I have recently installed new engine in my civic 1995, i have installed the same D15b assembly and it was as good as brand new. On old engine i have never checked its petrol Average, on old engine it was giving me arround 120 to 140 per cylinder in local with light foot not exeeding 1.8-2k RPM and on long 150-180 per cylinder. I'm planning to visit punjab by road so i just want to know about how much petrol average i will get on high way. Recently i filled the petrol tank till top (47 Litres PSO pump) and it gave me arround 434km which was 55% Aggresive driving with full acceleration in first 2nd and 3rd gear and 45% light foot under 2.8k rpm max.
In this 434km running i visited charna Island (Mubarrak Village) around 130km Trip and 70KM on sea view Road. rest of the 234km is in city and in heavy traffic traveling between tower to serena mobile market and Ayesha Manzil etc etc.
As per my mechanic my carb is not good RPM never stay stable it keep increasing and dropping on idle rpm and also turn off the car when we accelrate and release the gas when rpm drops it drops below the idle race and some times shut down the engine.
So now we come to topic and i wanted to know that if i change the carb and installed new carb along with manifold ttcp will my average improve ? Also i wanted to know how much it will give me on long route on high way on this carb (2kRPM @ 80kmh).
There is a plastic thing on manifold (ttcp) its broken and blocked from inside using magic. He told me its useless to open it and repair it and carb ia also faulty as it was not driven on petrol for long time. So he told me to replace the whole thing and tension free. My mechanic is trust worthy when every one was trying to rob he always do my work in very reasonable. Also the guy who gave me hia reff he is almost 10 years old customer of him.... Well i will show pics tomorrow if that thing is repair able i will take the car to mahmood and i will update you about his cmnts.