[mech63s]

I need help badly. It has good compression, new plugs, timing is right on,.
THe problem is that is has bad gas mileage, runs rich, and pops out the carbs mainly from the #2 cylinder. It Idles great, starts popping at about 2500-300 rpm.

 

[2580]

hi mech63s, try taking the vacuum slides off the top of each carb to see if one or more of them are sticking. they need to slide freely with the help of vacuum to allow air to enter the cyl smoothly.

 

[mech63s]

I have gotten running alot better, I used my might vac since it had a gauge on it to dial the carbs in a little closer. That seems to have helped alot, but it is still popping now from the #3 carb. But now I noticed the battery getting weak and did some troubleshooting and found the voltage regulator bad. That could be attributing to my problems. It the coils aren't getting almost 13 volts then spark could be weak to begin with.