urgent help??? - Toyota Nation Forum : Toyota Car and Truck Forums

nadaok · 09-05-2011, 04:37 PM

hi there ....i appreciate any one who can help me with my problem .
briefly , i just replced my O-ring ..fuel injector +fuel filter on my toyota corolla 1991 AE100-5A-FE engine ....after that i tried to start the car but not staring , it crank but no start ....i thought it was the fuel pump [relay ,fuel pump it self ]..after one and half month wasted , i found it working ,after that , i checked all the sensors [ MAP sensor ,knok sensor ,,ect ]..they all work..and i wasted it another month on that ,..after this i start to test the ignition and found i have weak spark on all the spark wires ,i did cheked the coil ignition resistance [ primary 1.6 ohms and secondry 12 ohms ]..and that is ok ...

now i do not know how to make the spark strong.....my budget

it is very low and i lost my job because the time wasted to check my car ....i appreciate and thanks in advance to any one who can help me with my weak spark problem
thanks for reading

sincity.rolla · 09-05-2011, 10:39 PM

Check the spark plug cables. If they loose resistance u wont spark right. Although I do not remember what spec is for it... if u haven't check the dizzy cap and rotor for wear.

nadaok · 09-06-2011, 12:30 AM

thank you rolla ...for your reply ... i have checked all the wires and they are with the specification .... so do you think may be the condenser , or the igniter are faulty ??

thanks again

sincity.rolla · 09-07-2011, 12:51 AM

Sorry too so long the ignitor can be going bad as well.

nadaok · 09-07-2011, 03:36 PM

thank you rolla ...for your reply ....so is there any way to check the igniter ?? to make sure it is working ......i have checked the spark today and i saw it has white spark not blue ...is that good enough to start my car ???? thanks

90 GP · 09-07-2011, 04:40 PM

Did you try spraying starter fluid in throttle body to see if it would start? If it starts and then stalls you still have fuel delivery issues. Check EFI fuse in black fuse box under the hood it could have blown.

sincity.rolla · 09-07-2011, 10:29 PM

http://www.tegger.com/hondafaq/ignit...r-testing.html

Try that see if it helps. There was another way to do it but can't remember. Every spark I've seen has a hint of blue in it. Hope that helps a bit. Good luck hope u get it worked out

jordanangel · 09-08-2011, 04:33 AM

also might wanna check your pick up coils in the distributor, i had mine go out one day coming home from the races and it died like it had lost fuel and did a bunch of test then took a good look in the distributor and what do you know i could see one of my pick up coils had blown, had to replace the distributor cuz it really wasn't a part i could just buy separate sadly. it was giving me low spark like yours

nadaok · 09-08-2011, 02:20 PM

thanks in advance to every one who is supporting me to get my car back on the road ... ....currently the car trying to catch the start then stalled .....my friends said that white spark are good and enough to start the car .....but they said that my engine is flooded with petrol and that what caused to weak spark and misfire ...so they think it is internal leak in the injector ....??

i have tested the coil resistance on the injector and it showing correct ...so should i try to clean the injector ....??? can some one please tell how to do that ??

ToyotaBrendan · 09-13-2011, 01:01 PM

check the oil, you may have an injector stuck on and filling the motor with fuel then it sits and finds its way down to the oil. See if the oil smells like gas, if it does change the oil and pull your injectors and turn the key to "ON" position do not start and see if one of them is dripping/leaking. Once there's too much fluid in the pan (gas or oil or both mixed) it will not start. Had this happen on a nissan 2.4 and we have to drain out about 4 gallons of gas/oil and pull the plugs and crank it out until it was dry. new oil and it started back up.

If the car has spark, you either have no fuel or too much. or no compression. Hope this helps!

nadaok · 09-14-2011, 03:46 AM

thank you brenden for your reply ...every one keep telling me that if the spark are weak will cause engine flooded with fuel .....i have checked the spark and saw white color .....not blue ...so is that weak ??? if the igniter is bad will cause a weak spark , even if you have a good coil ??

thanks again and hope some one can answer me about the good spark

ToyotaBrendan · 09-14-2011, 06:52 PM

Pull off the distributor cap and inspect the contacts inside it, also inspect the rotor contacts. These get really worn and crappy over time and can cause a weak spark. Also, if your plug wires do not come off te distributor cap, go ahead and change cap, rotor, and plug wires because they are probably original. I had a s10 blazer that actually died on the freeway and would
Not restart the cap an rotor got so bad. Pull a spark plug out is it wet and does the tune down in the engine smell wet? If so weak spark. Check make sure your coil mounts are tight it may ground through the mounts.