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R33 miss firing problem

RamR33

By RamR33,
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RamR33

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R33 miss firing problem

Hello guys

My r33gtst has been running rough the last week or so

Have a adaptronic ecu,1400cc xspurt injectors/custom rail aeroflow,walbro 460,turbosmart fuel pressure regulator and all e85 lines 

The problem im having is it just misses makes a similar sound from exhaust toof toof toof missing and when cold is all over the place 

Once warmed up it starts to clear up abit better And smoothen out more when driving it 

I have just also noticed when im in first gear clutch in and rev it say to 1500rpm it sounds realy rough but when i engage the clutch to say stress point hold it there it all smoothens out perfect until clutch in again and runs rough misses all through from 800rpm - 4000rpm idle

 

I have changed plugs,checked all coil packs,all injectors ,changed all fuel hoses (e85) 

Checked replaced all vacuum hoses and checked all cooler pipe hoses 

Im leaning towards ecu,maybe blocked injector or vct 

 

Any ideas 

 

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RamR33 Community Regular

RamR33

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Quick update 

I think it might be injector 5 

When cold i disconect the coil pack 5 and runs rough then plug it back in and is fine 

When it warms up i try the same thing again and only a slight cut out not like when its cold

Might have to swap the injector to 1 to see if it happens there as ive swapped coil packs and does the same thing on number 5 

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