I've had previous issues with surging at highway speeds 70 mph and hesitation when starting off from a complete stops. I have cleaned injectors with sea foam solution direct into the fuel rail with a pressure canister and had fair results but the condition always comes back all too soon. So I decided to replace the injectors with rebuilt injectors and replace the spark plugs. The injectors removed showed deposit build up on the tips of varying degree and the spark plugs were the factory original, most were beige in color (good) two showed a white color (lean) and one showed a darker color (rich). After all was together and started the motor it ran rough and in driving around the block it has an obvious miss. P codes 1300 and 2100 are in memory. Messages poor performance and engine fault come and go. The only other service performed was an oil and filter change and air filter cleaning. miles 63500, 97 xk8. I've searched the forum for codes 1300 & 2100 to no avail. To the collective wisdom of the forum what are these codes and what would be the best way to isolate the faulty cylinder miss. Also there is no tell tail raw fuel smell at the tail pipe so I don't think it is a spark plug problem. Thank you for any and all help.

D. Meyer

 

Dale - I checked the DTC list posted in the How To's as well as several MY listings on Gus's site and did not find either of those codes. Hopefully someone else will come along and advise

regards,
steve

 

Bump!!! any help for Dale????

 

Did you do a hard reset after all of your work? Any time you unplug / replug anything or make modifications to the car without removing the battery lead you are asking for trouble.
As for the P1300 = Boost calibration Fault, P2100 = Throttle actuator motor circuit open.

I would need to look into it a little deeper but for now I would check to make sure all your plugs are set and secure in place. I would also make sure that your battery is fully charged and last do a hard reset and see what takes place.