Tyrone Posted June 9, 2011 Share Posted June 9, 2011 I started putting braided fuel lines in tonight. It's a bit of a pita, so I only got the the line from the out on the regulator to the feed on the carbs on. I turned the car over to make sure the work I had done was tight and bugger me if fuel didn't start belching out of the carb nearest the driver. I took the filter off and found this: here What have I done to the carb. The regulator is running at 3.0 psi. Link to comment Share on other sites More sharing options...
jonboylaw Posted June 9, 2011 Share Posted June 9, 2011 Needle valve is stuck by the look of it. Did you replace them? Link to comment Share on other sites More sharing options...
andy_h Posted June 10, 2011 Share Posted June 10, 2011 Stuck needle valve. Take top of carb off with gasket. Remove float from top cover being careful as the needle will fall out. Clean it all making sure the ball moves freely. Refit all and test I had same problem, dismantled just cleaned and all ok. Link to comment Share on other sites More sharing options...
elie boone Posted June 10, 2011 Share Posted June 10, 2011 If you had the cover off it's possible that the needle is stuckin the open possition just because it can drop to deep. If you mount the cover hold the float up for as long as is possible to avoid this or reajust the lower position for the float. Link to comment Share on other sites More sharing options...
Tyrone Posted June 10, 2011 Author Share Posted June 10, 2011 Nice to have a consensus on a tech item! I haven't touched the carbs so I was mystified when it happened. Thanks everyone. Link to comment Share on other sites More sharing options...
andy_h Posted June 10, 2011 Share Posted June 10, 2011 I hadn't touched mine when this happended either. Could have been crud from fuel. My carb bowl had some crud in it so it's worth cleaning these out while you've got the tops off. Do both carbs while you're at it too. Link to comment Share on other sites More sharing options...
Drumster Posted June 10, 2011 Share Posted June 10, 2011 When I rebuilt my carbs recently I was amazed just how much crud there was in the chambers, but then again, they hadn't been touched for nearly 10 years Link to comment Share on other sites More sharing options...
Tyrone Posted June 12, 2011 Author Share Posted June 12, 2011 The needle valve was replaced this afternoon and everything is fine. Link to comment Share on other sites More sharing options...
jonboylaw Posted June 13, 2011 Share Posted June 13, 2011 Link to comment Share on other sites More sharing options...
Molecular--Bob Posted June 13, 2011 Share Posted June 13, 2011 For the benefit of someone about to do a needle change, how did you get the pins out of the float pivots? It looks very fragile to me? Link to comment Share on other sites More sharing options...
Drumster Posted June 13, 2011 Share Posted June 13, 2011 Very carefully! Says he who carelessly broke off half of the split post when trying to do this. Later versions don't have a split post. Beware carb covers appears to be like hen's teeth. Having made the mistake on the first carb I very carefully tapped the pin with a small punch, just enough to be able to get a pair of pliers onto the other end and pull very gently. Hope that all makes sense? Link to comment Share on other sites More sharing options...
jonboylaw Posted June 13, 2011 Share Posted June 13, 2011 Same as Aeroscreens, tap the split pin through, just enough.... I think I used a bodkin needle. I bought a couple of Weber Carb Services kits off ebay (complete with needle valves) when I did mine. Link to comment Share on other sites More sharing options...
Tyrone Posted June 13, 2011 Author Share Posted June 13, 2011 You can get a pair of pliers on to the end of the pin and the shoulder of the pivot and squueze the pin out too. Link to comment Share on other sites More sharing options...
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