Squirting float overflow

[GT6]

On SU HS2 front float bowl, new floats needles and seats. Electric pump with max 3psi.

I was looking over the engine after a run and gave the engine a good rev up and when let off, a brief jet of fuel shot
out of the overflow hole (there is no guard over that one). At all other times it appears fuel tight and requires a
good amount of revs quickly and released before it happens.

What do you reckon is the cause?  

[Clive]

How is the fuel pressure controlled? and have you tested the actual pressure? I have heard of fuel pumps giving higher pressures than they claim. If a separate regulator I would drop the pressure down to 1-2psi, that will be plenty (you require no pressure at all really, just enough flow)

The cause is probably the "jolt" in fuel pressure as the demand shuts.

[GT6]

That sounds right Clive, no regulator fitted. Any recommendations for good regulators that control pressure and allow flow?

[Steve AKA vitessesteve]

I am using one of these on my TR7 to feed 2 HS6 carbs.

[GT6]

Just the thing, many thanks.

[GT6]

Just for completion, fitted the above reg and cured me squirts!

Matt Lewis racing where very helpful and shipped it out to N.Z. quickly.