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View Full Version : Fuel Leak, What Is This(in pix)? 56k



HondaBoy
12-15-2004, 08:45 PM
alright. this fuel leak isnt really bad, just enough that you can smell it. apparently it's not doing it all the time though. it did it a bit over a month ago and now i'm noticeing it again, the smell of gas. i took some pix to see if y'all would know what this little part is that its leaking from. maybe fuel bowl? i dunno, i've never had real carb problems so i dont know much about them. which brings me to have an idea to buy a carb to mess around with. anyway, i'm sure this isnt good leaking fuel. i'll have a few weeks off starting friday for Christmas so i'll have some time to do stuff. i'm thinking its a gasket that is old and needs to be replaced. if so might as well rebuild it. there's a good carb shop around here that not only rebuild carbs but will re-jet it and tune it. ok, so check the pix out. i've circled the thing in yellow. hopefully you can tell me what this might be.
http://memimage.cardomain.net/member_img_a/347392_353_full.jpg
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Black Tube Is Fuel Line
http://memimage.cardomain.net/member_img_a/347392_359_full.jpg
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acranox
12-16-2004, 05:47 AM
That's the accelerator pump. Is the fuel leaking out of the top (where the rubber boot is) or near the bottom?

After I rebuilt my carb I had a leak at the bottom of the accel pump. What I did was take the carb back out, and disassemble the pump. I had already replaced the 2 o-rings, but you might want to do that. Then I used fine sandpaper (600 and 1500) to sand down the mating surfaces to create a smoother tighter seal. That cured it for me.
If it's leaking from the top then I think you have to replace the plunger piece.

HondaBoy
12-16-2004, 11:13 AM
what exactly does this accelerator pump do? i'm going to see how much i can get it rebuilt for and have some stuff added to it. hopefully that will be in my budget.

A20A1
12-16-2004, 02:19 PM
what exactly does this accelerator pump do? i'm going to see how much i can get it rebuilt for and have some stuff added to it. hopefully that will be in my budget.

It shouldn't but it can cost an arm and a leg to have someone remove rebuild and install the carb.

The accelerator pump squirts gas into the primary barrel when you press on the gas. This helps the engine run well when you slap the throttle open and there is a sudden increase in air...
or you can say it fills the gap between idle and throttle.

HondaBoy
12-16-2004, 04:44 PM
ah, just the person i was hoping would see this. my friend got his holley 4 barrel and his dad's other quadra jet rebuild and rejetted on both of them at some carb shop. they did a bad ass job and they also do performance work on just about any carb including small 2 strokes like on lawn mowers or even weed eaters. i'll ask where that place is and go talk to them because they didnt charge him an incredible amount of money to get his carbs fixed. if im gettin it rebuild to any extent i surely want to have it souped up. well better than it originally was. i know they do a lot of carbs for the circle track cars around here, so they must be pretty good.

HondaBoy
12-18-2004, 12:25 AM
ok, well i got the number and name of the place i was talking about. i'll be looking for a carb at the junk yard probley tomorrow or something. i'll just have another one rebuilt so i can still get around in my car. i still want to first find out how much they will charge for a basic rebuild. then i can see how much rejetting is. is it really worth it getting it rejetted or will i have to do other work just to make it function properly? anyway, if i'm lucky i'll probley pick a carb up for maybe $40 or so. considering what i have paid for other stuff at this junk yard.

HondaBoy
12-22-2004, 11:34 PM
so, if i didnt mention, this leak/seepage happens just every once in a while. did it once before, then this recent time. now its not doing it. still i shouldnt forget about it. anyway, it's not doing anything now. just for precautions, i've installed a nice ABC fire extinguisher in the trunk. already tested how fast i can get to it. pretty quick.

bl9366
12-23-2004, 01:28 AM
Fire extinguishers are life savers for us with older rides. About 2 yrs ago I was driving and smoke was coming out of my vents. I pulled over and the whole bloody engine was on fire. It turned out that the tranny cooler line bursted and the splatted tranny fluid was thick enough to catch fire and was all over the engine. It was the scariest moment when you see your entire engine bay on fire. In the end, I lucked out; only two vacumm hoses were burnt, and the tranny was still fine. I then quickly secured a fire extinguisher and mounted it in the trunk.

HondaBoy
12-23-2004, 08:27 PM
well i've kinda decided to let my car sit until i can get another carb for it. or so i think, right. i dont know how long that will last though. ok, well if the junk yard is open, i'm going to go see if the carb i want is still there. if it is, i'll see about putting it on for the time being until i can get mine worked on. this junk yard i go to is usually open except on a holiday, not usually before one though. if i remember correctly, this carb was all intact including the vac lines, which i will probley replace just for the hell of it. if they dont have that carb, i guess i'll be shit out of luck, lol. i'm not worried about how much i'll have to spend on another carb and getting mine rebuilt, i just hate not being able to drive my car. i'll miss the system and the fact being its my car i guess. i have the '02 accord to drive, but its not the same. guess i can pull that outta the garage and clean it up. now i can put some miles on it i suppose.

A20A1
12-23-2004, 09:09 PM
I could mail you a diaphragm for that accel pump... if I was home... but there are also two tiny rubber O-rings that are need to be replaced... that is something I don't have. I'm pretty sure you could find some in a hardware or autoparts store, they should be only a few cents each...

HondaBoy
12-23-2004, 09:38 PM
so A20A1, are you trying to tell me its cheaper to replace that little part. well duh, kinda i should guess right. if that wouldnt be too complicated, i think i can pull of the carb and do that myself. i'll go to the parts store if i go out tomorrow and ask about that. the diaphram, you think they'd have that in most stores or can order it? if so i'd rather not spend too much money right now as i had planned.

A20A1
12-23-2004, 09:54 PM
The problem is removing the carb to replace one part can create leaks for the rubber gasket that goes between the base of the carb and the EFE plate since the gasket is most likely old.

The diaphragm may or may not be available seperately... but is usually a part that needs to be ordered.

O-rings are plentiful... just make sure it's the kind that doesn't disolve is gas.

Also removing the carb can create other vacuum leaks. The ends of the vacuum lines are permanenetly expanded from connecting to the vacuum ports on the carb and the hard lines for so long. So when you reconnect them back to the ports they don't seal right.
If you need replacement vacuum lines:
Most vacuum lines are about ... 5/32" ID
Some are slightly smaller.

Vacuum lines on the thermovalves and other plastic vacuum parts can be damaged easily if you try to remove the vacuum lines from them. So be careful.

HondaBoy
12-24-2004, 11:35 AM
well, like you said, the O rings are plentiful! i looked at a repair kit at Autozone. looked like it had the diaphram that i may need, not sure if it was the exact one though. the guy said this was what they'd come in for to rebuild the carb, i dunno. anyway, its $35, also comes with the base gasket, so i wont have to buy that separate. yeah, i plan on getting some good vac lines to replace these old ones, i know what you mean about them though.

HondaBoy
12-26-2004, 01:46 PM
well, since my car thawed out today, i decided to start it up and drive it around the block a bit. after i came back, i checked out the fuel leak, still doin it now. i also notice a busted vacuum line in sight, also i could hear another one under the air cleaner. can a vacuum line possibley be the cause of this certain fuel leak? if so, i'll find it well worth it to replace some lines and check the fuel leak again.

acranox
12-26-2004, 04:18 PM
fuel leaks on the carb don't just cure themselves. and a leaking vacuum line won't fix it. Your problem is the O-rings in there are deteriorated and fuel is leaking past them. the only way to fix it is to replace the d-rings, and possibly the diaphram in the accelerator pump

HondaBoy
12-26-2004, 06:48 PM
its just been since these few lines busted though. anyway, tomorrow, i'm probley going to go look for another carb. ok, so if i do decide just to fix my carb, does the accelerator pump undo from the carb, or will i have to disassemble the entire carb? i know i'll take the carb off the manifold, cant really get around that. i got some new vacuum hose too. probley not enough to replace all the lines, i'll have to get more to do that i'm sure with a billion vac lines.

A20A1
12-26-2004, 07:20 PM
the accel pump diaphragm has three 8mm bolts holding it to the carb... or you can use the philips head screw driver to remove the bolts.

careful not to lose the diaphragm spring...

HondaBoy
12-26-2004, 07:32 PM
if that's about all that goes into this, just taking the one part off the actual carb, then i'm willing to try it. i dont wanna take the whole thing apart then end up messing up other parts. i'd like to have my car driveable within this week since i'll be going back to school soon. i had to drive our '02 accord around today, its nice, but i just dont like it as much as my 3gee. not as fun to drive i guess. guess i should go see if they have the base gasket tomorrow as well, so i'll be ready for what ever i do.

HondaBoy
12-27-2004, 11:03 PM
ok, so if you can see in the pix, the little part that's leaking on my original car is the thing there with 3 screws holding it together. that's the part that is actually leaking, not where the rubber boot is on the top. sorry for the blurry pix, still working on the new camera.
http://memimage.cardomain.net/member_images/11/web/347000-347999/347392_405_full.jpg
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HondaBoy
12-30-2004, 06:24 PM
well, i have been thinking hard on what exactly i want to do. i have tomorrow off of work, so since i'll have some extra time to work with, i think i'll give it a go at putting the new parts of this carb kit i bought into my original one. i'll follow up on the instructions in the how-to thread on how to rebuild your carb. makes it look easy anyway. if i do have any problems, i do have a mechanic to take it to. i just dont wanna spend the extra money on letting him do this. and i'd like the satisfaction of knowing i did it myself, willing that i'll get it done right. i'm not doing a major rebuild, so i dont guess i really have to worry. i bought some vacuum tubing in the correct size. i finally found some that wasnt too fat, looks about the same outter diameter as what it came stock with. i'm also thinking about doing the starters version of the vacuum line removal. dont know if i want to do that though, i'm afraid they will start doing emissions testing or something. maybe i should leave that for when i know the car is running good already? that might be a good way to go. i think i was most worried because i thought i wouldnt have enough time to work on the carb, now i think i am more at ease because i'm not having to work for 3 days. i'd like to work on the carb in my house instead of outside, dont know how that'll work. its really humid outside. i'd do the carb cleaner stuff outside though.

HondaBoy
12-31-2004, 06:48 PM
that accel pump was the cause of the leakage. if i would press on a lever to make the pin go into it, i could hear a bubbling sound, it was on the side of it that faced toward the carb, so that's why i couldnt really see where it leaked from. well if you havent guessed i'm now in the rebuilding process. i'm taking it slowly somewhat so i dont mess anything up. the bolt that holds the electronic choke assembly on that's inside the cover rivited on was stuck like hell! i tried everything, even used one of those drill bits that you take stripped screws out with. i ended up drilling the head off the bolt though, there were no other alternatives because a socket was too big around to fit into the area. good thing i got a spare carb, i can just take a bolt the same length off of it and then order a new bolt later on for the spare carb. everything is really simple, some people said it was going to be hard, but i guess thats cuz i'm doing a minor rebuild? hey, is it just me, or is the "top hat" piece's gasket made of leather? it looked very much like leather, not a like other paper gaskets i've peeled off of other things. everything looks to be in great shape inside the carb, no varnish build up.

HondaBoy
01-01-2005, 11:42 PM
i'm almost done with this rebuild project. i wasnt expecting i'd have to do this on my vacation time. although otherwise i'd probley be board. lol. i have had some fun taking this carb apart and putting it all together. i could have been done by now and had the thing in the car i'm sure, but i keep going slow on this. hope i dont have too much trouble with adjusting it. shouldnt be too hard.

HondaBoy
01-02-2005, 10:12 PM
ok, well i've finished the rebuild. besides it taking forever to get fuel up to the filter, the bowl level is perfect, it from what i saw was idleing just right. idles better than it did before. it didnt take 3-5 minutes to warm up to get to the low idle, took maybe a minute or so. i also fixed a bunch of lines running into the carb. also replaced the diaphram that's in the black plastic housing on the electric choke assembly. i'm thinking that has something to do with it warming up in less time. now tomorrow i need to tune it. it runs nice, but when you step on the gas hard it bogs for a second and then revs up. so i'll have to mess with the A/F screw. dont really want to do that but i guess i have to dont i. also noticed that the stupid valve cover is leaking on the front side, down the head onto the exhaust manifold. nice cloud of smoke when it got hot. isnt that lovely!!! well in all, this went pretty well. like i said, it was well worth it to buy the extra carb, i used 1 screw, 1 bolt, and the bowl breather vent vacuum thing. also, putting some tape on the vac lines and writting coresponding numbers on them was a big help! most lines i would have been able to remember, but some were confusing. i disconnected the A/C idle controler thing from the carb, was much easier to get the carb on too. i dont have a connected A/C, doesnt work anyway, but i did put the controler kinda hanging there connected to the vac lines until i can cap the lines off since the parts stores were closed hours ago. so i guess i did pretty well for my 1st carb rebuild. hopefully this is doing good tomorrow.

A20A1
01-02-2005, 11:15 PM
ok, in the picture, i wanted to know how to properly get what i think is called the seat out. the gold colored piece that's screwed in. will i have to take the yellow painted screw out of the top? the needle replacement looks quite strait forward, not more than putting it into the holder on the float, which i was very careful in taking off. thanks again!
http://memimage.cardomain.net/member_images/11/web/347000-347999/347392_414_full.jpg
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Turn the screw clockwise... count how many full revolutions it takes to remove the screw, that way you can install the new one in about the same height as the old screw...
I call it the float adjustment screw or float valve.

A20A1
01-02-2005, 11:20 PM
i figured out that the top slot was where you unscrew that gold part. does the little fuel way need to be strait aligned with the incomming fuel line? i'm thinking yes, but not sure.

It doesn't have to be alligned
please no more PM's relating to the Accord, post them here or in a new thread. PM me if you have something other then an Accord related queston

HondaBoy
01-03-2005, 10:28 AM
ok, thanks. i guess i had put the new screw in right. the float bowl level was right between the middle on the sight window. right now i'm about ot go adjust the A/F screw. dont know if that'll be too tricky. i'm following the how to on that.