General jtd misfire at 2500- 3000 revs

[martyh]

as the title says i have started to get a misfire at around 2500 -3000 revs occasional cutting out altogether when the engine is cold ,does this point an injector problem or fuel delivery to the injectors ?

Thanks Martyh

 

[ban1111]

as the title says i have started to get a misfire at around 2500 -3000 revs occasional cutting out altogether when the engine is cold ,does this point an injector problem or fuel delivery to the injectors ?

Thanks Martyh

so is it Ok when the engine has warmed up? no misfire and no cutting out?

 

[martyh]

so is it Ok when the engine has warmed up? no misfire and no cutting out?

thanks for replying
The misfire only happens at 3000 revs after it has warmed up and no cutting out ,but until it warms up it's like a bag of spanners I think the cutting out is possibly due to a drop in fuel pressure ,i can avoid the cutting out as long as i keep the revs up above 1500

 

[ban1111]

I am sorry but i can only add to the list of possible faults,the Fiat/Alfa's had crankshaft pulley can be problematic.when my Alfa started sounding like a bag of nails at tick over
when cold, and hesitant at around 3000rpm,it turned out to be the crankshaft pulley.

 

[martyh]

I am sorry but i can only add to the list of possible faults,the Fiat/Alfa's had crankshaft pulley can be problematic.when my Alfa started sounding like a bag of nails at tick over
when cold, and hesitant at around 3000rpm,it turned out to be the crankshaft pulley.

as it turns out i disconnected the maf sensor and it runs much better so it looks like i need a new one

 

[pete123]

Just bear in mind from past experience that I had a injector on a 110 that caused problems like this . Might not be the same but worth a check