Team Camaro Tech banner

1 - 20 of 22 Posts

·
Registered
Joined
·
330 Posts
Discussion Starter #1
Last night i connected my gas pedal linkage to the carb and to the Blower butterfly, after making couple position changes (just link hole changes)nothing to the carb or adjustments. The reason for this was because the butterfly on the blower was getting stuck and flipping over at full throttle. Anyways, i started the car. It started fine, after about 30 seconds of idle the car started to slowly die down and it turned off. Tried to started it couple of times and no luck. After many attemts the battery ran dry. I jumped the car and it finally started but ran for a short time and turned off again. I do not think it has nothing to do with the carb because i did not change anything on it. Im battery is completely dead right now.i will replace it with a different one tonight, but i think my alternator took a shi%. What do you guys think the problem might be?
 

·
Premium Member
Joined
·
2,393 Posts
You have a bug catcher style scoop on top of your carb. The butterflys on the scoop are probably closing too far. Open them up and it should be fine.
 

·
Registered
Joined
·
953 Posts
I'm not sure if you have enough info in your questions to figure out the problem. What did you do to the car? Was it running okay before? Also, if the battery is completely dead and you think your alternator is also dead, that could be your problem. Not enough voltage for the ignition system. What ignition are you running? Also if you think it has something to do with the scoop just take it off and see if it runs.
 

·
Registered
Joined
·
7,795 Posts
Otherwise, It ran out of gas !
 

·
Premium Member
Joined
·
2,393 Posts

·
Registered
Joined
·
953 Posts
Okay, I checked out the thread. There a few things you'll need to check to see if this is fuel or ignition related or both. You really need to address the battery and or alternator issues. If they are both dead you're kind of wasting you time checking other things. The MSD will not function very well on really low voltage and could be the problem or contribute to it. What is the fuel pressure gauge reading while this is going on? When the car dies does what does the fuel pressure look like? Is it low before the car starts to die? Does it gradually drop with RPM when it's cutting out? Did you add this blower recently or has it always been on the car? While the car is running how much vaccum in the boost gauge reading?
 

·
Registered
Joined
·
330 Posts
Discussion Starter #7
The blower has always been on the car and never had this happen to me.It was running great before. I took out the blower and filter, and when i start it i see the fuel squirting in the carb. So i know im getting fuel to the carb and the gage is at 5-6 psi. At idel, i get about 5 psi boost. But now it doesnet run long enough to see what kind of numbers im getting. I will try the new battery first.
when i jumped the battery, it felt like the alternator was not charging the battery and the car dies because the battery would just drain out.
The rpm drops slowly and starts to bog till it turns off. I also noticed the fuel started leaking from the carb cuz it was not burning it.
 

·
Premium Member
Joined
·
2,393 Posts
The blower has always been on the car and never had this happen to me.It was running great before. I took out the blower and filter, and when i start it i see the fuel squirting in the carb. So i know im getting fuel to the carb and the gage is at 5-6 psi. At idel, i get about 5 psi boost. But now it doesnet run long enough to see what kind of numbers im getting. I will try the new battery first.
when i jumped the battery, it felt like the alternator was not charging the battery and the car dies because the battery would just drain out.
The rpm drops slowly and starts to bog till it turns off. I also noticed the fuel started leaking from the carb cuz it was not burning it.
Does it run OK without the scoop?
 

·
Registered
Joined
·
330 Posts
Discussion Starter #9
No, i took it off. Does the same thing.
 

·
Registered
Joined
·
953 Posts
It sounds like too much fuel is choking it. You say you see gas "squirting" in the carb? Is that at idle? Or are you seeing a normal amount of vaporized gas being drawn through the carb into the blower? It shouldn't be squitring the fuel at idle. The fuel leaking from the carb may also be because there's too much flowing. Fuel doesn't burn it in the carb so it's not that it isn't being burned causing the leak.

.
 

·
Registered
Joined
·
330 Posts
Discussion Starter #11
Ok, last night i got a new battery and also took in the alternator to get it checked. Well, the alternator failed the test and I had to buy a new one. Put them on the car and still have the same problem. It cranks, but will not turn over. After i turn the ignition to off position and check the inside of the carb and i notice excessive amount of fuel dripping down into the throttle from the booster and not the squirter. Oh and its in the secondary ( the back).
I tried to adjust the fuel/air mixtures and idle screw but nothing seems to work. I do not know too much about carbs. Does anybody know what might be coussing to much fuel to the back of the carb when trying to start the car? or is this normal, and there is another issue someplace else?
 

·
Registered
Joined
·
330 Posts
Discussion Starter #12
Can this be coused by the spark plugs?
They are fairly new, but when i pulled it out couple of weeks ago i noticed they were fould with black smoke and some oil.
 

·
Premium Member
Joined
·
2,393 Posts
Ok, last night i got a new battery and also took in the alternator to get it checked. Well, the alternator failed the test and I had to buy a new one. Put them on the car and still have the same problem. It cranks, but will not turn over. After i turn the ignition to off position and check the inside of the carb and i notice excessive amount of fuel dripping down into the throttle from the booster and not the squirter. Oh and its in the secondary ( the back).
I tried to adjust the fuel/air mixtures and idle screw but nothing seems to work. I do not know too much about carbs. Does anybody know what might be coussing to much fuel to the back of the carb when trying to start the car? or is this normal, and there is another issue someplace else?
There is probably something stuck in the needle and seat on the secondaries. Pull it out and clean it.
 

·
Registered
Joined
·
330 Posts
Discussion Starter #14
What needle are you talking about Steve?
You suggest i take out the whole carb and clean it.
Is there anything I should know about cleaning a carb. What to stay away from and what parts to spray down. Do i have to open it all up and get into the jets and all that or just a jeneral spray down.
I like to save money and work on my own car. Is this something a proffesional should handle. Messing with the carb kind of scares me.
I like to get it started and driveable to get it to the dyno tune shop.
 

·
Premium Member
Joined
·
2,393 Posts
See the picture below, I circled where the needle and seat are removed from. The screw on top locks it in place. Just break the screw loose on top and then turn the nut to unthread the needle and seat assembly from the bowl. I have also included a pic of the assy. Just blow through it to dislodge any dirt and reinstall. Make sure you reset the float height by removing the sight plug on the side of the bowl and adjust the nut until fuel is level with the sight plug hole. Make sure you tighten the screw on the top of the needle & seat and reinstall the sight plug.

If this does not stop the fuel you may need to replace the needle and seat.


 

·
Registered
Joined
·
330 Posts
Discussion Starter #16
Thanks Steve. I will give that a try.
 

·
Registered
Joined
·
2,292 Posts
Thanks Steve. I will give that a try.
Great advice from Steve and nice pics.Just would like to point out that the primary needle and seat is circled and you posted that the secondary boosters are dripping.Same procedure..simply apply it to the rear of the carb.Your spill height is compromized..junk in the needle valve,high float level or a sunken float.
 

·
Registered
Joined
·
330 Posts
Discussion Starter #18
on Saturday i changed the needle and seat and tried to start the car and it started spilling fuel from the rear of the carb. So i took out the carb and did a complete rebuild with a holley rebuild kit from the parts store. Changed all the gaskets needles and cleaned the whole thing. I found a piece of teflon tape in the needle and a piece of aluminum by the metering block. I put it all together and put it on the car. The car started, i did some adjustments to the fuel and air needles, the idle curb and fuel level in the bowls. When i went to the rear of the car i noticed a lot of fuel just pukeing out of the driver side exhaust. I know it getting too much fuel, but what can i adjust first to stop this. I cant leave the car on too long to tune some more because of the amount of fuel from the exhaust. What can cause this problem.
 

·
Registered
Joined
·
330 Posts
Discussion Starter #19
anybody out there...lol.
What can cause the fuel to drip from the exhaust?
Would the gas go into the oil pan if this is happening?
 

·
Registered
Joined
·
2,292 Posts
anybody out there...lol.
What can cause the fuel to drip from the exhaust?
Would the gas go into the oil pan if this is happening?
I highly doubt raw fuel is dripping out your tailpipes.:noway:
Most likely blackened condensation from residual soot in the exhaust that needs to be blown out with a full throttle pass in a safe and legal environment..example..merging into expressway traffic/on ramp getting up to speed.
 
1 - 20 of 22 Posts
Top