My 4age not firing up

[Wanabe_Garage]

sorry guys but im a complete newbie and cant find the information regarding this.

At first I couldn't get the engine to start but i quickly got over the problem by cross checking the wires with wiring diagrams. now it turns over but doesn't fire up... i double checked the wiring and it is all seems ok, im sure power is getting from the ignition to the igniter, ecu and injectors....

Im not too sure what to do from here. Can anybody help with troubleshooting this problem or where i can find more information

thx

[oldcorollas]

1. check if it is getting spark.
2. check if it is getting fuel.

go from there (that halves the number of places to look)

oh and check fuel pump is running too.

and triple check wiring, do it step by step, it's reeeally easy to overlook something you assume to be right.

[Rolla Boy]

1. check if it is getting spark.
2. check if it is getting fuel.

go from there (that halves the number of places to look)

oh and check fuel pump is running too.

and triple check wiring, do it step by step, it's reeeally easy to overlook something you assume to be right.

Thats it man...

Fuel or spark is usually it...

[Wanabe_Garage]

Ok

fuel pumps are working and circulating. must be the spark?

tommorrow ill rip out the wiring and check again


rep up!

[roadsailing]

check you injectors too, fuel pump is only part of the picture. you should be able to hear the injectors "clicking" as you turn the car over.

spark is easy to check, so you should be able to at least get some banging out of it. if you get banging, check the timing.

[dray]

i just had the same problem with my 4a. if you have fuel and injecters are working, as well as the igniter, check the coil followed by the dizzy.
good luck
dray

[Hen]

I searched for months to find a wiring problem on an engine I have in the garage, and found none. Then I charged the battery I was running it from and away it went.

Worth a try.

Hen

[Wanabe_Garage]

check you injectors too, fuel pump is only part of the picture. you should be able to hear the injectors "clicking" as you turn the car over.

spark is easy to check, so you should be able to at least get some banging out of it. if you get banging, check the timing.

nope none of those i dont think

check the coil followed by the dizzy.

that reminds me...i hope the second hand igniter and coil i bought is working...

oh and Hen, wish it was just the battery
pulled the efi wring out and im checking it and cleaning it up some at the moment. see how it goes in a few days when i put it back it and get it ready again. ill try troubleshoot it starting from the wiring

thx for the feedback guys
REPUTATION UP!

[YelloRolla]

try disconnecting the return line off the fuel rail and see that fuel is coming out (when you turn the ignition on). Further to what has been said; air + fuel + appropriately timed spark = running motor everytime.

[fixeruperer]

pull lead out stik screwdriver in it get some one to crank it if u get zaped yay you have spark if you dont pull coil lead out of dizy try get zapd again if you dont the rotor is prolly earthing out or wiring is rong , if no spark still test ignition module

[BradW]

How about you get your mate to hold the screwdriver and you crank it or better still hold the screwdriver near an earth so the spark jumps to earth and no one gets zapped.

[bobob]

These might be silly questions but;



Got Spark?

Got fuel?

Pulled the plugs out to check?

What car is this all in?

What ecu / loom is it?

Has it ever started?

Is every thing pluged in?

What does it sound like? (rotor / missing / how much does it cough / tough to ask over the net.)

[Adam_Cressi]

ithis my be an off topic sugestion, but inspect youyr fuel injector resistor..

[Wanabe_Garage]

These might be silly questions but;



Got Spark?

Got fuel?

Pulled the plugs out to check?

What car is this all in?

What ecu / loom is it?

Has it ever started?

Is every thing pluged in?

What does it sound like? (rotor / missing / how much does it cough / tough to ask over the net.)

Car is a ae86 and engine 4age 20v. ive been trying to start it for for the first time over past week. im certain the fuel circulates as ive gotton fuel to feed through the return line. You guys gave me ideas about timing and spark so ill check that after i put the wiring back in(assuming that is going to be correct)

All this feedback is making my troubleshoot list bigger.... which in a way is a good thing

[beeeeee]

air mixture with fuel correct?