We discovered that the 10A fuse on the ignition circuit providing power

to the igniters had blown.  After replacing the fuse, we were getting

flashes on the timing light!  I am concerned about why the fuse might

have blown, but so far, it is holding up.

 

Bill;

I don’t recall your setup, but with the EC2 and LS1 coils there will be spikes that will blow a standard 10A fuse.  You can try a 10A ‘slow blow’, but I would suggest using 15A, preferably a SB. I’m assuming you have at least 16 or 18 AWG wire on the power circuit.  And we don’t want to re-open the discussion of fuses vs circuit breakers.

 

Now the engine starts, but only seems to want to run at high revs.  It

also seems to run better when cold start is on.  I have not figured out

if this is just because the engine is cold, or if the condition is

chronic.  The temp outside at the time was in the low 70s.

 

Do you have a prop on?  Sounds like the mixture setting is too lean, and with the ‘cold start’ on the mixture is doubled and too rich, accounting for the flames.  Although with only a 3” header, you might see flames even when the mixture is correct.

 

That 3" straight out exhaust note is a tad harsh!  especially

when the engine only wants to run at high revs!

 

I think you’ll want to consider getting some sort of exhaust system on there to protect your neighborsJ.

 

Al G