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Fire problem

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marco_chevy

Number of posts : 88
Location : quebec
Registration date : 2015-05-23

Fire problem

Post by marco_chevy on Sat Jun 25, 2016 9:05 pm

This afternoon, i was on Highway at 65 mph whit my girldriend and my 2 kids and pof, paf 2 - 3 Times. I finally stop and motor go off. Chek for gaz and look ok but really big pressure when remove the gaz cap. i finally Chek the 2 front plug and have no fire when starting. So problem is coil ? I think i Will Put A new msd électronic !
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donivan65
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Number of posts : 11431
Location : San Diego, California
Registration date : 2008-05-12

Re: Fire problem

Post by donivan65 on Sat Jun 25, 2016 10:53 pm

do you have a 6 cylinder,,,,,do you have points and condenser,,,,do you have spark to the rest of the spark plugs,,,,,does it start,,,,,,does the rotor turn,,,,,,,could be a bad distributor cap,,,,,,or wires,,,,,
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marco_chevy

Number of posts : 88
Location : quebec
Registration date : 2015-05-23

Re: Fire problem

Post by marco_chevy on Sun Jun 26, 2016 5:33 am

V8 307 whit condenser and points. Motor turn but dont fire up. All was running fine. I have about 500 miles done whit It. On high way , all was ok and pif par pof. Big Back fire . Since that , i start and motor dont have sound. I only Chek the 2 first plug at the front I disconnect the Wire in the center of the cap ( from coil ) and put It on the air cleaner cover, start and have no spark. Where is the condenser ? Before Or After the coil ?
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donivan65
Governor
Governor

Number of posts : 11431
Location : San Diego, California
Registration date : 2008-05-12

Re: Fire problem

Post by donivan65 on Sun Jun 26, 2016 8:08 am

maybe it jumped time,,,,,,you got to have spark and at the right time,,,,,,take a test light, hook it to ground,,,,,,touch the tip to the little wire on the coil,,,,,crank the engine,,,,,the little wire to the distributor should blink while you are cranking the engine,,,,,,,,when you pull the coil wire out of the distributor, crank it and hold it to some metal, do you get spark,,,,,,,we got to start checking at the beginning and work our way down to the spark plugs,,,,,
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marco_chevy

Number of posts : 88
Location : quebec
Registration date : 2015-05-23

Re: Fire problem

Post by marco_chevy on Sun Jun 26, 2016 10:22 am

When i put the coil Wire that go in the middle of the cap, on the Metal of air filter cover, crank engin and have nothing. Only A very small spark when put inition on and off. Buy when start , no spark. Nothing. Condenser is before Or after the coil ?
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donivan65
Governor
Governor

Number of posts : 11431
Location : San Diego, California
Registration date : 2008-05-12

Re: Fire problem

Post by donivan65 on Sun Jun 26, 2016 11:09 am

ok,,,,you got no spark,,,,,,the points fire the coil,,,,,the condenser kinda give the points the juice to send to the coil,,,,,it is a round shiny thing right next to the points,,,,,but you need to go back further,,,,,does the coil get voltage at its + terminal when you turn the key on and when you are cranking the engine,,,,,,and on the little - terminal wire on the coil , it has to BLINK the test light when you are cranking the engine,,,,,,,the coil aint going to spark unless both little wires on it get a signal,,,,thats where you use a test light to see if the signals are there,,,,,,now we are talking about the ORIGINAL distributer,,,,not a HEI or aftermarket electronic conversion, right?

you see the rotor turning when you are cranking the engine,,,right?
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marco_chevy

Number of posts : 88
Location : quebec
Registration date : 2015-05-23

Re: Fire problem

Post by marco_chevy on Sun Jun 26, 2016 12:10 pm

I Think i Will put A msd Or proform hei électronic , but curious to see what is the problem.
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marco_chevy

Number of posts : 88
Location : quebec
Registration date : 2015-05-23

Re: Fire problem

Post by marco_chevy on Sun Jun 26, 2016 6:59 pm

Made some test this evening. Power ok on + coil. But no blink from the - coil. I Remove the cap , move the point whit A screwdriver, and Now have blink in the - coil. Put back the cap and motor start 1/4 turn. So the point was stay open Sad. Need to be changed ( new 500 miles ago from the seller ) . Or change all for hei msd.
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donivan65
Governor
Governor

Number of posts : 11431
Location : San Diego, California
Registration date : 2008-05-12

Re: Fire problem

Post by donivan65 on Sun Jun 26, 2016 7:53 pm

either the points were dirty from oil or maybe the breaker plate lost its ground because it always is being moved by the vacuum advance,,,that could be what happened,,,on that - terminal,,,,points open turns light on,,,,,points closed wont turn the light on,,,,points closing and opening is what causes the light to blink,,,,but your problem is in that distributor,,,,
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marco_chevy

Number of posts : 88
Location : quebec
Registration date : 2015-05-23

Re: Fire problem

Post by marco_chevy on Sun Jun 26, 2016 7:55 pm

Whitch hei is Nice for that motor ? Msd , proform ?
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donivan65
Governor
Governor

Number of posts : 11431
Location : San Diego, California
Registration date : 2008-05-12

Re: Fire problem

Post by donivan65 on Sun Jun 26, 2016 8:23 pm

also,,,,,,the coil needs 6 volts,,,,,,so there is a ballast resistor in the wire that goes to the + to cut the 12 volts down to 6,,,,,,,,,,,12 volts also burns out the points,,,,,now these red HEI distributors only need one 12 volt wire to run them,,,,,,and you need different spark plug wires with them,,,,,


http://www.ebay.com/itm/SBC-Bbc-Small-Block-Chevy-Hei-Distributor-Extreme-65k-Coil-Red-350-383-454-/191427260686?hash=item2c91f4310e:g:yXAAAOSwJQdW-YLz&vxp=mtr
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donivan65
Governor
Governor

Number of posts : 11431
Location : San Diego, California
Registration date : 2008-05-12

Re: Fire problem

Post by donivan65 on Sun Jun 26, 2016 8:30 pm

do you have the 2nd Gen v8 doghouse or the engine squeezed into a 1st gen 6 cylinder one,,,,,,,
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marco_chevy

Number of posts : 88
Location : quebec
Registration date : 2015-05-23

Re: Fire problem

Post by marco_chevy on Mon Jun 27, 2016 2:25 am

Original v8 307 1969
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marco_chevy

Number of posts : 88
Location : quebec
Registration date : 2015-05-23

Re: Fire problem

Post by marco_chevy on Mon Jun 27, 2016 6:17 am

Better change for complète heu Or juste the module conversion whit peteonix ?
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donivan65
Governor
Governor

Number of posts : 11431
Location : San Diego, California
Registration date : 2008-05-12

Re: Fire problem

Post by donivan65 on Mon Jun 27, 2016 8:00 am

......now we need some help here,,,,,,,,,,anybody have an 8 cylinder  HEI distributor in their 2nd Gen,,,,,,they have the coil built onto the top of the cap and that makes them bigger and might not fit,,,,,,,my friends are running those points conversion kits in their vans,,,,,,,,
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marco_chevy

Number of posts : 88
Location : quebec
Registration date : 2015-05-23

Re: Fire problem

Post by marco_chevy on Mon Jun 27, 2016 8:21 am

I think i Will go whit conversion kit. Same distributor.
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donivan65
Governor
Governor

Number of posts : 11431
Location : San Diego, California
Registration date : 2008-05-12

Re: Fire problem

Post by donivan65 on Mon Jun 27, 2016 9:08 am

that will work for sure,,,,,,,
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m1dadio
Chevy Guru

Number of posts : 1708
Location : Victoria B.C.
Registration date : 2008-10-06

Re: Fire problem

Post by m1dadio on Wed Jun 29, 2016 10:34 pm

I put the HEi in the 68 307. No problems, simple and clean.


and thats the Malory one with the larger coil cover cap



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