[TR] Missing at high revs TR4A

[Chris Buckley]

Hi Listers,
  Still not much progress I am afraid.
  Have now checked the compression which is 100%. Now I am finding it seems to miss worse than before but improves greatly when I pull out the choke so seems it could be fuel after all. I disconnected the fuel line before the carbs and turned over the engine to find a strong flow from the fuel pump.
  What next?
  TIA
  Chris

Chris Buckley <chris.buckley51 at yahoo.co.uk> wrote:
    Hi Listers,
  I have now changed the sooty plug and going for a test drive tomorrow. It was definitely sooty rather than oily. Regarding the PCV valve, I have installed a rocker feed kit as sold by Moss and was wondering if that could be the cause of a lot of oil being pushed through the valve and being dumped into cylinder no 3 causing it to make the plug sooty.
  all advice greatly appreciated,
  Thanks,
  Chris
  > When I got home I removed HT leads in turn and found that removing the lead from number 3 cylinder made the least difference to the idle.
> I then checked all plugs and found No 3 to be 'sooty' while all the others were clean burnt light grey colour.

. I would also check the soot 
on the plug--does it feel dry and fluffy, or oily? If the latter, it's 
time to do a compression check. If the former, the plug could be firing 
intermittently, or, there might be a slight vacuum leak at the manifold 
at that cylinder.

    
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