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Discussion Starter #1
i have 86 corolla (ae86). i have a no start problem i have spark,fuel. i have replace the fuel pump,mass air, coil, tps,injectors. still the damn car wont start. the timing is good everything seem to be working but it wont turn over. i did a compression and that was good. i dont know what else to check. help please. oh i even tried and changed the computer.
 

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sorry, I don't understand. You said it won't turn over. And you said it won't start. Just exactly what does it do when you turn the key???

is the timing belt broken? is the camshaft turning when you spin the engine?

:confused: :confused:
 

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ae101 levin&trueno
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And how do you do a compression test if the engine won't turn over??
 

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Discussion Starter #4
what i meant by turn over is not starting the car cranks. so thats how i checked compression.
the compression cyl1 175 cyl2 168 cyl3 161 cyl4 161. those where the numbers i got. sorry for the confusion. the timing belt is fine both cam are turning when the engine is cranking. thank in advance for the help.
 
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did you replace it with a good known working computer from same year and model?
 
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and its properly hooked up? thats so strange that you would get spark and fuel, have a known good computer and not start. have you recently done any maintence on the car with the wiring harness? check all of the engine grounds (especially around thermostat). here is what the FSM has to say if you have fuel, and spark.

High–tension cord disconnected or
broken
Vacuum leaks
PCV line

EGR line (Calif. and 4WD )

Intake manifold

Throttle body

Brake booster line

 

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Discussion Starter #8
all those i have checked everything except the throttle body. i did replace the tps. would there be any other way to test the throttle body?
 

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Did you take out a spark plug attach it to spark plug cable and ground plug body to ground and check for spark while cranking? If you don't see a strong spark you have an ignition issue. Did you try removing a spark plug spray starting fluid in cylinder reinstall plug and crank to see if it runs and then stops? If so you have a fuel supply issue.
 

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does the engine try to starts? doe sit making popping sounds, any misfires? or just turns with no hint of trying to fire?

Also taking a spark plug out, like already entioned and watching to see if it sparks would help... has anyone worke dont he car at all before it stopped running?

if so, what did they do??
sorry if any of these have already been answered..

if you prime the carb, or where you on Chicago, maybe use starter fluid (for extreme cold), to see if it starts.. If it's real cold, you could have icing in the fuel lines from unkown moisture..

if you put anyting into the carb, be very careful, don't want any fires with an open carb and one misfire and flames everywhere..

good luck..
:cool:
 

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Discussion Starter #11
i have strong spark. yes i pulled the plug and used a spark tester. i have done another compression test after i pulled the spark plug out again and it was full of oil. this time i only got 75 from cyl 1.
 

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Discussion Starter #12
its not cold enough for the fuel lines to freeze. i took out the fuel rail and injectors. turn the key on position and all injectors sprayed. i think i have a dead cylinder.
 

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ae101 levin&trueno
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Even If you had a dead cylinder it would still run on 3.

Changed you timing at all?
100% sure that all the plugs are pluged in?

You don't have an air leak?
 

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Just on an off note. Check your fuses and look for an engine fuse or ignition fuse. Oh yeah make sure you didnt kick one of your wire loose on the back of the ECU. Good Luck
 

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Discussion Starter #16
when it did start it sounded like it was a fuel problem. if you would try and give it gas it would die. the timing is correct the belt is fairly new. i checked all of the fuses and relays they are all good. there are no loose connections. the car was fine and one day it started to stutter after that it wouldnt start.
 

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fuel pressure could still be low. with the line disocnnected it could stil pump gas,,, but under pressure it could be weak..

when you look down in the carb and pull the throttle linkage, does the primary pump squirt gas??

With Engine OFF!
 
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soarin00gtmgonz said:
thanks for advice but the car is efi
even with efi the pump could be on its way out only giving minimal pressure, enough to turn on that one time but not anymore.
 
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