Also mate once you foul the plugs you may as well chuck them in the bin they never come back completely and you end up having to under fuel it to clean them. Its a common mistake to chase a stumble thinking it has wrong mixture still when its just the plugs are toast. Chuck a new set at it. If the stumble is just off idle try giving it more timing which will create more vac to pull some extra fuel in and open up the idle mixtures a bit, better to have the idle a little rough but have enough fuel to bridge the mains coming in.
Trav and i tested the fuel pressure last night. Steady at 5 - 5.5 psi. Pretty sure this rules out over pressure and flooding. Gave it a few hard revs and the floats we still constant at halfway across the sight.
I'd be cleaning that holley and sticking it back on as a test.
Yeah thats the next step. Going to down jet the quick fuel until it pings. I want to find out where the actual point is when the engine is too lean. Up to this point it has only operated at varying degrees of richness.
After that I'll clean out the holley and put that back on as a comparison.
If she still doesnt run properly after that I'll drive the car down to Waroona to my dad's cousin who is one of the best old v8 mechanics in WA. If he cant fix it then it simply cant be fixed and I'll either drive the car off a cliff or buy an EFI windsor off gumtree.
As a side note.. the QFT instructions say the float should be half way across the sight glass when the fuel is delivered at 6.5 psi. Last night we got a reading of 5-5.5 psi. QFT say the floats need to be set higher if the fuel pressure is lower than 6.5 psi.
Time for another one of Tony's stupid questions. What should be happening with the vacuum advance?
It appears the engine has 13-14 degrees initial timing, then about 34 when you check with a thumb over the vacuum hose. When the hose is plugged back in the timing jumps to around 55 degrees! Is this normal? My understanding was that the vacuum advance should die off as the engine speed increases. Is this only happening because the engine is free revving under no load?
What would be an expected amount of vacuum advance? I may adjust this right down.
The stops are for the mechanical advance. The dizzy has a built in limit of 24 degrees of mechanical advance. Trav put in the stops which limit to 20 degrees. Hence why it has 14 static and 34 total without vac. The vac operates independently to this it seems.
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