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2004 GS300 no start after headgasket job NO SPARK!
Hi CL, So Ive completed head gasket and whole timing kit job yesterday. Project took me about a week, it wasnt too hard. I had to find off time here and there through my work schedule which was the hardest thing for this project.
Anyways, motor cranks over but doesnt start. No CEL. It does wanna crank up and run for split second occasionally.
So far Ive checked,
Timing marks on cams and crank pulley which are dead on.
Fuel pump and fuel. Its working fine.
No vacuum leaks.
All sensors plugged up. Ive checked it through code reader as well.
Ground wires are bolted on IM. (2 sets)
Ive taken out no.1 spark plug wire and used old plug to see if theres a spark while cranking the motor....NO SPARK
Only thing I can think of is that crank position sensor is faulty but theres no CEL for it or I didnt have to take it off when I did the timing components. Everything was working fine before the project, my car always started right up without any problem or CEL, it was just using water. My crank gear teeth are fine as well no damage.
Any ideas? I dont understand what causing motor to not firing....Thanks in advance.
I mean Id figure after car sat up for about only a week or so and then that wouldnt cause my igniter, coils and other ignition components to fail.....That doesnt make sense to me. When I removed and reinstalled them back on, Ive used electronic cleaner spray to clean and inspect the parts/sensor through as well. Coils look very old but literally everything was working fine before then,,,
I'm trying to think of what all is involved.. There is the cam sensor going into the head from the drivers side. Temp sensor more forward on the same side if I'm not mistaken. You've made sure these are plugged in.. Can you get to the temp sensor to ohm check it with the intake on? If it got damaged and reads open, many cars (not sure about this car) will not start without a engine temp sensor reading.
Yes they are plugged in. Ive taken the temp sensor and cam angle sensor off prior to dropping the head off to machine shop to resurface/pressure test. After I got the head back from machine shop I simply snugged them back on.
How many ground wires are there? Ive recconected 2 wires to IM and I see there's one at firewall to pass side of head and main big gauge groubd wire to the block. I think grounds are ok. Maybe I'm missing something?
Timing looks dead on to me. I can feel the all of the compression strokes through revolutions turning it by 1/2 inch rachet. Spark plugs in. Ex cam maybe a half tooth off???
Also checked its not the immobilizer. The red blinking light disappear as soon as I insert the key. Ive tried this with master and spare master. I'm gonna do the spark test tonight after I get off work just in case. Maybe my original coils went bad by cleaning it and reinstall?
Whenever I disconnect my battery for anything I have a hard time starting it for the first time. A couple of cranks and playing with the gas pedal will get it to run like **** till the computer balances everything out
Do those timing marks look right to you? Maybe I'm having fried ECU. But also chances are pretty low because I disconnected battery before started working on cars. Ive taken the EFI relay out and tried to start it but no CEL. Maybe its bad ECU.
Just tested for spark no spark in all 6 cylinders but compressions turned out to be great. Now I'm really leaning toward to ground issues or some sort of electronic problem.
No spark can come from any 1 of several sensors that the ECU isn't seeing. I think you just have an issue with the crank sensor or something like that. I'm not there to test, so can't know.
06-05-19, 05:33 PM
2004 GS300 no start after headgasket job NO SPARK!
