TheAlfa Romeo Twin Spark engine first emerged commercially in 1986 as an eight-valve 2.0-litre four-cylinder used in the 75 saloon. The 75 engineās Twin Spark technology allowed for the fitment of larger intake valves for more power, yielded a smoother-running engine at partial throttle and produced better combustion.
PreviousAlfa Romeos: 1976 Alfetta GTV Coupe 1981 Alfetta GTV SE Coupe 1996 Alfa 155 2.0 Twinspark Now here is the results from the 2005 JTS with the starting/running issues: ENGINE OFF (but after cranking to increase pressure) Fuel pressure (Measured) - 5.5 Bar Fuel pressure (Calculated) - 5.5 BarAsa follow up, i have gotten the engine head cleaned up, changed the crankshaft and cleaned the fuel injectors. All suggested by a very good mechanic known for Alfa knowledge. I am very satisfied with the results as all the symptoms are gone now and the car sounds smoother and spends much less engine oil. Thanks guys for the help Theproblem with a lot of the JTS engines is they left the factory with the wrong inlet cam and an incorrect map - I would get it checked out and get Alfa Romeo to put it right under warranty. Alfa Romeo forum: JTS low power problem resolved. Save Share. Reply Quote. G. G5een Discussion starter
20 JTS engine oil confusion. Hmm, I may have given myself a āsituation.ā. Iāve only had the GT about 6 weeks and have had to top up the oil. Its got a 2.0JTS engine and what I didnāt realise is the handbook specifies 10w-60 oil. Without thinking I used the oil left over from my 1.8TS, 10w-40.
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