I just change a carb and now the motor will not fire.

Both bowls have fuel. I have spark. Motor just turns over and over.

The glass fuel filter I have shows fuel in what seems to be squashing aournd it in.

I puzzled.

Is the carb receiving fuel??? (take off air-cleaner and look inside carb and pull on the linkage...you should see it squirt).
Maybe your flooding out the carb?? (does it smell "gassy"?...if so petal to the metal while starting).
You didn't remove the distributor right?? Give us some more info. to work with here.

Yes it getting fuel. You pull on the linkage and you can see the squirter squirting fue.

Distributor has not been moved.

Don't believe I flooded it out.

Once time I tried to start it cranked but shut off because I forgot to put the vacuum hose on the back of the carb to the brake booster.

Carb does not have a choke at all. The blade has even been removed.

What other info do you want?

I fixing to head out to services.

What carb did you take off and what did you go to?

Took off a 670 Holley Street Advenger and put on a Holley 3310-3. I used the Street Advenger for break in since it has been ran and then switched to the Holley 3310 a week later.

Make sure you're getting fuel to the carb from the pump first by disconnecting the fuel inlet hose to the carb and have someone turn over the engine while you hold the hose in a can or jar. If gas is pumping to your container than put the fuel line back on the carb, crank over the engine and check to see if the carb is pumping fuel when you work the throttle. One of these two items is more than likely your culprit. Let us know your findings.

I should of posted this first, but when trying to figure this out this afternoon. I did disconnect the fuel line at the carb and it was under a little pressure, fuel did come out.

Fuel is being pumped to the carb. Fuel is coming out of the squirter.

I got it fired but it was running really rough. Like on 7 cylinders. I shut it off and it will not refire. I sprayed some water on the headers. Both #1 and #2 pipes were not as hot.

Seems like flooded out.

Is there a internal carb problem?

your throttle linkage isn't too tight causing a slow, steady stream to come out is it??? Check all of the small things that you may have overlooked...pull the plugs, clean 'em up and start it up...remember to start a flooded carb, it's best to put the petal to the metal and hold while trying to start. good luck and let us know...

Not sure what the problem is but at least we do have it narrowed down to the carb.

I don't think it is too tight. Heck its not as tight as the other carb that was on it.

pull out the plugs from the cold cylinders, see what they look like. 1&2 are adjacent in the dist cap, maybe you bumped it or something? make sure they're not reversed in the cap.

They were both black with fuel on them. Wires are in the correct place.

are all the plugs wet with fuel? the carb may have gotten a tiny POS in the needle/seat assembly, running over, flooding the engine.

are all the plugs wet with fuel? the carb may have gotten a tiny POS in the needle/seat assembly, running over, flooding the engine.


Not sure.

The needle and seat assembly is brand new.

Did you by chance put teflon tape on the fuel line fittings, anywhere in the system, when you put the new carb on? A new needle and seat doesn't guarantee that something won't get stuck in it. :noway:

No teflon tape.

I baffled about this.

Update:

I got it fired this morning.

Idle OK and seem to get better. #1 cylinder was not firing at first, but is doing fine now.

I have no fuel running through the squirter now. Nothing when you rev.

Fuel in glass fuel filter has alot of bubbles in it.

Took the line off and it was not under pressure as much as you would expect.

You could have a bad fuel pump. Last time I had one fail it was still pumping fuel if i disconnected the hose, but i could just put my thumb over the hose and stop it, had no pressure.

Thats been mentioned.

Funny thing is the this all started when I put the rebuilt carb on.

When I had the 670 on it. No problem.

I'm going to put it back on see if it does it also.

Update:

Switched carbs this morning. Same thing happen. Motor ran for like a minute or so then stopped.

Took the line off and noticed the pressure was very low on the line.
when cranking it over amount of fuel was very low!

Took the fuel pump off and took it apart and noticed that everything looked good. The diaghram had no cuts of anything wrong with it.

Got to looking at the fuel filter. Its a glass piece. Noticed I may have put it back together wrong or backwards. What a dumb move!!

I hope this is what was wrong with it!!

One of the first things I would do is get rid of that POS autozone special glass fuel filter. Those things are junk and have caused more problems for people than they have kept from happening.

Jeff

One of the first things I would do is get rid of that POS autozone special glass fuel filter. Those things are junk and have caused more problems for people than they have kept from happening.

Jeff

Agreed. Ask a friend of mine who lost his '83 C/10 pickup to one of those filters.

I hear about people with glass fuel filters all the time. I haven't seen a glass fuel filter for thirty years.

WHERE are you people finding glass fuel filters? They've been illegal for longer than I can remember.

Don't think it is really glass, but it looks like the older ones. I got it at the local auto parts store.

Any way it ain't pumping any fuel now!

I am stumped!

Is there a way to tell if a pump is bad by looking at it!!!

Oh yeah, how did he lose his truck?

Got plenty of gas in the tank??? Not trying to be a wise ass, jast asking:beers:

Yep. Little under a 1/4 tank.

Anyone heard of a rebuilt carb doing in a fuel pump?

Yep. Little under a 1/4 tank.

Anyone heard of a rebuilt carb doing in a fuel pump?

Nope. The stock pump should be in the 5 to 6 pound range and work just find. You could test it off the car and see if it will pump fuel. There has been the odd case of the fuel pump eccentric on the cam getting whiped out, fairly rare in stock motors.

Nope. The stock pump should be in the 5 to 6 pound range and work just find. You could test it off the car and see if it will pump fuel. There has been the odd case of the fuel pump eccentric on the cam getting whiped out, fairly rare in stock motors.


Good Lord, I hope not.

this is a much stock motor. 427, 9.2 compression, and a Voodoo 256.

How do you test it off the car?

Oh yeah, how did he lose his truck?

Fire. Burned the truck beyond help.

I do have one of those filters around, but only use it to diagnose fuel systems. Works great on return lines to see if the fuel is aerating, getting bubbles in the system. More of a problem in small diesels with injector cups in the heads.

Speaking of bubbles. The glass filter does show the fuel swirling around with bubbles in it, when it does get into the filter.