sioneon Posted October 12, 2017 Share Posted October 12, 2017 Hi, after some advice on whether a fiesta diesel is any good. My wife has a Mazda 2 diesel which we need to get rid of and are looking at a fiesta as a replacement, something from 2015-2016. We get around 65mpg from it currently on a mix of distances. I've got an ecoboost fiesta so know the car well, just know nothing about the diesel engines. So my questions are: Are the diesels any good? What known issues are there? Is it worth getting a diesel or should we go for petrol? Quote Link to comment Share on other sites More sharing options...
alexp999 Posted October 12, 2017 Share Posted October 12, 2017 How many miles do you do a year and what length journeys? Quote Link to comment Share on other sites More sharing options...
sioneon Posted October 12, 2017 Author Share Posted October 12, 2017 About 10k and 15/20 miles Quote Link to comment Share on other sites More sharing options...
alexp999 Posted October 12, 2017 Share Posted October 12, 2017 Ecoboost then. Don't bother with a diesel. Quote Link to comment Share on other sites More sharing options...
Fiesta1.25 Posted October 12, 2017 Share Posted October 12, 2017 Ecoboost then. Don't bother with a diesel. Can I ask why a diesel isn’t advisable with an annual mileage of 10k? I had a turbo diesel and averaged out about 12.5k per year (also lots of short stop start journeys) had it for three years with no problems with it al all Quote Link to comment Share on other sites More sharing options...
alexp999 Posted October 12, 2017 Share Posted October 12, 2017 5 minutes ago, Fiesta1.25 said: Can I ask why a diesel isn’t advisable with an annual mileage of 10k? I had a turbo diesel and averaged out about 12.5k per year (also lots of short stop start journeys) had it for three years with no problems with it al all What age was it? It's not so much the mileage as the journeys. All the modern ones have DPFs. 15-20 miles per journey isn't really enough for the DPF to keep itself clean. Quote Link to comment Share on other sites More sharing options...
Fiesta1.25 Posted October 12, 2017 Share Posted October 12, 2017 Ah ok that clears that up for me, as it was a 2006 which didn’t have a dpf, so didn’t have to worry about keeping it clean.Cheers Quote Link to comment Share on other sites More sharing options...
sioneon Posted October 12, 2017 Author Share Posted October 12, 2017 Typically how often does a diesel have to do a dpf regeneration and what is required for it? Quote Link to comment Share on other sites More sharing options...
alexp999 Posted October 12, 2017 Share Posted October 12, 2017 It depends on the temperature, the way you drive, the type of roads you drive on. Engine speed, engine load. Lots of different factors. But it probably needs about 10-20 mins to do it's thing with a hot engine and exhaust. (i.e. engine must be fully up to temp before it even starts). If it can't do a regen it will keep trying until eventually the pressure sensors trigger a fault code and warning light. Quote Link to comment Share on other sites More sharing options...
zain611 Posted October 12, 2017 Share Posted October 12, 2017 Doing short journeys will just clog up the DPF. Was curious like fiesta1.25 to why that sort of mileage isn't good for diesels. My uncle got his DPF removed and remapped out of his merc so this could be done if you got a newer diesel. With my car I'm planning on fully / partially blocking the Egr valve to reduce the soot build up. Quote Link to comment Share on other sites More sharing options...
alexp999 Posted October 12, 2017 Share Posted October 12, 2017 DPF removal is now illegal and an MOT failure. So not an option anymore. 2 Quote Link to comment Share on other sites More sharing options...
james_60 Posted October 12, 2017 Share Posted October 12, 2017 2 hours ago, zain611 said: Doing short journeys will just clog up the DPF. Was curious like fiesta1.25 to why that sort of mileage isn't good for diesels. My uncle got his DPF removed and remapped out of his merc so this could be done if you got a newer diesel. With my car I'm planning on fully / partially blocking the Egr valve to reduce the soot build up. i would not have said that if i was you. naughty naughty. you dont partially block it. you stainless steel plate it fully Jamie 1 Quote Link to comment Share on other sites More sharing options...
zain611 Posted October 12, 2017 Share Posted October 12, 2017 Lol sorry Jamie, the reason I said partially is because I don't know if the car will through up a engine management light if I fully block it. I've seen some plates for my 1.6 tdci, ones which have a small hole and others with no holes. If I blank it fully and the engine management light comes on I may have to put a blanking plate with a small hole. My dad is thinking of removing the pins on the electric motors which operates the flaps in the Egr so it would think it's opened the flaps but it's still closed. Have to see if it works. Quote Link to comment Share on other sites More sharing options...
james_60 Posted October 12, 2017 Share Posted October 12, 2017 If you have it fully blocked off you can have the ecu recalibrated by a tuning specialist so that no eml comes up. I was thinking of having it done but how much benefit would i really get and would i get my money back in fuel savings. Jamie Quote Link to comment Share on other sites More sharing options...
zain611 Posted October 12, 2017 Share Posted October 12, 2017 The main reason I'm thinking of blanking it out is to reduce all that soot from accumulating in the engine. Yes you will increase the amount of harmful gases from leaving the car but you won't lose power. 1 Quote Link to comment Share on other sites More sharing options...
zetec Adam Posted October 12, 2017 Share Posted October 12, 2017 Just unplug it so it's stays shut an eml light is only advisory anyway on mot or just wipe the code that all I've done and car is fine Quote Link to comment Share on other sites More sharing options...
zetec Adam Posted October 12, 2017 Share Posted October 12, 2017 Ignore me I was thinking of egrs for some reason lmao Quote Link to comment Share on other sites More sharing options...
zain611 Posted October 13, 2017 Share Posted October 13, 2017 20 hours ago, zetec Adam said: Just unplug it so it's stays shut an eml light is only advisory anyway on mot or just wipe the code that all I've done and car is fine When you said wipe the code did just remove the code with a diagnostic unit or did you take the car to a tuning company to remove it. Having said that a few months ago the engine management light came on saying something about the Egr. Back then I was just driving the car from the driveway into the garage at low speeds until my insurance ran out for my previous car (which then I could drive the current car on the road). I deleted the error code and since then nothing has come up. Quote Link to comment Share on other sites More sharing options...
zetec Adam Posted October 13, 2017 Share Posted October 13, 2017 I just unplugged egr sensor and drive round with eml light on Quote Link to comment Share on other sites More sharing options...
zain611 Posted October 13, 2017 Share Posted October 13, 2017 You didn't get no limp mode / loss of power did you Quote Link to comment Share on other sites More sharing options...
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