DONNA

I know that starting in cold weather is hard for most 7's, I was looking at my carb and was unable to see a squirt when the gas pedel was pumped,,,,but when the engine is running it squirts out just right,,,,question is, with the key on (not started) and the engine can be cold, warm or hot, i will not see a squirt when pumping gas UNTILL i have the engine running,,,is there a solinoid that maybe causing this,,,cant imagine it being the accelerator pump since it works with engine running.......dont know if this is related but i did run a solid wire to fuel pump to bypass the defective relay, but that was several months ago...
any ideas,,,,,,

djmickyg

when the car is idling, its using the fule going tru the acc pump, this fule u cant see go into the engine because runs thru a pipe inside the carb, as soon *** the accelerator is pump it blocks off the accelerator pump and opens up the throttle with makes a vacume succking fule out thry the lil jets, which u should be able to see.. with the car on with out the engine on u might get some fule because the fule pump is forcing it out, and with the engine on if ur not getting fule coming out, hows ur car running???

i hope thats what u want?

Rx7carl

Sounds hokey to me sorry. The accel pump is a srtictly mechanical system. If theres fuel in the bowl, then you should see a squirt regardless of engine on/off.

DONNA

car runs great once started,,,,and squirts,,,,its just not squirting gas to startup the car, i have to pour in raw gas to start or go thru about 10 starting attempts till it starts,,,not a daily driver so no biggie,,,,,just was wondering if it was electrical problem or something else....acccelerator pump is only a few months old,,

djmickyg

the accelerator pump and passage sounds a bit blocked.

how many pumps do u give the car b4 starting it up?

Rx7carl

Your carb passages, and/or check *****/weights are probably stuck. Or your accel pump linkage is WAYYYYYY outta whack. It's checked with the engine OFF. You have a problem with it, fix it.

Wow djmickyg, that was weird eh?

85RX7GS

iTrader: (1)

Doesn't sound like the accelerator pump is malfunctioning. Is your fuel pump running when the engine is off? That's might be the problem.

Rx7carl

Are you sure your looking in the right place? DO you know where the squirters are?

specRX7_22

thats what i would think also. if the key is on 'ON', the electric fuel pump is pumping, which means fuel is going to the carb, but not necessarily squirting to the jets. and when you press the pedal you should see it squirting.... why do you think you pump the pedal to start it?

85RX7GS

iTrader: (1)

Hey now...that's not the case on the 84 or 85. I'm pretty sure Donna has an 85 GSL. The fuel pump doesn't run when the engine's off and the key is 'ON'.

mar3

iTrader: (8)

Check your fuel filter out back at the rear axle...if you see crap in there, then you've got got crap in the carb and some of it could be in the passage leading to the squirters, restricting fuel flow....rebuild time???

Rx7carl

True, but you should still have fuel in the float bowls wherther the car is running or not. IT IS NOT DEPENDENT ON ANYTHING BUT FUEL IN THE BOWL TO WORK. whew, I feel better now. And we are all in agreement, just saying it a little differently cause of year differences so.

specRX7_22

really? why is that? so it wouldnt help to pump the pedal to start on an 84 85?

NanaimoRx-7

My AP squirts when the engine's off, got kind of annoying when I was doing up the mechanical secondaires. I really thought I would have a flooded engine on my hands when I was done, but she still started great. I'm with Rx7Carl on this one, it uses fuel from the bowls.

REVHED

Maybe fuel's leaking out of the rear float bowl while the car's sitting. This would explain it as long as his fuel pump is only on when the engine is running.

85RX7GS

iTrader: (1)

Well, duh! Where else is it going to get fuel? Mars?

85RX7GS

iTrader: (1)

Not really sure as to why they designed it that way, but I'll bet there was a valid reason behind it. The 84 and 85 have a fuel pump cut relay under the dash, which, when working, will not turn the fuel pump on until the engine is cranking or running. It can be shorted so the fuel pump runs with the engine off.

Rx7carl

Its so that the fuel pump doesnt run if the engine shuts off in a crash.

Rx7carl

Well Eric, theres still fuel in the bowl so it still works to pump it b4 you start an 84-85

Sterling

Your rear float may be set too low. Check the sight glass while the engine is warm and idling.
The accellerator pump gets its fuel from the firewall side float bowl. There is an orifice directly behind the pump housing, but it is about 2/5ths the way up from the bottom of the bowl. If you sit with the ignition off (and fuel pump off) and pump it a few times, you'll "run out" of fuel. You're pumping air, is my guess.
Normally you should be good for several pumps with the fuel pump off, but if your float is set too low, then you'll have less fuel to "play" with.

Just my guess.

specRX7_22

yeah i knew that, but what if the car has a problem which it wont start, and you keep trying (each time pumping the gas). what happens when you empty the bowls? how would you finally start the car?

i know im questioning the experts here lol but my stupid questions will help me understand this hopefully (yeah yeah, i know... theres no such thing as stupid questions....).

Sterling

Once the ignition switch is turned, there's a relay that turns on your fuel pump. The relay shuts off after a fraction of a second if the car does'nt start. If you had a loud-*** Carter pump (like me ), you would hear it buzz for just a slight half a second after each cold start attempt.

specRX7_22

oooooo i get it now. thanks sterling

DONNA

like i said in the first post, i have bypassed the relay, i have fuel pumping when i turn on the key (i have gas flow when i pull off the inlet hose to carb w/key on) so i know i have good gas flow, just no squirt, i will check the rear bowl window and then check the ball and weight next,,,,,thanks for all ya'lls help too,,,,,,you are great........

mar3

iTrader: (8)

And like I was saying..

You're not checking to see if fuel flow is restricted, you're checking for the actual presence of debris coming from the fuel tank...if it's there then it will also be in any steel fuel lines or potted metal of the carb....