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Old 05-03-2013, 09:31 AM   #1
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Why does my fuel filter

Fill all the way up with fuel? 2days ago it was more like 1/3 full and now the filter is practically drowning in fuel. What causes this? And I think this is whats causing my car to die out after starting it up and waiting for the choke to warm up the engine.
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Old 05-03-2013, 02:23 PM   #2
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Have you checked to make sure the float is not stuck (or sticking intermittently) in the carb? Seems like the filter would only stay full if the carb wasn't using the fuel.
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Old 05-03-2013, 05:19 PM   #3
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Have you checked to make sure the float is not stuck (or sticking intermittently) in the carb? Seems like the filter would only stay full if the carb wasn't using the fuel.
Haven't checked yet but i just read up on it and seems like an easy enough job. If it is stuck, which is better? Spraying carb cleaner in it and let it drain or take apart the carb and clean each part with the carb cleaner and then reassemble it? Would you recommending draining the carb first to see if that un-sticks the float?
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Old 05-03-2013, 08:29 PM   #4
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So I checked the sight plugs on both side to see if there was any fuel even in the fuel bowl and nothing poured out but when I removed the plugs, both looked like the picture below. Any suggestions? Also attached the carburetor number just in case someone here has better resources and can identify which holley I have and how I can fix it
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Old 05-03-2013, 08:37 PM   #5
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That's an idle mixture screw. You need to be cateful putting it back in. Read up on it and find out the base setting for it. Do not screw it in tight.
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Old 05-03-2013, 08:40 PM   #6
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That's an idle mixture screw. You need to be cateful putting it back in. Read up on it and find out the base setting for it. Do not screw it in tight.
How do I check the float without taking the carb apart? Should I just take off the float bowl and see if the needle is clean and free of debri?
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Old 05-03-2013, 09:29 PM   #7
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It's like your fuel bowl gets emptied out while initially starting and the fuel isn't getting up to the carb past the filter. You might check your fuel pressure.
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Old 05-03-2013, 10:37 PM   #8
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If the float is sticking (and that's an if) you will be time and energy ahead if you take it apart and address it now. If you have someone with some experience that can help you, you could probably rebuild it yourself. It might be better to have it done professionally tho so they can soak the carb to really clean it out.
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Old 05-03-2013, 10:45 PM   #9
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It's like your fuel bowl gets emptied out while initially starting and the fuel isn't getting up to the carb past the filter. You might check your fuel pressure.
That's exactly what it seems like that no fuel is getting passed my filter at all. I see how to check the fuel pressure but how do I increase it?
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Old 05-03-2013, 10:48 PM   #10
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That's exactly what it seems like that no fuel is getting passed my filter at all. I see how to check the fuel pressure but how do I increase it?
If your pressure is low, it's either a fuel pump going bad or a clogged fuel line.
The arm that activates the fuel pump from the engine can wear out on the end and not travel far enough to get good fuel delivery.
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Old 05-03-2013, 10:49 PM   #11
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Originally Posted by Aggiesrok View Post

If your pressure is low, it's either a fuel pump going bad or a clogged fuel line.
So should I try replacing the filter to see if that works?
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Old 05-03-2013, 10:51 PM   #12
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So should I try replacing the filter to see if that works?
Replace it and check your lines. It might be the fuel pump.
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Old 05-03-2013, 10:52 PM   #13
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Replace it and check your lines. It might be the fuel pump.
Sorry for being completely non knowledgeable on this but how exactly am I checking my lines?
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Old 05-03-2013, 10:59 PM   #14
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Sorry for being completely non knowledgeable on this but how exactly am I checking my lines?
You seem to get fuel to the filter. Pull it from the filter to the carb. But I would
change the filter first
Then check fuel pressure
Then fuel pump ( this is my guess, it's worn the arm and not getting enough stroke to get the fuel to the carb when it's running).
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Old 05-03-2013, 11:22 PM   #15
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Originally Posted by Aggiesrok View Post

You seem to get fuel to the filter. Pull it from the filter to the carb. But I would
change the filter first
Then check fuel pressure
Then fuel pump ( this is my guess, it's worn the arm and not getting enough stroke to get the fuel to the carb when it's running).
Alright I'll try replacing the filter as soon as I get home then if that doesn't work, ill try the pump
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Old 05-03-2013, 11:33 PM   #16
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My filter does the same thing i think its just trapped air working its way out
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Old 05-03-2013, 11:34 PM   #17
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My filter does the same thing i think its just trapped air working its way out
But I'm guessing your car still runs? While trying to warm up, I press on the gas and the car dies
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Old 05-03-2013, 11:36 PM   #18
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Hmm if i give it gas right way it dies i just let it run for a couple min and then I'm fine
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Old 05-03-2013, 11:43 PM   #19
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Hmm if i give it gas right way it dies i just let it run for a couple min and then I'm fine
Is that just part of a normal start up? I thought once the choke plate was completely open it should be good to go. I've let it run for about 5 min thinking the engine should be warm enough and then I go to gas it and that's when it dies on me. Then I try to start it again and it won't start back up
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Old 05-03-2013, 11:44 PM   #20
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Hmm no thats not normal you step on the gas and it dies?
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Old 05-03-2013, 11:47 PM   #21
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Hmm no thats not normal you step on the gas and it dies?
Yeah. I gas it, engine revs a quick second, and then trickles down to a stop. I just removed the filter and this is what comes out. Is this normal?
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Old 05-03-2013, 11:53 PM   #22
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No.. Haha i actually sorta had that problem i would give it gas and it would bog down for a second and then it would be fine go pick up like 5 of those filters and just keep an eye on it and when crap starts to bulid up in it put a new one in ive gone through about 5 or 6 filters in 600 miles and i need a new one now
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Old 05-03-2013, 11:54 PM   #23
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No.. Haha i actually sorta had that problem i would give it gas and it would bog down for a second and then it would be fine go pick up like 5 of those filters and just keep an eye on it and when crap starts to bulid up in it put a new one in ive gone through about 5 or 6 filters in 600 miles and i need a new one now
Thanks man. Hope this is the cure
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Old 05-04-2013, 12:00 AM   #24
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So which filter is better, this paper cartridge or the metal filters
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Old 05-04-2013, 12:01 AM   #25
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Iv always just used those clear plastic ones you can also change the one by the carb i haven't changed that one yet but I'm planing on it
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Old 05-04-2013, 12:32 AM   #26
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Iv always just used those clear plastic ones you can also change the one by the carb i haven't changed that one yet but I'm planing on it
Ok, so I changed it out and it fired up. Let it run a little while and gave it a little gas and it kind of hesitated but then ran normal. So far so good. Decided I would test drive it on my street, got out of the drive way and started pressing the gas and it halfway stalled so I had to gas it harder so it wouldn't die on me. Quickly turned back around and as soon as I pulled up in the driveway, it died once again. Does this now sound like a carburetor issue maybe not getting the right air/fuel mixture or something else?
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Old 05-04-2013, 01:11 AM   #27
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You're filter is nasty. Looks like rust in your tank, change it more often and keep an eye on it.
The new filter gave you more fuel and it starts, but acts like before only it runs a little better. So it seems that you are still starving for fuel. It's running lean still. It could the carb needs cleaning or adjusting or still could be a fuel pump issue.
You might take the carb off and spray carb cleaner in and around real good, without disassembling it and put it back and try again.
Also start it and take the air cleaner cover off while its running, see if that kills it or makes it want to, this would indicate it needs more fuel.
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Old 05-04-2013, 01:18 AM   #28
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You're filter is nasty. Looks like rust in your tank, change it more often and keep an eye on it.
The new filter gave you more fuel and it starts, but acts like before only it runs a little better. So it seems that you are still starving for fuel. It's running lean still. It could the carb needs cleaning or adjusting or still could be a fuel pump issue.
You might take the carb off and spray carb cleaner in and around real good, without disassembling it and put it back and try again.
Also start it and take the air cleaner cover off while its running, see if that kills it or makes it want to, this would indicate it needs more fuel.
If there's rust in the tank, is it a must to get a new fuel tank and sending unit ASAP?

Does it make a difference with or without the air cleaner? Since this thread started, I've been starting, or at least trying to start it, without the cleaner on since I've been trying to eye everything is functioning properly such as choke plate opening completely as it warms up.

Shops are closed here in Anchorage so ill have to grab some carb cleaner in the morning and spray it down.
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Old 05-04-2013, 03:51 PM   #29
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If there's rust in the tank, is it a must to get a new fuel tank and sending unit ASAP?

Does it make a difference with or without the air cleaner? Since this thread started, I've been starting, or at least trying to start it, without the cleaner on since I've been trying to eye everything is functioning properly such as choke plate opening completely as it warms up.

Shops are closed here in Anchorage so ill have to grab some carb cleaner in the morning and spray it down.
As long as you watch your fuel filter it should be ok. Without the air cleaner you get a little more air and if its already lean it'll struggle more.
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Old 05-04-2013, 05:40 PM   #30
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As long as you watch your fuel filter it should be ok. Without the air cleaner you get a little more air and if its already lean it'll struggle more.
Ill have to wait another day to clean the carb. Woke up and this is what I saw
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Old 05-04-2013, 05:59 PM   #31
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Ill have to wait another day to clean the carb. Woke up and this is what I saw
At least it still looks good in the snow. Lol
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