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Post by windturbine1 on Nov 29, 2009 13:43:16 GMT -8
when we went snow running on friday i had a little electrical fire. i burnt 3 plug wires on one side and a few vacuum lines. it still ran so i was able to drive it down the mountain. it did run real rough and at lower rpm it would die. i got it home and replaced the plug wires. it wouldnt start. i pulled the plugs and cleaned them. a few were pretty fuel fowled. i put them back in and still no fire. im looking for either a confirmation that the plugs are too fowled after cleaning and need to be replaced or something else that im not thinking about. like i said it did run and start after the fire. any input from anyone will be greatly appreciated. thanks.
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Post by anglebar on Nov 29, 2009 17:59:17 GMT -8
Did you repair the vacuum lines? Kinda strange it will not start now but did after the fire..... How old are the plugs? I'd swap em out for a new set, plugs are not too much. What caused the fire?
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Wyldman
Active Member
Safety & Education Chairman
IXOYE
Posts: 643
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Post by Wyldman on Nov 29, 2009 21:36:58 GMT -8
I would check to see if any other wires were burnt like a coil wire from the battery or an ignition wire.
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Post by windturbine1 on Nov 29, 2009 21:50:03 GMT -8
i checked the wiring and cant find any that are burnt. the troubling thing is that it ran after the fire. i replaced the plug wires and now it wont start. we were on the 41 road and i drove it out and over to 4 corners and down into orchards withe the damaged wiring. now no spark. it sounds like it wants to but it just wont light.
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Post by scrambledbill on Nov 30, 2009 9:12:00 GMT -8
did you get the plugwires on the right plugs???
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Post by fivendime on Nov 30, 2009 9:46:40 GMT -8
Does it have points, may want to see if you fried them? Long shot but easy check.
Also could you explain what its doing like, just clicking when you turn the key, or is it turning over, or does it pop while turning it over like it wants to fire. Try pouring some gas down the carb if it has one. If no ignition then backtrack from plugs to coil to distributor.....Check fuses and connections as well.
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Post by windturbine1 on Nov 30, 2009 10:33:29 GMT -8
it turns over but no fire. it does backfire after a while of cranking on it. its getting plenty of fuel. its electronic ignition. i did double check that the firing order was correct. it sounds like it wants to start then nothing.
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Post by anglebar on Nov 30, 2009 10:53:14 GMT -8
I check the ignition module inside the distributor. I have lost a few of them, a good idea to keep a spare handy.
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tonka
Ok to Drive
My Heep
Posts: 256
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Post by tonka on Dec 2, 2009 6:31:28 GMT -8
If it is backfiring you have spark. sounds like you crossed up some plug wires Firing order is 18436572 goes clockwise on dist. put #1 at TDC pull cap Aline rotor to find #1
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Post by windturbine1 on Dec 6, 2009 13:59:47 GMT -8
ok here is the situation. i checked the firing order. ok. i checked TDC. ok. i replaced the plugs and the wires. it wants to catch but then nothing. its getting plenty of fuel. it seems like its not getting enough spark. it stumbles like it wants to start for a second then nothing. could it be the cap and rotor. they were new in march of this year. i did drive it from the 41 road to orchards on 5 cylinders and vacuum leaks. now with new plugs and wires and the vacuum lines fixed it wont start. my cell is 360-326-5813. please call if im overlooking something. it seems like after the initial stumble the ignition shuts off. thanks guys.
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Post by windturbine1 on Dec 6, 2009 14:36:33 GMT -8
ok i did some checking and i have power from the coil to the distributer. i have spark at number 1 plug. this is very puzzling.
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Post by hootie on Dec 6, 2009 14:54:51 GMT -8
is your burb fuel injected? If so... then disconnect the battery.. charge it.. and try again.. will do two things. fuel injected needs GOOD power.. And... that time disconnected will reset the computer which may have adjusted for the bad running condition and will need the reset to get it running.. ( would readjust itself IF the truck would start and run for 10 minutes )
no need to respond.. just a couple more ideas for you. Dave.
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Post by toyrocs on Dec 6, 2009 15:39:21 GMT -8
Do an INTERNET search on early GM (V8) electronic ignition problems.
Gm electronic ignition systems of this vintage had poor ignition modules including the coil. If I remember correctly the coil/ module is under/ near the rotor in the distributor.
I have seen problems in this area with similar complete failures like yours. There are ignition upgrades from after-market suppliers like Accell , Mallory to name a few.
Toyrocs
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Post by windturbine1 on Dec 6, 2009 18:52:06 GMT -8
ive been talking to mudmadness and we think that its the cap. i will be changing the cap,rotor and the coil. hopefully that will do it. i appreciate all the feedback from everyone. its been helpfull. i really need to get the truck going so i dont miss any more runs.
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Post by racincowboy on Dec 7, 2009 9:19:12 GMT -8
I have had trouble with caps on my chevy truck as well. I am running a MSD 6AL box with the accel hi fire coil. When I was driving it daily I would go through a cap and rotor about every 8 months or so. I would melt the striker right off the rotor and just shut off and wouldnt even fire after that.
I would try the cap and rotor and make sure there is no wires you missed if they got burned and fell behind the motor. Good luck.
Lance
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