nolimitRx7

hi, i have an 88 rx7 turbo thats been sitting for 2 years. injectors spray it fires and wants to go, had it idiling for about 20 minutes after pull start, and as soon as u hit the gas it dies out like u shut the key off. some times it will fire and start, some times it wont. i know the afm was stuck but i freed it up. any advise?

Aaron Cake

iTrader: (1)

Did you flush out the fuel system, replace the fuel filter, etc.?

JoeyMazda

A friend of mine had the same problem. I checked it out and noticed that the coils were going to ground. replace wires

lostmenoggin

DEFINATELY check that stuff out. If it hasnt been run in 2 years DRAIN THE GAS and refill it with some new stuff. Before you refill the gas, pull the pump out real quick and try and take a peek inside the gas tank. See if there is any rust or built up gunk on the bottom of the tank especially in the area where the fuel pump sits. If there is anything in there, clean it out. I recently got a TII that hadnt been run in 2 years as well. Had to replace the fuel pump, drain the nasty stale gas out, changed the fuel filter.. I got it running but whenever you'd try and gas it it would fall on its face and kept flooding out so I put in new plugs and now it starts up every time.

nolimitRx7

well, the tank was drained b/f it was parked, fuel is clean, i changed the fuel filter, yes, it was partially plugged, but no improvements. the spark is fine and the plugs look brand new. it floods out, and some times i can get about 1000 rpm b/f it dies out again.

Aaron Cake

iTrader: (1)

Assuming it makes good compression, have the injectors cleaned and tested.

mortiky

fuel pressure test?

nolimitRx7

yeah, it seems everyone is thinking fuel pressure, i will test it, but im still confused about when i pull the plugs out they are wet? i pulled the lower injectors, they are spraying fuel.

Aaron Cake

iTrader: (1)

It's probably not fuel pressure unless the pump is bad. Test it anyway, but the FPR rarely fails.

mr.rotaryrx7

try compression starting it yet?

nolimitRx7

compression starting? i switched fuel pumps, no result, it will rev a little then miss and die out

Aaron Cake

iTrader: (1)

No idea what "compression starting" means. I think he may mean "push starting".

Have the injectors been flow tested yet? It's very common for a car that has sat to have a bad injector or two. The only way to get them working again is to have them professionally cleaned.

Drft_lock

iTrader: (2)

Ive been having the same exact problem except mine was not parked. so i think that is not the issue. I'm gonna run some test on it today and let u know

nolimitRx7

well, i hooked wires to the secondary injectors and turned the fuel pump on, they spray fine. ohms are about 8-12. the primarys spray when you crank it over. its got to be a computer control problem, some times i can get 2-3000 rpms b/f it misses, and dies out.
does anyone know when the secondary injectors are supposed to come on?

Aaron Cake

iTrader: (1)

The secondary injectors fire above 3800 RPM when the boost sensor reads about 2" of vacuum. Thus, they only come on under load.

Another cause of the car starting then immediately stalling is a bad AFM. Though I have not suggested this yet because you say you had it running for 20 minutes.

What do you mean you "hooked wires to the secondaries"?

Have you had the injectors cleaned and tested yet? Regardless of whether this is the cause, it needs to be done and is most likely the cause.

nolimitRx7

i replaced the Air Flow Meter. i t now has throttle responce and runs fine.

Aaron Cake

iTrader: (1)

Sweet. Now, go get those injectors cleaned.