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11-19-2003, 03:50 AM
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#1 |
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Registered User
Join Date: Jan 2003
Location: Cold, Snowy High Level, Alberta Canada Eh
Posts: 394
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Losing Spark
Got my truck back together, and went to fire the engine. engine turns, no spark. At all, on any plug. change coil/cap/rotor, had spark for a minute, then its all gone. i dont get it. Engine ran fine before it came out, and now it wont even give me spark. anybody got any ideas? its a daily driver so i need it bad. thanx in advance
dale
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2003 yamaha raptor. Stock, but it still hauls!!!! 2000 skiddo mxz 700. Camoplast 1.5 inch track, jaws twin pipes, b+b can, custom built and weighted clutch, wiseco piston, high comp heads. its very fast. wow. 72 c-10 longbox. Bright Orange. Brand new 350, rv cam, performer intake, qjet, headers, 2 1/2 inch exhaust into hooker areo chamber mufflers. Body work coming soon. "dont let yer mind wander, its to little to go places by itself." "Forget the herse, cause i'll never die"-ACDC Back In Black "If It's To Loud, Yer Just Too Old" "I Love Anything Fast Enough To Do Something Stupid In" "Instant idiot, just add beer!!"" |
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11-19-2003, 05:04 AM
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#2 |
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Registered User
Join Date: Mar 2001
Location: springfield ill
Posts: 836
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only thing i can thing of is check your grounds
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springfield illinois 2003 custom (harley)built from scratch 68 swb |
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11-19-2003, 05:28 AM
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#3 |
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Black 72 Chevy
Join Date: May 2002
Location: Los Angeles, California
Posts: 662
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orange72350
Is this distributor HEI or points? If its HEI your module might of died and that privents the spark.
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72 Chevy, SWB, 350engine, TH400 |
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11-19-2003, 10:20 AM
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#4 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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double check your wiring, also if you've changed from points to hei you can't use the original wiring, GROUNDS
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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11-19-2003, 11:40 AM
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#5 |
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Merciless Butcher
Join Date: Oct 2003
Location: CC Nevada
Posts: 1,447
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I know this sounds pretty basic.....But do you have a good power connection to the distributor? I once had the same problem and it turned out to be the ignition switch. Get a test light, put it to the hot wire to the distributor on the firewall bulkhead connector and have a helper turn the key. If no power, try replacing the ignition switch.
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Your Bought And Sold....I Got Your Soul! |
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11-19-2003, 12:07 PM
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#6 |
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Registered User
Join Date: Aug 2001
Location: Santa Fe Springs, CA,USA
Posts: 1,579
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Not to hijack the thread but had the same thing last night. I have HEI. Just put a new cap and coil in 1 month before. Think I might have fried the module?
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70 shortbed stepside "Schleprock" 350 w/TH400 rallys and BFGs -We can rebuild it, we have the technology-lower,shinier,faster |
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11-19-2003, 01:32 PM
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#7 |
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Registered User
Join Date: Aug 2001
Location: Santa Fe Springs, CA,USA
Posts: 1,579
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ttt
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70 shortbed stepside "Schleprock" 350 w/TH400 rallys and BFGs -We can rebuild it, we have the technology-lower,shinier,faster |
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11-19-2003, 01:48 PM
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#8 |
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Wiseass secured himself a BAN
Join Date: Nov 2000
Location: MOON!!!
Posts: 2,282
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We really need to know what type of disty you have. Grab your self a digital multimeter and see where you are gettting power and where you are not. I don't thing it is a ground, there are just to many grounding points on a engine. Give it a try....
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11-19-2003, 02:06 PM
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#9 |
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Registered User
Join Date: Aug 2001
Location: Santa Fe Springs, CA,USA
Posts: 1,579
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Dumb question, on an HEI, if its the module, do I need to replace the whole dizzy?
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70 shortbed stepside "Schleprock" 350 w/TH400 rallys and BFGs -We can rebuild it, we have the technology-lower,shinier,faster |
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11-19-2003, 02:19 PM
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#10 |
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Live life and be happy.
Join Date: May 2003
Location: Spokane,Washington
Posts: 266
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PaintPyro you can just replace the module. Usually 2 screws hold it in the dizzy.
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11-19-2003, 02:24 PM
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#11 |
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Registered User
Join Date: Aug 2001
Location: Santa Fe Springs, CA,USA
Posts: 1,579
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Cool, thanks. Any idea on how much they run. Should be an Autozone part right?
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70 shortbed stepside "Schleprock" 350 w/TH400 rallys and BFGs -We can rebuild it, we have the technology-lower,shinier,faster |
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11-19-2003, 02:29 PM
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#12 |
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Wiseass secured himself a BAN
Join Date: Nov 2000
Location: MOON!!!
Posts: 2,282
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They run about $15- $25 at Autozone.....
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11-19-2003, 02:52 PM
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#13 |
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Registered User
Join Date: Aug 2001
Location: Santa Fe Springs, CA,USA
Posts: 1,579
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Thanks, it cranks and cranks, plenty of fuel, but just wont spark.
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70 shortbed stepside "Schleprock" 350 w/TH400 rallys and BFGs -We can rebuild it, we have the technology-lower,shinier,faster |
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11-20-2003, 03:59 AM
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#14 |
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Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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I heard this, but I don't know for sure. Someone said if you hook a test light up between the tach terminal of an HEI & ground, that it will flash while cranking if the module is good. Anybody know if this is true or not?
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11-20-2003, 02:07 PM
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#15 |
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Young Gun wth Fast Inline
Join Date: Jan 2002
Location: Idaho
Posts: 1,475
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Sounds like it should work with the test light. You should at least get some light out of it, but it might blow your light also. cause it flashes fast.
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1967 Chevrolet LWB with built 292! 415 ft. lbs of torque, 4 speed :O with 27% overdrive too, 3.73 Posi. Frame and body done... getting painted!!! |
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11-22-2003, 11:34 PM
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#16 |
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Cause the Chicks DIG IT!!
Join Date: Nov 2003
Location: Beaufort SC
Posts: 509
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Hey i might be the new guy but this is definitely a subject i know about. If you got HEI which i gather you do I'd check to see if you got power going into the distributor first. You can do this by simply placing the ignition in the run position and swiping the end of the wire against a ground. Sparks should fly but if they don't you can either find the problem or run a new wire. If you run a new wire just find a keyed hot on the fuse panel, it's pretty simple. If you do get juice make sure if you got a tach wire it isn't touching it either when its plugged in. This will ground it out and you won't get anything. i doubt your coils bad. You can have your ignition module tested at any local parts store but i doubt thats your problem either. when they go bad you will be able to start the truck when its cold, but as soon as it heats up it will die and get no spark. The only other possible problem you could have is a bad pick up coil. It's located underneath the rotor and is hooked up to the vacuum advance canister. To get it out of there you will need to take the retaining pin out of the bottom of the shaft right under the gear. Then knock off the gear and the hole shaft will pull out. Then it's just a couple of bolts but just remember how you pulled it apart, and don't loose you little retaining pin. It's all pretty simple and you don't need any schnazzy tools to do it. Good Luck!!!
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11-22-2003, 11:50 PM
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#17 |
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Registered User
Join Date: Jul 2003
Location: Cypress, Tx
Posts: 4,005
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One thing to add is make sure you are getting power to the distributor when the key is in the crank position AND the run position.I was having a similar problem (I had inadvertantly switched 2 wires) and my Distributor was getting power in the run position, but not during cranking. Hope this helps alittle.
Shawn
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1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE |
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