Ian Cooper Posted December 30, 2022 Report Share Posted December 30, 2022 (edited) My GT6 Mk2 was stood for a couple of months, in a freezing garage, and I thought it would be an idea to prime the carbs using the pump lever. I may have overdone it a little as fuel started to drip from the air cleaner box. However on turning the key the engine fired up instantly, which it never does, usually two, three four goes (std CD150s). When running I could not see any fuel leakage, is it possible to pump fuel passed the carb float chamber valves to cause the leakage? Edited December 30, 2022 by Ian Cooper Auto correct got it wrong Link to comment Share on other sites More sharing options...
Jeffds1360 Posted December 30, 2022 Report Share Posted December 30, 2022 I would say YES. When I tried a new pump a few month back, the same happened and fuel ran out from under the carb. It turns out the pump was pushing nearly 5psi and you only need 2. that overcame the valve and caused the flood Guess you pumped too hard ! Link to comment Share on other sites More sharing options...
NonMember Posted December 30, 2022 Report Share Posted December 30, 2022 If the pump is correct and to original factory spec then no, you can't. However, nearly all after-market pumps these days have too strong a spring and thus put out too much pressure. If you have one of those, bodged with a spacer to reduce the lift (which does reduce the pressure as a side-effect) then the manual lever still has the full stroke and will get the excessive pressure. Link to comment Share on other sites More sharing options...
johny Posted December 30, 2022 Report Share Posted December 30, 2022 But its not a bodge as using packers is recommended in one of the Triumph manuals.... Link to comment Share on other sites More sharing options...
Pete Lewis Posted December 30, 2022 Report Share Posted December 30, 2022 but do kellogs make as good packers as Aldi cornflakes packets ???? Pete Link to comment Share on other sites More sharing options...
johny Posted December 30, 2022 Report Share Posted December 30, 2022 Unfortunately Triumph didnt say which boxes to use☹️ Link to comment Share on other sites More sharing options...
Chris A Posted December 30, 2022 Report Share Posted December 30, 2022 53 minutes ago, johny said: Unfortunately Triumph didnt say which boxes to use☹️ They'd have used whatever was kicking about at the time . . 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted December 31, 2022 Report Share Posted December 31, 2022 just to add dont forget the pump prime lever only works at best when the cam lever is on the heel of the cam or the prime stroke is restricted by the cam lever ho;ding the diaphragm on its down stroke a quick spin on the starter too reposition will help Pete Link to comment Share on other sites More sharing options...
Stratton Jimmer Posted December 31, 2022 Report Share Posted December 31, 2022 The answer to the original question is in my experience a definite yes. Pete's comments about the position of the cam lever sound right too as this is an effect I sometimes get with the GT6 but not every time. The cam position would explain this. Link to comment Share on other sites More sharing options...
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