some day I intend reading it.

When I was trying to get the lambda reading down for the mot my mate in the garage said it smelt a bit caty. Will have to try and remove it and replace with some pipe to check. Does seem to be a fair bit of pressure at the tail when revv'd tho. Will keep you all informed.

Analogy:
Exhale really quickly.
Now breathe through a straw with spirit and the pressure is increased.

An engine produces a suprising amount of exhaust gasses......hense why you often get a whistle, more than the straw in my anaolgy can perhaps handle....esspessially once the engine produces more and more exhaust gasses at say........3k rpm

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Some people are like slinkies. Not really good for anything, but bring a smile to your face when pushed down the stairs!

From the moment I picked up your book until I laid it down, I was convulsed with laughter. Some day I intend reading it.

When I boot it, it just makes a baaaaaaaaa nose and goes nowhere.....lol. Thank for your help. Will get back to you when I'm ready to try it again. Thank again.

Not sure if all these problems are making my fuel costs go out the window. anyone know what the mpg is on my 1.4. If I stick a tenner in I get about 70 miles out of it, that vgery very steady driving.

could b a blocked breather as its cvh 1.4 si, they sufffer from blocked breathers

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Rip Ben Elvin (jam)

Which ones do i check?

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Rip Ben Elvin (jam)

i had tha problem on my 1.4 mate cleaned it up it went better then, glad to see another 1.4 anyway, every1 on here seems to have a 1.6 or 2.0 lol

mine seems really slow aswell but does keep revving up 2 6300rpm but theres a point between 4500 revs and just over 5000 ish where it is lacking power, in 1st anyway. ive only ever given mine a boot in 1st around where i live as im only learning to drive atm got my test in 3 weeks, duno what it goes like booting it through all the gears.yet.

anyway get sum piccies up on here!!

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Suzuki Ignis Sport - ITG Maxogen - Japspeed 4-1 - Decat - 2" custom single box Scorpion exhaust 3" tip - Magnecor leads - Air con Removed - Apex 35mm springs - OMP Strut brace - Whiteline rear arb - EBC Greenstuff front pads - MTEC grooved/drilled discs - Team Dynamics Pro rally 15X6J ET28 - Toyo tyres - Rallyflapz - Black lamps - Smoked repeaters - Sparco pedals - Stripped 40kgs rear interior
125.4BHP 126.6LBFT

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Some people are like slinkies. Not really good for anything, but bring a smile to your face when pushed down the stairs!

From the moment I picked up your book until I laid it down, I was convulsed with laughter. Some day I intend reading it.