08-11-2017, 08:32 PM
(This post was last modified: 08-11-2017, 08:37 PM by Special Bits.)
I agree with Alan, something is causing the mixture to go weak by the sounds of things.
SU carbs are not prone to blockages, but giving the internals a blow through with an air line is worth a try.
Check that the float hasn't got a puncture and is therefore floating low, shake it, to see if there is fuel in it.
Re set the float level.
Use a damp rag to wrap around each inlet joint in turn to check for leaks, with the engine running, probably a two person job.
As with anything like this, do one thing at a time, so you know which one fixed it, or not, as the case may be.
Stuart
ps, the float low would cause it to be rich, not weak....
Does it run and rev properly with a bit of choke?
SU carbs are not prone to blockages, but giving the internals a blow through with an air line is worth a try.
Check that the float hasn't got a puncture and is therefore floating low, shake it, to see if there is fuel in it.
Re set the float level.
Use a damp rag to wrap around each inlet joint in turn to check for leaks, with the engine running, probably a two person job.
As with anything like this, do one thing at a time, so you know which one fixed it, or not, as the case may be.
Stuart
ps, the float low would cause it to be rich, not weak....
Does it run and rev properly with a bit of choke?