'02 MG ZT 190+ low compression
Ive had this car for a few months and it's my first ZT, after having two 400 and 200 series R8 and a MGF in the past.
The car wasn't perfect, but it was virtually a 1 owner from new and a full service history, with the belts changed a couple of years ago.
The engine wasn't very smooth and only a very minor judder at idle. Also, on startup, but not always, it would smoke a bit, but I took that as down to stem seals.
Despite a couple of issues that were easy to sort out, it has been a pleasure to drive.
Not long ago, I had a T4 session where it was detected that the balance ViS was faulty. I purchased and installed refurbished vis motors and sudddnly the big problems started. The car, although performed and acceletated better, it started to judder more on idle, as if it was misfiring. Then, the engine light came in. I used a generic code reader and it said that indeed there is a misfire on cylinder 1. The plug on cylinder 1 looked a bit oily, and the others were dry. Still, New plugs, swapped coils and cables... nothing. Still the damn misfire on cylinder 1 and the code reader says it fails to read the o2 sensor... but not showing showing up as an error in the ecu...
Well, Did a compression test and it's not good news.
Cylinders 2 to 6 gave a reading of around 170-180, the cylinder 1 gave around 100. Poured a teaspoon of oil into it and the compression jumped to the same as the other cylinders.
Question now is:
Change the oil to and add an additive to help temporarily recover some compression or sell the car?
Repairing it would be expensive, I assume?