[Healeys] Ruff running, bucking car

[Per Schoerner]

Hi
Now, this happens because the fuel boils in the float bowls and fuel 
lines closest to the engine. After running for half a mile or so the 
engine starts to run normally again, doesn't it? This is because the 
wind cools down the engine compartment again. Nothing you did changed 
anything really, apart maybe from changing the needles. The only remedy 
in this case is to keep the fuel cold while the engine is stopped. Have 
seen people installing electrical fans that blow air on the fuel lines 
and carbs, don't know if it helps. It puzzles me that the temp gauge 
didn't show more.
This is not related to an engine that runs good when cold and bad when hot.

Per in Sweden

warthodson at aol.com skrev 2011-11-20 22:07:
> This discussion is very interesting to me because a friend had almost exactly
> the same problem on a newly restored, no corners cut, BJ7. The car is stock
> except that the engine was rebuilt to BJ8 specifications including the cam&
> carbs. The engine does not ping on premium fuel. We believe the compression is
> under 10:1.
> His car would run great when it was cold&  even when warmed up, but if he
> stopped for a few minutes (like at a gas station or convenience store) it
> restarted fine but would run rough&  buck so bad it was almost undriveable.
> The water temp. was only 180 degrees&  this was verified with a thermometer. I
> know what this sounds like, but wait. The fuel line is in the stock location.
> The carb spacers&  head shield are all installed as original. The car does not
> have a header. We double checked the timing, readjusted the carbs, retorqued
> the head, checked the valve adjustment, checked for air leaks, electrical
> wiring issues, did a compression test&  a leak down test, etc. Over a period
> of time we replaced (one at a time) the spark plugs, the fuel pump, the coil,
> the distributor cap, ignition wires, the Pertronics, the entire distributor,
> the carbs with another set of recently rebuild carbs&  a different intake
> manifold. None of which improved the situation. After we ran out of ideas, the
> car went to a shop where it spent almost two months. The shop eventually
> replaced the stock BJ8 needles with the rich BJ8 needles&  the problem seems
> to have improved slightly but is not gone. I will get a copy of the shops
> written report&  post a summary of it hear in the next few days.
> Gary Hodson