Sunday, March 06, 2005
Idle mixture
Over the last few days I've refitted the clocks and headlamp. I also had to replace the bolt acting as ground for the transducers and front electrics. The screw was tapped and inserted from inside so that cables could attach on the left side of the frame. The only problem was that the bolt end and nut stopped the petrol tank seating. So, I've put the bolt in from the left and fitted the cables inbetween the frame downtubes. Actually it looks a lot neater but is probably going to attract mud.
That was all so good, but the engine didn't want to start. Inspection of the plugs showed them to be black with carbon. I tried wirebrushing them which allowed the engine to restart, but they fouled quickly and the engine wouldn't idle when hot. Sounds rich! I tried turning the idle screw anti-clockwise but that had no effect. Then I remembered that I'd fitted an O-ring on the idle screw that appeared on the exploded diagram and was in the rebuild kit. Strangely there wasn't one in nay of the 4 Kanguro carbs that I've got. When that was removed things got a lot better and it became possible to start the engine more predictably.
It still wasn't right though. I put fresh plugs in, nice and clean and properly gapped and after a few hours tried a cold start. Seemed fine, then it faltered and woudln't pick up. What was wrong? After much worry I found that the dribble of petrol I'd put in the tank had gone...
Over the last few days I've refitted the clocks and headlamp. I also had to replace the bolt acting as ground for the transducers and front electrics. The screw was tapped and inserted from inside so that cables could attach on the left side of the frame. The only problem was that the bolt end and nut stopped the petrol tank seating. So, I've put the bolt in from the left and fitted the cables inbetween the frame downtubes. Actually it looks a lot neater but is probably going to attract mud.
That was all so good, but the engine didn't want to start. Inspection of the plugs showed them to be black with carbon. I tried wirebrushing them which allowed the engine to restart, but they fouled quickly and the engine wouldn't idle when hot. Sounds rich! I tried turning the idle screw anti-clockwise but that had no effect. Then I remembered that I'd fitted an O-ring on the idle screw that appeared on the exploded diagram and was in the rebuild kit. Strangely there wasn't one in nay of the 4 Kanguro carbs that I've got. When that was removed things got a lot better and it became possible to start the engine more predictably.
It still wasn't right though. I put fresh plugs in, nice and clean and properly gapped and after a few hours tried a cold start. Seemed fine, then it faltered and woudln't pick up. What was wrong? After much worry I found that the dribble of petrol I'd put in the tank had gone...
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