Whilst out competing on Bath Festival Targa Rally at the weekend I had an Engine running Issue which caused a retirement. At the start of Test 9 (up until which point the car had been running without any problems) as I dropped the clutch the engine died and then with continued cranking wouldn't start again, after around 10s the engine did fire but would not rev at which point I put the second fuel pump on but again the engine died when I tried to pull away. Finally the car did start again and the problem cleared allowing us to run over the 3 mile section without any further problems.
Then at the start of the next stage the same issue happened and again we got running but 1/2 mile up the road it finally stalled and wouldn't start, we checked all the ignition circuit connections and checked it wasn't something obvious then tried to re start after a lot of cranking it fired but would only just run at tickover and as soon as you apply any revs it would die, it was at this point we noticed that the exhaust was running red hot at which point we turned it off.
I thought it must e something either fuel or Ignition based and I have now checked the following to no avail
Engine Timing OK
Distributer hasn't moved
Fitted New Coil
Rotor and cap look good
Good Spark at the plug
Plugs look black (this could be due to it only just running at tickover I guess)
Fuel Pumping to the weber carb ok.
Main Jets Not block
Fuel spraying down through the chokes when operated.
No visible damage to the exhaust system
Any advice would be greatly appreciated! I'm planning on removing the exhaust post manifold to see if it will run and will strip the carb fully tonight!
Thanks In Advance
Bookmarks