by Mastiffen » Sat Jan 26, 2008 1:49 pm
Back to the scheduled program. I have the carb back in, with no parts left on the table and clean as a whistle, and about as efficient. OK, that was a bit too harsh. It's now idling pretty well (after a bit of toying with the mixture screws, one turn out is the starting point, two more out made it pretty good), and it never dies when I release the pedal, even after a full acceleration and hard breaking. That was a problem before.
And on full pedal it kicks as it should, with no hesitation. But it did that before as well.
The problem is that the midrange is off. The pedal in the middle means either just hesitation for maybe five seconds, and then it'll get better, or it means full hesitation, and it doesn't get anywhere.
Could this be the float? When I measured it I found both the float drop level and float level totally off, with as much as 50 %, both with larger gaps then I have now. I now have what should be the correct levels according to the shop manual.
I had much of the same problem before I started the carb rebuild as well, so I'm wondering if it may be something else. Any vacuum leak should give me grief on idle more than midrange, if I'm correct. And I have the correct ignition timing ( think), and I can see that it moves up when I pull the lever to increase RPM. But I think the problem got worse when I changed the plug wires, the distributor cap, the rotor and adjusted the timing. Is it possible that I'm adjusting timing on the wrong cylinder? I'm using the front cylinder on the driver's side.
Is there anything else I have overlooked, or should I try to disasemble the top of the carb again and adjust the float level?
I'm really Mastiff - but that was taken here...
'78 Oldsmobile Starfire V6 (soon to be V6 Turbo)