Quote:
Originally Posted by Vegas69
One degree of fluctuation isn't worth thinking about. Battery voltage or a slightly different signal to your light could easily cause the difference. You can verify the timing is reacting properly with your timing light. If it is, I'd rule it out. Especially if the drivability problem is present. A fully warmed up engine vs. colder engine absolutely will change a stumble. Everything I advise you is from experience.....
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Quote:
Originally Posted by intocarss
Then I agree with Todd's posts.
Blubbering = to much fuel
Dead spot = not enough fuel. ie squirters or accelerator pump or cam. Is the accelerator arm adj properly?
You could try and push the primary accelerator pump arm almost all the way down by hand just as you crack the throttle from idle or a split second before, which will send a bunch of fuel in. If it doesn't have a dead spot then this will tell you it's lack of fuel right at the hit. Just and old school trick. YES eng temp can effect and or make the stumble too
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Thanks guys.
I've made sure the thermostat has opened and it up to temp before any tuning adjustments.
I'll say it acts like a lean bog, similar to the warm up throttle response with no choke system.
I'll toss a green pump cam on and see what happens.