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Anyone have any ideas about apparent unequal fuelling to left & right cylinders. This is in regard to a V7II with the single throttle body, MIUG3 and Y manifold.The left muffler has carbon on its outlet and the right muffler has not, suggesting to me that the left cylinder is running richer than the right cylinder.I have wiped the carbon off and it comes back after a bit of a ride..The spark plugs in both cylinder look about the same but I haven't done a plug chop at road going revs.Any clues people?CheersBrian
(Urgh......) my understanding of *some* parts of this is fairly sophomoric, on others it is quite good. I can try and explain if you like and I'm sure I'll be corrected if I screw up too badly but I'm willing to give it a shot if you're interested?Pete
the map for both cylinders is the same.
gday beetle, I am attempting to learning? Why? They are the same size cylinders, the only difference being the length of the left manifold compared to the right manifold.I had this phenomenem before when the fuelling maps were not equal and this is why I tried to sort out what is wrong with the setup?
Beetle, I have proved that the warmup table is definitely used. If you put the values as zero in the warmup table, the motor will not start, no fuel to the motor.
I believe, however that the Engine temperature correction table is a fuel multiplying factor, not an additive factor and, therefore, 0.98 will affect the whole fuel table on both cylinders.
To my way of thinking, this table is the electronic equivalent of the automatic choke that was fitted to cars in the days of carburettors.
I most certainly will not be touching the Ignition tables as I don't have access to a dyno. The ignition tables can cause horrendously expensive problems if they are wrong.I will be returning to the original fueling tables since the idea of equal tables did not change the symptom to any extent.
Now I just wonder what would happen if the balance pipe were not there at all. Would this affect the fueling on each cylinder?
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