SupportedAlfa Romeo Models. Alfa 147, 156 & GT. Alfa 156 2.0 JTS spark plug / compression problems. 7396 Views 8 Replies 4 Participants Last post by freedomlives, Jul 17, 2013. F. freedomlives Discussion Starter · Jul 15, 2013. Add to quote; Share Only show this user. 5 Rethe JTS engines compared to the Twinspark the JTS engines are noticibly more powerful and torquier and I felt smoother - I have both a TS 156 and a JTS 156 plus a JTS GT. and still do the odd bit of servicing for past customers at home. 156s are still quite common here and quite a few JTS versions were sold with Selespeed due to The2.0 JTS is Alfa Romeo’s first direct injection engine. JTS stands for “Jet Thrust Stoichiometric“. This engine is based on the 2.0 Twin Spark and shares the same YhJC.

alfa romeo 2.0 jts engine problems