Fiesta tdci 1.4 - Turbo not boosting

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Tue 13 Jan 2015 15:40
Fiesta tdci 1.4 - Turbo not boosting - Rybot

Hi everyone.

I have a fiesta 1.4tdci MY07.
Have changed the injector seals (all 4). Since then the turbo will not boost. I have checked the turbo itself and I is fine. Had a mighty vac on the waste gate and that's working fine too. All the vacuum pipes and intake pipes are fine. The four inlet manifold seals are in a good clean condition and located correctly. There are no fault codes. All the injectors have gone back in the same order they came out and it's running fine... Just won't boost. Please help if you can. Thanks.
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Wed 14 Jan 2015 15:58
Fiesta tdci 1.4 - Turbo not boosting - 547HEW

Starting with the assumption that there are absolutely no codes

Foreign body preventing the turbocharger shaft from rotating, or restricting high rpm? I know you have checked it, but on re-installation is there something upstream that could re-engage with the compressor blades?

Offhand I cant think of anything else that could have happened, that wouldnt give a fault code. There are some air in fuel scenarios that might not give a code, BTW what are you using to show fault codes?

Hope you solve it

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Wed 14 Jan 2015 16:26
Fiesta tdci 1.4 - Turbo not boosting - madf

Check EGR valve and MAF sensor.

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