headers installed, motor wont start
07-08-2009, 10:14 PM
#1
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headers installed, motor wont start I just installed headers into my ls1 and when i turn the ignition the motor turns over and then dies. I have no clue what could be going on here, any help? I'm uploading a clip right now
http://www.youtube.com/watch?v=yoVHzpnGiiM
http://www.youtube.com/watch?v=yoVHzpnGiiM
wtf was that???? sorry..
07-08-2009, 10:55 PM
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i also removed the egr and air systems.
also there is no oil pressure when I turn the key half way to the point where the fuel pump kicks on. I'm not positive but I'm think i remember there being oil pressure when the fuel pump turned on.
also there is no oil pressure when I turn the key half way to the point where the fuel pump kicks on. I'm not positive but I'm think i remember there being oil pressure when the fuel pump turned on.
Last edited by OneSlowCamaro; 07-08-2009 at 11:12 PM.
07-09-2009, 12:20 AM
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oil pressure should only start to build once the motor is started and running for about 2-3 seconds. There will be no oil pressure if the key is just on accessory, the engine needs to be running to build oil pressure.
if it runs for a few seconds then dies, check all plugs, make sure you didn't crack any of them putting the headers on, all plug wires are on nice a tight(and connected to the correct plugs obviously) check the coils again also.
if it runs for a few seconds then dies, check all plugs, make sure you didn't crack any of them putting the headers on, all plug wires are on nice a tight(and connected to the correct plugs obviously) check the coils again also.
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07-09-2009, 02:27 AM
#8
Did you have your Crankshaft Position Sensor unplugged? The CKPS is located on the passenger side of the block, just above the starter. I'm not 100% sure this is the problem. I'm not quite sure why it would fire just for a second, then die. I would check to be sure its plugged in nice and snug. Without the CKPS, the motor will just turnover, but never fire. I know I had mine disconnected when I did my headers, so it'd be worth a look. You could also check your oil level sensor on the same side on the outside of the oil pan. Again, check to be sure its plugged in good. I believe without it, the PCM can't read if there is any oil and would kill the engine. (Thats kinda a guess, but still worth looking at.) Good luck and keep us posted on what you find out.
Last edited by Mumbles; 07-09-2009 at 02:34 AM.
07-09-2009, 06:49 AM
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i don't have my egr blocked off yet, is that possibly the problem?
edit: yup. I feel stupid now, but thats how we learn. Thanks for all you're help
edit: yup. I feel stupid now, but thats how we learn. Thanks for all you're help
Last edited by OneSlowCamaro; 07-09-2009 at 06:58 AM.
07-09-2009, 04:35 PM
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07-09-2009, 06:44 PM
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it can mess them because they are much closer to the outside cooler air when you are running straight headers. I would at least put some turn downs on them if you plan on driving straight headers for very long