Hi everyone, hope someone can point me in the right direction.
175cc engine completely rebuilt, GP crank, 12v electronic etc. Old SH1/20 carb fitted.
It ran fine until one day as I was approaching some traffic lights it died on me. I couldn't get it to start for the life of me, so pushed it into a car park. Then I noticed that fuel was pi**ing out of the carb. Took the carb off, checked jets (all ok), float was lifting ok and no holes in it. I wouldn't mind but I'd only done just short of 30 miles on the rebuilt engine!
So, anyone have any ideas please? I'm tempted to scrap the old carb and buy a new one - Scootopia or Jetex?
Thanks in advance guys - Andy
New problem with carb
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check that the float is not binding and is free to move on the pivot pin .
Hold the carb up vertically with the fuel bowl off and blow into the fuel entry pipe whilst lifting and lowering the float.
Probably a bit of debris blocking the float needle valve seating properly
Also probably worth checking that the choke valve is fully seated and the choke cable is not under strain , caught up or bent sharply increasing the fuel delivery
Hold the carb up vertically with the fuel bowl off and blow into the fuel entry pipe whilst lifting and lowering the float.
Probably a bit of debris blocking the float needle valve seating properly
Also probably worth checking that the choke valve is fully seated and the choke cable is not under strain , caught up or bent sharply increasing the fuel delivery
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- Main scooter: Lambretta Bitsa 175
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johnny650 - fitted refurb kit and checked everything but after that the choke plunger wouldn't work, bought new cable, lever etc. and it still wouldn't work so I've given it up as a bad job. Just pissed me off. Carb is still in garage and scooter is outside. Sorry about the thanks but after all that I just lost interest. So, thanks for replies guys. Sorry about delay. Maybe I'll have another look at it some time...…..