Engine misfire

[neilgsxr69]

If it’s only when cold it could be the intake valves sticking slightly due to carbon build up.

 

[teo.mike]

Could be...we'll see. I will let you know, I hope

 

[teo.mike]

I will change part by part till the car will work nice

 

[teo.mike]

Seems to be HPFP. Fuel pressure 17 instead of 40...something. Interesting that the missfires keep like 40-50 seconds, not all the time but few days interval, on cold engine. After that, the car works very well.
I will keep you update after the pump change, in a week or two ( original RCZ pump arrives in about two weeks).
Till than I ordered an OBD 2 to erase future errors, if necesary

 

[lfe]

I am in a similar situation, some days it starts fine, others it takes about a minute to idle smoothly, with misfiring and a bad exhaust smell.
If I try to drive like this, the famous fault P0087 fires.

The problem is undoubtedly the HPFP, I have observed the pressure with the Torque app, sometimes it quickly rises to the normal 5000 kPa (50 bar) but other times not, or oscillates again to low values.

Within 2 weeks I will disassemble the pump and send it to a person who repairs it here in Spain.

 

[teo.mike]

Unfortunatelly here are no repair person, so I have to buy a new one. And yes, bad exhaust smell here,too

 

[teo.mike]

Oh, and the reason for shaking on acceleration: two hoses, one of them goes to rocker cover. Changed them and all is ok

 

[gherse96]

Oh, and the reason for shaking on acceleration: two hoses, one of them goes to rocker cover. Changed them and all is ok

Hi, can I say exactly how hoses have you changed? Thank you