Hi.
Mine started to play up. When cold engine starts 1-2 cranks and running. Than the revs go up and down. Set at around 1000 for 2-3 sec. Than go up to 1500 and go down to 800-900 starts being very rough and goes to 1000 and cycle repeats. If I push acceleration pedal, first it loses almost all its power and than revs go up.
Coils/plugs/cables changed. mAF sensor cleaned.
Error codes: pending P0301 misfire 1st cylinder. Milage : 47k.
compression test to be done this week- results as soon as I have them. I have video on this behaviour if helpful. Engine starts hot and cold. When started hot usually keeps 900rpm for around 2-3 sec after start than stalls. Is there anything else I can check/replace before taking it to a workshop?

 

Did the engine run well after the ignition system change? When did you change the ignition?

You can check these items:

1. Make sure the spark plugs are torqued properly
2. Make sure the leads are seated completely
3. Make sure the leads go to the correct plugs
4. Clean the ESS
5. Clean the battery terminals and clamps
6. Check all engine bay grounds for cleanliness and tightness
7. Perform the 20 brake stomp procedure or disconnect the negative battery cable overnight

Very good diagnostic information also available here:

https://www.rx8club.com/new-member-f...causes-249529/

 

Compression test done:

Front rotor 90PSI x3
Rear rotor: 0PSI x 3

We know the problem...... I guess I will need to look for a new engine :-(

 

sorry to hear that.

 

Yep...surprised it started at ALL

 

Just for curiosity.. if I disconnect the rear rotor (shut off fuel and spark to it) will it run on just one without misfires?

 

😂😂😂😂

 

Another owner who should not be ... sad, indeed.