escort backfires after 1/2 throttol changed the plugs phase sensor crank sensor water & air sensor 3bar map sensor its running on green injectors fuel pump and filter i noticed that the plugs are black like she is overfueling and down the plug hole it seems to look wet on top of the piston i don,t no what chip has been fitted as it was done 7 years ago it has a sticker on on the window saying superchip could it be the chip playing up or does any one have any suggestions and if any body no,s someone down in s/wales that deals with cosworths so that i can contact them thanks

 

Try to reset ecu

 

hi thanks for your reply but how do i reset the ecu
thanks

 

Resetting ecu will do nothing, you have a problem.
If it is overfuelling which it certainly sounds like, then you have the the correct things so far, but try the lamda now as this is lamda controlled.
tabetha

 

I hade the same problem on mine, but on idle. This was fine after reset ecu.
It was a link some plase her to ggr racing, about how to do it