Aftermarket external fuel pump

[xirdneh]

Well my pump just died! So I'll be looking for a cheaper alternative or similar price! The stock mechanical pump, they want like 158$ for it! No way I'm paying that much,

try o'reillys
or rockauto.com (probably around 20.00 + shipping)
most deliveries in less than a week

[Petros]

Rock auto sells them for only $18 to $39, mail order. Don't know why it is so costly in BC, that is rip-off.

http://www.rockauto.com/catalog/racatal ... ttype=5808

Local autozone has them for $39, and they have a generic aftermarket electric pump for $49 in-stock.

http://www.autozone.com/autozone/parts/ ... lutdZ8vcz2

If you were coming to the US you can likely get one in Bellingham or Lynden auto parts store in one day (phone order it and go there to pick it up). Save you over $100. Or see if any of your local friends are going to cross the boarder anytime soon.

I have 3 or 4 used ones that all work, I will be happy to send you for $10 plus mailing cost. I can mail them to you but cross boarder mail rates are pretty large, likely about $20, and it is slow. Would take about a week or more to get to you (even though you are only about 100 miles away, I can have mail to Florida 3000 miles away for $10 in two days).

I would never pay that much for $30 part. Your local parts supplier is a rip-off. This pump is common to a lot of models of Tercels and Corollas, very common, 1980-1987 and usually reliable. I have never had one go bad, so the used ones are a good bet, but if you can land a new one locally for a reasonable price you might as well buy a new one.

[Lil Beast]

Yes I know it's pricey, but that was at Lordco they are better in performance part! Napa was closed, gonna try tomorrow! And I do not want to wait a week! I got a rally in 10 days! I was thinkin a Carter marine performance fuel pump! About 75$ - 40% discount so I'll probably throw in a adjustable fuel regulator but that's a special order! The carter is about 10-14 psi would it be too much until I get the regulator! And it should work with the 4AG!

P.S. Forgot to mention earlier the 40% discount would bring the pump down to 100$ approx. with taxe but still! Need a external electric fuel pump cause of the swap! Why buying twice?

[SynthDesign]

I've given up on the factory style fuel pump that runs off the lobe, especially because of the use of a Weber carb. I had pulsation issues which were immediately fixed with an electric pump. But nothing beats factory if it's all stock.

[Lil Beast]

I did notice an uneven idling! Will see, I just went to town and bought this:

posiflow.jpg

fuelpump.jpg

88$ Napa posi-flo 32GH 4-7 PSI self priming
Was thinkin to mount it in the hood, but after taking a good look, along the firewall would be a good place but realize it was beside the distributor dunno if it leaks on the dizzy kinda of a fire hazard, the other side is the exhaust didn't like the fact yesterday that it was leaking on the exhaust! Good thing I was installing my tach and notice a gas smell and saw the pump spitting by the vent hole on the exhaust! Dunno how long its been goin on too, it was a while once in a blue moon I had draft coming in but not steady, thought it was the unplug canister, guess not! So I'll wait the rain to stop and lay under to see my option along the frame rail kinda thing my guess do not want to drop the tank! The hole in front where the wiper motor is come to my thought too! I'll see! Any suggestion?

(Re-edit) I blew in it to see the flow of the filter and some stuff puke out of it(pump)!?! Feels oily? Dunno first time I see that!?! So it means it would of went it the carb and engine? Weird! Kinda suck cause it went on the couch! Anyway no biggy!

It comes down with 2 options for a nice installation! Still raining but still went for a roll on the crawler!

fuelpumploctank.jpg

fuelpmplocfrontrail.jpg

The front rail looks like a good spot easy access and got some kind of protection from the ground! I would consider making some protector plate over the time! Lots of room even for another fuel filter just before! Never too safe!

[Lil Beast]

Well the day was dying and the rain kinda stop! So I went to do a little before dark, the 2 option mentioned before would work but not to my liking, first of too narrow of a 1/2 inch only 1 bolt was goin to fit! And I could see gravel flying by the front rail!

The tank it's kinda small hole to work in! So find a 3rd and final spot! Underneath the rear seat close to the tank and high enough with easy rerouting!

newpumplocation.jpg

I'll wait tomorrow to bend the lines and finalize evrything! The xmember will give a good protection for the new line and pump somewhat! And should be easy to make a skid plate for that location!

[SynthDesign]

Curious about that pump, Lilbeast. Good find!

I recommend as lows as possible and as close to the tank as possible. Let me know your findings. It should work much better than the stock pump when running a Weber Carb.

[Lil Beast]

Well everything is installed! It wasn't so bad, the hardest part was to get the line free without to much damage! I've broke 1 line holder bracket(old rust) no big deal!

fuellinesrerouted.jpg

pump%20installed.jpg

After all that work, came to the disappointment of not starting! No gas reaches the carb! Sun fell it's dark! In the morning I got to figure what went wrong! I was real low on gas maybe too low now? I double checked if I used the right line or pinched it but on that side it's fine! Maybe a bad pump, must be the noisiest pump I've ever heard(tacatacatacatac, pretty much!)Hope cause it's running dry(but means power is getting there!) I'll plug a hand vacuum pump with a canister on the line before the carb and prime it, if nothing comes it's out of gas!
BTW they mentioned to hook the + wire to the oil pressure in case of engine failure, low oil, for safety if engine fails the pump would shut down, it doesn't work cause the starter does not give enough pressure to start so I used the + pole of the coil, works the same way!

[Petros]

i hope you made sure you connected to the correct line out of the tank, one is a vent line to the charcoal canister and one is a return line for the excess fuel off the old fuel pump. Only one of the three lines from the tank sucks fuel from the bottom of the tank. STudy the FSM diagram of line routing in fuel system.

[Lil Beast]

I'll check again, but I followed the line from the filter and it's the only one I've disconnected! Kinda hard to do a mistake there but you never know! I'll disconnect where I plugged the line on the tank and blow in it, I'll know right away! Should be simple, probably a bad rubber hose routing!

[Lil Beast]

Was too low on gas it must of drain from the worn pump! One of my friend came by with some gas! Turns out to be a very quiet pump, runs smooth, but I only warmed up the engine! Test drive tomorrow! Maybe the pump from the parts car works, lol, but the conversion had to be done soon, no matter what anyway! One step further in my swap!

[Lil Beast]

Works, do have little issues like big burps at highway speed! But I think due to higher flow a little I can't have the tank as low as I could with the stock pump, cause it worked fine at the beginning! Dunno how much I put in either my friend had a jerry can I think like 2 gallon top! I'm broke today, I'll have to do another test when I can some money, sometime later today! The good thing is that it gave you some kind of warning that I'm going low it burps if that what causes it and the pump gets noisy!

I would also recommend to put some teflon wrap on the fittings that goes in the pump! Brass! Had to chew mine with vise grip to be tight enough! But I think I'll have to cancel the rally this weekend, not trusting enough for a 3500km road trip just yet!

[SynthDesign]

Glad you got it working.
Are you running a pressure regulator for your Weber? Might need to be adjusted. As for burps at high speeds/revs, the pump might not have enough flow capacity.
"40GPH is recommended for a Weber 32/36 run hard (seriously whatever that means) and 34GPH for daily driven." according to the guys at Carb Connection in Kirkland WA.

Other thoughts besides low gas Lil Beast?

[Lil Beast]

What comes to my thought too is the pressure being too high and the float just works in too much which could feel like a low gas! It says 4-7 psi on the package so it vary between the 4 and 7, I know the weber 32/36 needs a steady 3 psi according to weber spec! So the regulator could be an idea!
The package mention 32G/H so it might be a little low there too, as you mention

40GPH is recommended for a Weber 32/36 run hard (seriously whatever that means) and 34GPH for daily driven." according to the guys at Carb Connection in Kirkland WA

, when I drove slow it felt alright and when I slam it it seems to gradually burp but then again the pump start to make a bit of a noise at the same time, and seem fine at the beginning, I am very low on gas! I'm gonna have to go by elimination! While filling this post I also phone napa and order and adjustable fuel pressure regulator for 25$ in tomorrow! So I'll knock 2 birds with one rock, I'll make the gas needle move at least and put that regulator in, so if fails again the guys at Carb connection are probably right cause I drive hard! Will see! Can't think of anything else, it's pretty basic got to find the right spec I believe!
(Re-edit) Dunno if cause I use the return line of the weber now, it could cause that I need a different float adjustment! Really doubt it! Could it make a difference?
Other things I know the stock pump delivers 4.6 to 6 psi, which could be the pulsation noticed! Now I'm 4 to 7 psi quite a bigger margin(double) which might be the intermittent burp! The only thing I can't find so far is how much GPH the stock pump delivers, anyone knows?
And found this very interesting article: http://www.chevyhiperformance.com/techa ... ewall.html enjoy!

[Lil Beast]

Regulator not in, tomorrow they said! Put more gas in works a bit better, but I think the filter clogged, cause it goes fine for 5 min approx. And then start to burp and got to go so slow! Shut the engine down wait 10min and it's good for another 5 min of fame! I'll buy a filter at the same time tomorrow!