1998 5.7 liter can not Time
April 9th, 2008, 9:24 PM
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1998 5.7 liter can not Time
Does anyone have any idea's that could help me? I pulled distibuter without marking it when I changed intake gaskets. I reinstalled
distributor with TDC & rotor pointing at the little 8 . No luck -- I do have 2 lines on my balance -- one is a manufactured groove and the other is a white chalk line. The white chalk line seems closest to TDC. I also have 2 white marks on bottom of distributor near rotor. One of the marks is next to the 8 on the flat spot of distributor and the other white mark is right of camshaft sensor plug. I have tried moving my distributer back and forth all over one gear at a time and I can not get it to fire. I read that the bottom of my distributer at the gear there is a half drilled hole that is supposed to line up with a white mark near that end of distributor shaft. But I do not have a white mark on there. I bought new cap and rotor -- I then had my wife turn the motor over with the ignition and I hear a spark sound. Come to find
out that the new cap was arking before I even set it on top of rotor. I reinstalled old cap and tried the same thing ( cap off and turned motor over using ignition - this time no spark so I am using the old cap for now) Hopefully someone has an idea for me -- I am thinking
about checking compression on all cylinders next? Could I have jumped a timing chain link? I hope not.
distributor with TDC & rotor pointing at the little 8 . No luck -- I do have 2 lines on my balance -- one is a manufactured groove and the other is a white chalk line. The white chalk line seems closest to TDC. I also have 2 white marks on bottom of distributor near rotor. One of the marks is next to the 8 on the flat spot of distributor and the other white mark is right of camshaft sensor plug. I have tried moving my distributer back and forth all over one gear at a time and I can not get it to fire. I read that the bottom of my distributer at the gear there is a half drilled hole that is supposed to line up with a white mark near that end of distributor shaft. But I do not have a white mark on there. I bought new cap and rotor -- I then had my wife turn the motor over with the ignition and I hear a spark sound. Come to find
out that the new cap was arking before I even set it on top of rotor. I reinstalled old cap and tried the same thing ( cap off and turned motor over using ignition - this time no spark so I am using the old cap for now) Hopefully someone has an idea for me -- I am thinking
about checking compression on all cylinders next? Could I have jumped a timing chain link? I hope not.
April 9th, 2008, 10:05 PM
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RE: 1998 5.7 liter can not Time
Welcome to the forum!!! I always hate taking out the distributor for this very reason. I would just keep playing with it. Someone here should be able to help, just hang in there.
April 10th, 2008, 9:17 PM
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RE: 1998 5.7 liter can not Time
Update on my problem's -- First " Thanks Northey for the encouragement " What I did !! I checked my compression on all cylinders (cold) and they were between 160 & 175 -- I think that is ok book says 150psi 20dp -- I then cleaned all plugs and installed checking all my wires -- Then I set TDC -- I used Manuf. groove this time and set rotor at the 8 a little ahead ( I know I did that before ) Walla presto it
STARTED!!!! Now I need to figure out how to make it run a little better -- purrrrs good at 1000 but higher and lower it is not. I hooked my computer to it and found 3 codes 102 , 122 , and camshaft positioner I forget #. I reset codes and 102&122 came back . Are they on because my timing is still off or are they the problem. what should my #1 piston timing be ? I think the computer said 20. Should I just run my truck a little while and it will clear itself out or should I adjust time one more gear? Not sure witch direction to go.
(102= Low input --- Mass air Flow) (122= Low input --- Throttle position sensor)
STARTED!!!! Now I need to figure out how to make it run a little better -- purrrrs good at 1000 but higher and lower it is not. I hooked my computer to it and found 3 codes 102 , 122 , and camshaft positioner I forget #. I reset codes and 102&122 came back . Are they on because my timing is still off or are they the problem. what should my #1 piston timing be ? I think the computer said 20. Should I just run my truck a little while and it will clear itself out or should I adjust time one more gear? Not sure witch direction to go.
(102= Low input --- Mass air Flow) (122= Low input --- Throttle position sensor)
April 11th, 2008, 9:00 PM
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RE: 1998 5.7 liter can not Time
Update to anyone that wants to read my sorrows. LOL --- I still have not been driving my truck --- I started troubleshooting it again today and found the mass air flow sensor code had gone away. "Hopefully it don't come back" I still have TPS code -- so I started checking voltages and sensor is getting 5 volts but nothing coming back. I tore it apart and cleaned -- was wet an dirty inside of TPS sensor (which I see is just a potentialometer of some sort) but something is not working inside of it. (It does work good to ground) but not to the computer. I checked napaonline and found them from 30 to 50 dollars. I read in the book and it says that the TPS sensor if broke can give an unstable idle so I hope that is the problem now. I have the camshaft postion sensor come back into alarm code again. Is this sensor going bad or is my timing still not right? Will it go away when I install a new TPS?
April 13th, 2008, 10:10 AM
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RE: 1998 5.7 liter can not Time
FINALLY I have never had a problem with my truck that took me a week to fix lol -- I changed out the Throttle postion sensor and that was the problem -- The mass air flow sensor code was on because I had the damn thing unhooked before. and then I advanced my timing one gear and my cam postion sensor code went away --- yah I am done -- Does Anyone now What the #1 cylinder timing advance should be ? My computer says it is around 20 at idle then it goes up to 28 degrees while i am driving -- But my haynes manual does not go in depth that far. --- Signin Out ---
April 25th, 2008, 3:46 AM
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RE: 1998 5.7 liter can not Time
Only way to set the timing on these is with a scanner. Must be+/- 2 deg.
Have to loosen dist hold down, set scanner toscan the CMPRET...rev to 1000rpm each time the dizzy is adjusted until you get the correct reading(above)...then tighten clamp.
Have to loosen dist hold down, set scanner toscan the CMPRET...rev to 1000rpm each time the dizzy is adjusted until you get the correct reading(above)...then tighten clamp.
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