willcolumbine Posted July 3, 2008 Share Posted July 3, 2008 I'm on the home stretch recomissioning my car but I've come upon a few annoying problems that I'm having difficulty nailing down!Firstly my carbs are really starting to hack me off because the float chambers keep leaking from the overflow! I've got a repro fuel pump, malapassi regulator, 2 filters between the tank and the carbs and ball type valves in the carbs. No matter how the regulator is adjusted fuel still pours from the overflow holes on the chambers. Anyone got any ideas?Secondly, my clutch system seems to be loosing fluid and is always spongey. I've got a new master cylinder, hose and the slave cylinder has less than 4000 miles on it. Theres no sign of a leak anywhere obvious but when I took the slave off for inspection there were rub marks all over the cylinder wall. Is that normal? It bleeds alright but as soon as I use it a few times (and have replaced the interior) is goes spongey again. Any suggestions?Cheers guys! Link to comment Share on other sites More sharing options...
CharlieB Posted July 3, 2008 Share Posted July 3, 2008 Replace the rubber fuel hoses if they're a bit old they can break up inside & cause problems. Fit some standard needle valves?Oh & make sure the valve seats are er... seated properly or the fuel can go around. Link to comment Share on other sites More sharing options...
DaveKent Posted July 3, 2008 Share Posted July 3, 2008 one of the most common problems nowadays is fuel spilling out of the carbs because the needle valves don't shut off properly. changed mine about four times using different types of new ones. in the end i used a pair of old ones from a couple of mini carbs and problem solved. is this anothe example of us being sold poor quality new parts i wonder? Link to comment Share on other sites More sharing options...
Richard B Posted July 3, 2008 Share Posted July 3, 2008 Jessica and Alison are both having this problem with the SU's on their Heralds!Aghhhhh! :'( Link to comment Share on other sites More sharing options...
Clive Posted July 4, 2008 Share Posted July 4, 2008 Sounds like you have the grose valves? Never tried them, but have heard many stories similar to yours, and fitting std needle valves cures it. Makes you wonder why they bother selling the "new" type!Clutch, bleed nipple above the pipe I hope. Sounds like some air getting in. But where?? May be a case of changing cylinders again. Have you kept the originals? are they servicable with hone with fine wet+dry and a reseal? may be worth a try.Clive Link to comment Share on other sites More sharing options...
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