Hello this problem is doing my head in, i have had two sets of plugs in the car, changed the rotor arm and dizzy cap. I dont think it could be leads cos its only doing when the engine is hot.
The miss is right through the rev range it does not keep boost or anything any ideas ?

 

what car do you have?

sierra, 2wd saff of 4wd saff

 

hello its a 2wd saff g plate. I was thinkin it could be map sensor or that iginition amplier thing. I aint got a clue really as this is my first cossie !

 

what stage tuning you got?

you have two sets of plugs? maybe you check the gaps of the plugs.

 

hello the car is totally standard i have tried the gap of .8 and.6 and still no joy. I just cant understand how it only does it when the car is warm and not got cold

 

always check the phase sensor !!!!!!!!

 

which one is the phase sensor and where is it ?

 

your phase sensor is under the rotorarm/dizzycab.

 

is that the tdc sensor ! what is the gapping for this ?

 

the TDC is the sensor next to the crank pulley. correct if im wrong

 

yes that is the tdc sensor so is this phase sensor expensive and is there any way i can check it ?

 

the only sensor which is expensive is the lambda i guess

 

get yourself gold membership for 20 quid mate, and then go to the technical essay archive where you will find a manual for the YB engine that tells you how to check and gap all sensors