My new motor runs and isles fine. I can rev it up to 4000 or better and still runs great. Just took it out on the road for the first time and it misses really bad. Almost like its flooding itself out. Any ideas what it could be. Thanks
When I first read the post title, I thought you had a new motor and you couldn't find it. That's how stupid I am.
No not stupid I posted it stupid. Lol. Carb is a good 800 Holleydouble pumper. I have fuel pressure set at 5 1/2 to 6 pounds
Well, that's all well and good. I have yet to see a Holley come out of the box ready to go. I just put a Quickfuel 950 on my 71 and its been apart three times for re-jetting, high speed bleeds and idle feed restrictor changes. The carb fell on its face out of the box. You may have a lean miss. You need to install a wideband O2 to see what that carb is doing.
An oxygen sensor. It tells you the air fuel ratio as you drive the car around . So you can put the engine under load and see if its going way lean
It's an air/fuel meter. Inline with your exhaust. Can tell you if it's running lean or rich...or just right.
Romel, can you tell the difference between an outright miss, and the car nosing over from lack of fuel? If it is nosing over, I would check fuel pressure before condemning the carburetor. If fuel pressure is good, look at float level. If that checks out, you'll need to check the exhaust with a wideband O2 sensor.
Thanks guys. We figured it out. When it was sitting at the shop someone stole the jet or metering valves out of the carb. Would explain why it was leaking to begin with. Larry I havea question for you. The guy who timed my car has a brand new snap on digital timing light. Is it possible to do all the timing without disconnecting the vac advance. Thanks again
No, you have to disconnect the vacuum advance, then work with the initial + mechanical advance to set the WOT timing. After you have that straightened out, then you connect the vacuum advance. Depending on when your mechanical advance is all in, you may need to modify the vacuum advance. I explain all of this in the Power Timing thread.
