EricJM1FC3

Ok, so my rx7 won't start. It cranks, i have spark from the coil and plugs. I've pulled the EGI INJ. fuse and cranked it for about 5 - 10 seconds at a time 4 or so times. plugging the fuse back in and still no start. i repeated the process 3 times, to no avail. I've had it work previously. But not this time. I'm not hearing alot going on in the fuel pump region.. matting has been pulled, pump cover removed. I'm not feeling any pulsations in the feed line and like i said no sound. Is there a fuse i'm not finding that i should check out before i go about replacing the pump?

Also the fuse box in the engine compartment. Anyone know where i can purchase those? I've looked everywhere and it seems no one has them. I'm not sure if any of them are bad. But i know they are old, so i'd like to replace them. Could they have any affect on fuel supply?

Thirdly. i'm missing the mounting bolts for my cruise control cable, would it not being hooked up be the cause of my accelerator cable coming unhooked at the throttle body? I've hooked it back up twice. And it unhooks its self during cranking in most cases. Any ideas for fixing it? Maybe i'm hooking it up wrong?

Thanks for any help you can give me.

alexdimen

iTrader: (13)

if you want to check your fuel pump, turn the ignition switch to "on", then go to the passenger strut tower and look for a yellow 2 spade connector and jumper the two connections on it with a short length of wire. you should hear a relay click and when you put your head in the hatch you should hear a whirring sound.

if your pump works, the car isn't flooded, you have compression, and you have spark it should start.

i would pull the plugs individually and set them on something grounded and watch them spark as i cranked it and if they didn't, scrub them with a wire brush and take a solvent and then a propane torch to the tips. sounds like you already found out they spark though...

have you tried pulling the plugs to unflood it? there is a good write up (i think) still on www.rotaryresurrection.com

EricJM1FC3

Yeah i cleaned the plugs already everything is sparking strong, #2 trailing wire is a tiny bit weak but not enough to keep it from starting. I'll try the jumper wire on the test connector tomorrow. and if its working then i was on my way to the ATF/Oil in the leading spark plug holes. the car sat for a good while, so i'm thinking carbon may have done some sort of ill will on the apex seals. I'm not really sure though. Thanks for your help though. i appreciate it.

EricJM1FC3

Ok so, i had previously jumpered that test connector in an attempt to pressurize the fuel system, thinking that it had just been sitting too long or something. When i jumpered it again today i didn't hear anything from the fuel pump. the relay is working. Is it possible that the EGI Comp. or EGI Inj. fusible links are bad? Would that keep the fuel pump from working?

I'm just trying to avoid the inevitable i guess. More or less just want to see if there is anything electrical that could keep the pump from operating, before having to drop for another one. Thanks Guys.

rx7ryan

there are no fusible links, and the fuses don't go bad, they just blow...so unless you can see through the clear plastic on top of the fuse and it's blown, everything is good with the fuses.

you may, as a last resort, want to check the voltage going to the pump. i haven't done it before, but you will definitely find it if you look it up on here. if you check the voltage and it ain't gettin it, you need to check your electrical, not get a new pump. If it is getting power, you need a pump. simple as that.

rx7roller02

you may be forgetting something here--you need fuel, spark, and air to start. I see no mention of anything about air. The afm could be an issue here. IIRC, there is no way to test the afm, though I could be mistaken. Your afm could be sending a bad signal to the ECU, and that would cause the car not to start possibly. did you do any sort of compression test? It is easy to do and not expensive, either. Never mind trying to avoid the inevitable--you need to just check the possibilities out until you find the right one. You have spark, so go to a compression test now, before you tear apart the electrical system. Pull one spark plug from the front, then pull the EGI comp fuse and try to start it. When yo do this, pay attention to the sound the motor makes--if your seals are good, you will hear three "whooshes" that sound even. Try it again wiht the rear rotor, after you replace the front plug. If either one does not sound even, you either have blown something or you are flooded, but it sounds like you know enough to tell if you are flooded at this point.

When you pulled the plugs, what did they look like? Is the car a stick or automatic? I had the same trouble once with my 86 GXL--tried to unflood it by pulling the EGI comp fuse, but if it gets really badly flooded, you can waer down a starter and battery trying to get all the gas out. I found that push-starting it was far easier--tried several times to unflood it with no luck, and push-started it only twice to get it to fire right up. If yours is a stick, try it out.

alexdimen

iTrader: (13)

pull up the rear carpet when you listen for the fuel pump... should be able to hear it i have no rear padding and i hear it at lights.

you should also check out those unflooding procedures on the website i linked.

a compression test is a good idea if you're questioning the internals... there is also a how to on that on that site i linked to in my first post