should run longer then 10 seconds on the bowls if you are@3k when you kill the pump unless its dumping gas in the motor imoJust tried this. Shut the fuel pump off while at the trouble rpm range. It continued to pop for 10 seconds and stalled
And you’ve removed the air cleaner, got it running and brought up the rpm’s to the trouble range and eyeballed as best possible that there’s no excessive fuel dribbling, bubbling out dumping etc from the bowl vents, or etc?Just tried this. Shut the fuel pump off while at the trouble rpm range. It continued to pop for 10 seconds and stalled
And you’ve removed the air cleaner, got it running and brought up the rpm’s to the trouble range and eyeballed as best possible that there’s no excessive fuel dribbling, bubbling out dumping etc from the bowl vents, or etc?
This. The PV gasket will cause this.Recheck the floats. Set to bottom of sight glass. Then remove carb and check the gasket under the pv. Make sure it's properly installed and not damaged.
Just for the heck of doing it, start it up and cut the lights out and look closely at the the plug wire connections on both ends for sparks to ground on the plug side or arcing between cylinders at the distributor. Costs nothing and only takes a minute.
This. The PV gasket will cause this.
Well that's good......and bad I guess. lol At least you've eliminated that.Thanks for the suggestion RRR,
With the lights off in the shop, there was no sign of arching anywhere under the hood. The coil is mounted inside the car, I checked there and where the coil wire connects to the moroso bulkhead feed though. Pitch black.
Reving in the shop mostly. I did take it for a mile ride down our road and back and it acted the same way. Videos attached.Are you actually test driving the vehicle, or just revving it up in your driveway with no load ?
What is your fuel pressure when it popping?Reving in the shop mostly. I did take it for a mile ride down our road and back and it acted the same way.
5.5 lbs currently. I've slowly adjusted fron 5 to 7 and tested the throttle every half pound with no change.What is your fuel pressure when it popping?
It strictly a drag car but I still may have a chance to take it to the track on a test and tune night.Listened to it twice hard with open headers i dont hear much
take it out and punch it
if you are going to street drive it put the exhaust on it then play with it
The jets are currently 72. It was a size I chose to start with. The plugs read that it's running rich. Black and wet. When I removed all the plugs during a compression test, fuel sprayed out of the plug holes the first few cranks. I brought the rpms up to the break up point and shut off the fuel pump. It popped until it ran out of fuel.Open headers can lean the mixture. Try going up two jet sizes.
The jets are currently 72. It was a size I chose to start with. The plugs read that it's running rich. Black and wet. When I removed all the plugs during a compression test, fuel sprayed out of the plug holes the first few cranks. I brought the rpms up to the break up point and shut off the fuel pump. It popped until it ran out of fuel.
That carb is black. That’s a reversion issue. Did you degree the cam? I had to ask but that’s bad.
Also, if it has so much fuel going through the engine that it blows out of the plug holes, you need to get some fuel out of it pronto. You’re killing the rings.
A 72 jet doesn’t sound outrageous but it’s getting fuel somewhere.
I can’t hear what you’re hearing but being pig rich will make them pop and bang and miss.