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Having nightmare with my Fiesta RS Turbo. Have petrol contamination in the oil, its running very lumpy. Was wondering if a head off an XR2i would fit it.
Any advice would be appreciated.
Thanks
Mixed views on the subject but i believe it only to be the very first S1's that have sodium filled valves, but they werent really needed so they stopped fitting them.
OK changed the head today, also injectors plugs leads fuel rail. No longer have petrol in the oil but it seems to be over fuelling. The plugs have caked up and its popping and misfiring.
Any Ideas?