Reply to "Holley carburettor adjustment needed"

rene4406Member

I checked the powervalve "by mouth" and it is not destroyed, probably because my carburettor has a protective valve.
I closed the secondary a little so that the progression slot looks like a square.

I increased the lead.

The engine only starts by screwing the idle screw on the primary hands almost fully, when it is running I can loosen the screw up to 1400/1500 rpm, below there is backfire and the engine stalls.

At 1500 revs it takes 36° in advance with the depression connected, backfire below and the engine stalls

The depression is 16 inches, which seems like a lot to me with a cam that has a 285° intake

The engine accelerates slightly when I remove the vacuum gauge and therefore create an additional air intake.

8/29/239:04 AM

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