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Thread: Fuel pump strainer/sock

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    Fuel pump strainer/sock

    fuel pump strainer/sock

    Been having problems with my car still. Had a new delphi pump put in back in Jan and now I'm wondering if that pump was any good. I've been having problems starting and running the car ever since.

    I was looking at Eric the Car Guy on youtube and he says Honda pumps very seldom go out. I had the new pump put in because I was having a hard time starting the car. I looked at my old pump and noticed the sock is black. I was wondering if this was the only thing that was wrong with it. I'd like to clean it to save money and to, I don't know if I can find a replacement for it. Does anyone know where I could find a sock for the OEM fuel pump for a 86 Honda Accord LX with a carb. Or is there a way I could clean it. Thanks



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    Re: Fuel pump strainer/sock

    Is the tank rusting? If so, you'll continue having problems until you replace it.
    Dr_Snooz

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    Re: Fuel pump strainer/sock

    I just bought a new sock for the EFI pump a month ago off rockauto I would think the carb ones would be still available.
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    Re: Fuel pump strainer/sock

    Dr Snooze

    I don't know if there's rust I didn't put the pump in. The mechanic didn't say there was any. I believe the pump was the original. It still works. I was thinking low pressure is due to the sock being so dirty.

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    Re: Fuel pump strainer/sock

    Oldblueaccord

    I looked at the socks at rockauto but I didn't know if the sock has to be the exact same configueration as the OEM. They have the one that fits the Delphi but it's a different shape. Do you know if I can use a different shape one or does the shape matter at all?

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    Re: Fuel pump strainer/sock

    Arguably the only thing that matters is the end that slips over the pump inlet

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    Re: Fuel pump strainer/sock

    lx 1986

    yeah I noticed that too. On my EFI gas tank there is a little well that is tacked into the tank to help with fuel slosh and the sock lays down in it. So the angle of the sock fitting I felt was critical to work correctly. it reminded me of a butter dish.

    I never looked into a carb tank to see if there is anything in there.
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    Re: Fuel pump strainer/sock

    ShiRen and Oldblueaccord

    I noticed the end of the pump on the OEM has a small piece of plastic that's part of the pump. It holds the sock on. There's a notch on the neck of the ring of the sock which that piece fits in, I guess to hold it in place. The sock is a semi triangle shape.

    The Delphi has a round sock and it appears to just be pushed on. It has no notch.

    I 've been trying to clean OEM sock with carb cleaner. Not sure if the sock is black normally or not. Very little stuff has come out of it.

    Oldblueaccord

    I have seen what your tank looks like inside I haven't seen the inside of mines yet. That's why I thought maybe mines needed a certain shape like yours.
    Last edited by lx 1986; 11-16-2020 at 07:43 PM.

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    Re: Fuel pump strainer/sock



    1988 Lxi owner since August 1995
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    Re: Fuel pump strainer/sock

    Oldblueaccord

    Thanks for sending me the videos. If there from youtube I think that's how I know what your sock looks like and what the inside of your tank looks like. I don't think my tank has that tub inside because the sock is different and the OEM has a semi-rectangle sock and the Delphi has a round sock.

    The Delphi pump seems to be working off and on. Sometimes I can hear the pump and other times I hear nothing. Makes me feel like I'm going crazy. Since I'm doing this by myself I have the back seat down and have the pump exposed so can hear it now. I do notice when the gas gauge moves slowly up like it's not building enough pressure it has a hard time starting and then there are times when the gauge moves up with no problem. When I can get the car started the site glass in the carb appears to have nothing in it or a little less than half full when I turn the key. Sometimes When I step on the gas and it does start the site glass in the carb fills up to almost the top of the glass. When I 1st noticed this was when I had the Delphi put in right before I had the new carb put in. I didn't worry about it because the mechanic was thinking at the time it was the carb that was causing the no start problem.

    When I had the carb replaced the site glass was always full and I couldn't get it to adjust down and noticed that the venturi was shooting gas out when the car was idling and that's when I started having problems with the car stalling when I had to brake when I come to a stop sign or signal. I had the old carb put back on. Still having problems with all of this. The only thing both carbs have in common is the Delphi fuel pump. Maybe I just got a bad pump. I bought it from Autozone in Jan. I'm going to test electrical 1st and then go from there.
    Last edited by lx 1986; 11-17-2020 at 01:52 PM.

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    Re: Fuel pump strainer/sock

    The pump is ran on a pulse from the tach, so it might be hard to hear.

    I can tell you for a fact that the replacement carb has a bad oring on the needle and seat, the yellow screw right above the fuel line. Probably the bottom oring if gas isnt seeping from the top of the screw. You can replace it if you take the top of the carb off and screw it all the way down, but its a little tricky finding a fuel resistant oring in that size. Other than that the new carb is probably good... still this is the shit they give you nowadays when you go reman.

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    Re: Fuel pump strainer/sock

    Quote Originally Posted by lx 1986 View Post
    Oldblueaccord

    Thanks for sending me the videos. If there from youtube I think that's how I know what your sock looks like and what the inside of your tank looks like. I don't think my tank has that tub inside because the sock is different and the OEM has a semi-rectangle sock and the Delphi has a round sock.

    The Delphi pump seems to be working off and on. Sometimes I can hear the pump and other times I hear nothing. Makes me feel like I'm going crazy. Since I'm doing this by myself I have the back seat down and have the pump exposed so can hear it now. I do notice when the gas gauge moves slowly up like it's not building enough pressure it has a hard time starting and then there are times when the gauge moves up with no problem. When I can get the car started the site glass in the carb appears to have nothing in it or a little less than half full when I turn the key. Sometimes When I step on the gas and it does start the site glass in the carb fills up to almost the top of the glass. When I 1st noticed this was when I had the Delphi put in right before I had the new carb put in. I didn't worry about it because the mechanic was thinking at the time it was the carb that was causing the no start problem.

    When I had the carb replaced the site glass was always full and I couldn't get it to adjust down and noticed that the venturi was shooting gas out when the car was idling and that's when I started having problems with the car stalling when I had to brake when I come to a stop sign or signal. I had the old carb put back on. Still having problems with all of this. The only thing both carbs have in common is the Delphi fuel pump. Maybe I just got a bad pump. I bought it from Autozone in Jan. I'm going to test electrical 1st and then go from there.

    on carbs you only need like 3 psi I wouldnt be surprised the fuel pressure is way higher than that.

    EDIT: also another thing to try is leave your gas cap loose so it vents the tank correctly and the pump can pull fuel.
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    Re: Fuel pump strainer/sock

    Oldblueaccord and ShiRen

    Before I had Delphi put in only problem was cold starting with old carb on. Site glass was never full and never had problems braking and car stalling at stop signs. Once car started I could drive it all over the place.

    I'm leaning towards new bad fuel pump. Otherwise I can't figure out why both carbs site glasses would be full and can't be adjusted and fuel is leaking through the venturis. And both have the car stalling when I have to stop at a sign or signal.

    The maximum psi on the Delphi is supposed to be 3.

    It seems that the pressure is more when car is running and as far as the pump working when starting I only hear it sometimes and it can't put any gas in the carb even if I cycle the key several times this happens off and on. Seems like no pressure sometimes and 2 much at other times.
    Last edited by lx 1986; 11-18-2020 at 03:59 PM.

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    Re: Fuel pump strainer/sock

    Checked electrical today. Starting battery voltage was about 12.7. I hooked negative cable to battery and ran a line to pump negative and got a reading of 0.01 on multimeter at 200m dcv. Positive side reading was 9.7-8.7 dcv volts with key in the ON Position.

    I noticed there was white looking paste in the back and all inside of the connector. Could this be lowering my battery voltage? It looks like stuff that's packed in the back of some connectors on my car. Does anyone know what that stuff is? If the white stuff is not a problem where should I start looking for problem of low voltage?

    I had relay changed already, ignition switch is good, had mechanic clean out connections on fuse box. Could my coil be the problem? Anyone else had this problem?

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    Re: Fuel pump strainer/sock

    Quote Originally Posted by lx 1986 View Post
    Checked electrical today. Starting battery voltage was about 12.7. I hooked negative cable to battery and ran a line to pump negative and got a reading of 0.01 on multimeter at 200m dcv. Positive side reading was 9.7-8.7 dcv volts with key in the ON Position.

    I noticed there was white looking paste in the back and all inside of the connector. Could this be lowering my battery voltage? It looks like stuff that's packed in the back of some connectors on my car. Does anyone know what that stuff is? If the white stuff is not a problem where should I start looking for problem of low voltage?

    I had relay changed already, ignition switch is good, had mechanic clean out connections on fuse box. Could my coil be the problem? Anyone else had this problem?

    12.7 VDC is good.

    9.7 VDC is not its too low. I would go thru the wires esp by the relay and see if its seated properly. I am thinking its on the back of the in cabin fuse box maybe? You might pull the fuse box down and check it over real well for connections or spots where something has gotten to hot and now you have a bad connection. The white paste your seeing is dielectric grease to keep corrosion out of the connector.

    Reason I mentioned the pressure is the needle and seat "hold back" the pump pressure so if its 5 or 6psi instead of 3 psi you would see what your seeing over filled fuel bowl and fuel popping out the top of the carb sometimes.

    Alos check in the carb section about loose venturi and a few other typical problems with these carbs.
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    Re: Fuel pump strainer/sock

    Oldblueaccord

    Thanks for the reply. I pulled the the newer relay (WVE brand) and opened it up to see if anything was wrong with it. I wanted to compare it to the OEM to. OEM is more well made.

    I decided to put OEM back in to run test again. This is what I got:

    Negitive - 0.00
    (meter set to 200m DCV) ignition switch not in ON position

    Positive - 11.07-11.87
    (meter set to 20v DCV with ignition in ON position.

    Will the dielectric grease stop the connector from conducting electricity. Reason I asked is because it's all on the inside of the connector. When I see videos on replacing the pump no one has any grease on theirs or puts any on.

    As for the pump it's still fill up the carb like before. I think you might be right about it putting out to much pressure. I noticed the hose, (mines only has one) the clamp on it is loose. I'm going to put aother clamp on it. Could this be a place where I'm getting a vacuum leak?

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    Re: Fuel pump strainer/sock

    Yes one volt off is much better. The grease is supposed to pass electricity but maybe age and dirt is adding in resistance.

    Usually to much pressure is just the pump made incorrectly for the application. I dont have a carb Honda car so this is a guess but usually there is a return line to relieve/regulate the pressure make sure its not pinched anywhere by a clamp or a bracket. Also make sure your fuel filter is clean new and no restrictions there also.

    On performance type carb set ups it customary to add in a "return" style pressure regulator before the carb to be able to adjust the pressure where you want it.

    Im not sure where on your car you could test the pressure the EFI setups have a place onto of the filter.

    Also like Shiren said maybe the carb adjustment the O-ring is shot and your not getting the adjustment your wanting.
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    Re: Fuel pump strainer/sock

    Oldblueaccord

    Thanks for the info on the paste. I got the car started today. To clarify my pump has only one hose not the customary 2. The mechanic told me it was a single feed pump.

    My car I guess is to old and there is no shrader valve. The gas line from the carb is plugged into a filter and there is another gas line plugged into the other side of the filter that goes to the tank. So what I'm dealing with is just a hose opening no valve of any kind. Do you know if a gauge has a fitting for just a hose to check the pressure? I'm hoping your right about the pressure being to high and it's not the o-ring on the carb.

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    Re: Fuel pump strainer/sock

    I think you can rent fuel pressure kits from auto parts stores.

    Since you dealing with pretty low pressure I would make your own with a gauge, a brass T and some barb fittings.

    I would check and make sure clamps are on all hose junctions but that usually just effects the suction side of a pump.

    https://shop.advanceautoparts.com/p/...E&gclsrc=aw.ds

    heres one from Advanced. I dunno if I would trust a cheap plastic gauge with gasoline.
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    Re: Fuel pump strainer/sock

    It might be pretty hard to get a reading from 3psi... Its so little you are almost definitely getting enough or none at all.
    I would say the best fuel pressure test would be to unhook the fuel line from the carb and run it into a bottle. You should get so much fuel per second if you really want to measure it and do math, but you have to actually see it and time it. It should carry enough fuel to fill the float bowl in just a few seconds, thats the important part.
    Imo you are way too hung up on the fuel pressure. As long as you don't have any blockages in the line, bad filter, etc, and you test the pump with 12v you have done more than enough to assure you are getting enough fuel for the carb. Its not unheard of for the pump to go bad, but it wouldn't fill the float bowl and spill out the venturis. You need to assure your carb is in working order. The needle and seat should not leak and the venturis should not be able to move if you wiggle them with your finger. If you need to tighten the venturis there are yellow flat head screws on the left side of the carb.

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    Re: Fuel pump strainer/sock

    ShiRen

    The reason I did the tests was to see if I was having an electrical problem. I could get the car started once in a while and could hear the pump working and then not hear anything. Because I put the OEM relay back in now I can hear the pump running and the car starts. So now I know the pump is getting power.

    As far as the pressure is concerned. My thought is I never had this problem before until I had the Delphi put in Jan 2020. The mechanic said it was the carb that was causing the crank no start problem. I had the OEM pump removed and the Delphi put in right before I had the carb replaced thinking it would help make the car run better with a new carb. My OEM pump never had this pressure problem with the old carb just a crank no start. Turned out to be the dizzy was the problem.

    When I 1st noticed the high level in the site glass was the day after I had Delphi put in. I didn't think anything of it because I was getting new carb put on. I just thought is was the problem with the carb and once it was replaced problem solved. Had new carb put on and problem wasn't solved. Couldn't adjust gas level down at all. Had new carb removed and had old one put back on. I have to have rpms set up higher so I can drive it and car gets hot. Still having problem but I can adjust the gas some with the old carb. Can't believe I would have the same problem with both carbs. I checked the venturis there not loose.

    I understand what your saying if the pump wasn't working right there would be little to no pressure.

    But if there was to much pressure the condition that I'm describing would be happening. Take a look at this video, his is for a Edlbrock carb. I have a Keihin 2bbl. My problem is similar. Tell me what you think. Thanks for helping me.

    https://www.youtube.com/watch?v=maPgobDE_1E
    Last edited by lx 1986; 11-24-2020 at 05:28 PM.

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    Re: Fuel pump strainer/sock

    I'd borrow a pressure tester from Autozone. My tester from Harbor Freight will register down to 1 psi. It may not be very accurate, but it's better than guessing, right? Verify both pressure and flow according to the Honda manual (starting on p. 11-44) and eliminate the guesswork. If the pressure is too high, install an adjustable regulator like the guy in the video.
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    Re: Fuel pump strainer/sock

    Money is real tight right now. I was thinking that I would put the OEM pump back in & return the Delphi. The return has to be done at the store. I don't have a ride to the store so I thought if I put the OEM back in I could also see if the problem was with the DELPHI for sure. It's still under warranty until January 2021. I really can't afford to spend extra money to buy a regulator if it turns out to be a bad pump or the carb rebuild kit if I can avoid it. It would also tell me if I'm having a problem with the seat & needle in the carb if the same symptoms happen.

    I tried to start the car the other morning & heard the pump. It put some gas in the carb & it wouldn't start. I tried to start it again turned the key & heard nothing. I checked the site glass & there was a little more gas in there. I cycled the key 2 more times & it started. It ran for a few minutes & than died. I got it running. And now it's not running again today. It seems like it wants to run off and on sporadically and pressure is erratic.

    Thanks for the suggestions DrSnooze about the regulator. Oldblueaccord thanks for the link you sent. Thanks ShiRen for your input about the carb. I'll update what the results are when I put OEM back in. I'm waiting for a new gasket for the OEM so I can reinstall it.
    Last edited by lx 1986; 11-30-2020 at 05:04 PM.

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    Re: Fuel pump strainer/sock

    I definitely don't think you should buy a regulator for the stock system, that would be a moderately expensive bandaid fix and might not work well with the pump being rpm regulated. I hope the oem does something, this is strange?
    In the meantime, did you check the venturis to make sure they are tight? Nothing on the carb is leaking? I actually cracked my carb one time, that was cool, it was on the back side along the accelerator pump.

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    Re: Fuel pump strainer/sock

    ShiRen

    What's strange is the problem is happening with both carbs same symptoms. Only thing in common is the pump. I checked venturis on both carbs and there not loose on either. I can't find any leaks, gas or vacuum lines. I'm hoping the car will start when I put the OEM back in and problem solved but that's wishful thinking on my part. If it turns out to be carb problem from what your saying about that I would have to buy a rebuild kit just to get the o-rings if there hard to find. Thanks for the help really appreciate it. I'll post back the results when I change the pump out.

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