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54 Chevy no spark no start
#1137120 Mon Nov 30 2015 11:18 PM
Joined: Dec 2012
Posts: 78
J
jer3545 Offline OP
Shop Shark
Well just maybe I can do this with some help ,because I am not real electrically incline but I have a spark tester and a mult-meter. I have no spark at the coil wire going to the distributer . I did at one time because I had it running this summer after I put a new coil, dist.cap, points , all spark wires & spark plugs. Clue;I had the ignition switch off to get new key made .I dont see any lose wire hanging ,and when I turn the key "ON" the batt.guage slightly moves toward dis. ,lights & horn work. what should I do next??Thank's for anything I can try .Like I said I do have a multi-meter and a spark tester. Thank's. Jerry


Jerry
Re: 54 Chevy no spark no start
jer3545 #1137122 Mon Nov 30 2015 11:46 PM
Joined: Apr 2014
Posts: 1,255
U
Shop Shark
What year/model/engine/6v/12v?

Don't leave that key in the "ON" position for too long if you aren't attempting to start.

Fully charged battery & Clean grounds? Is the wire from the coil's side to the distributor connected?
Manual for my year truck.
Brad

Last edited by Uncle Brad; Mon Nov 30 2015 11:50 PM. Reason: link

Wrench Fetcher, PhD
Re: 54 Chevy no spark no start
jer3545 #1137128 Mon Nov 30 2015 11:55 PM
Joined: Mar 2010
Posts: 9,660
5
'Bolter
By "no spark at the coil wire going to the distributor", do you mean no voltage?
Do you have voltage from the wire coming from the ignition switch at the coil?
If the answer to both of these questions in "yes", you either have dirty posts on the coil, a bad wire between the coil and the distributor, or a bad coil.
You can check all of these with your multimeter set on OHMS with the ignition off.
Carl

Re: 54 Chevy no spark no start
Uncle Brad #1137132 Tue Dec 01 2015 12:10 AM
Joined: Dec 2012
Posts: 78
J
jer3545 Offline OP
Shop Shark
Hey Uncle brad, this is a 54 chevy 235 in a 49 chevy truck and it has been converted to 12 volt . The wire from the coil is connected to the distributor and its tight it also has been replaced .


Jerry
Re: 54 Chevy no spark no start
52Carl #1137135 Tue Dec 01 2015 12:15 AM
Joined: Dec 2012
Posts: 78
J
jer3545 Offline OP
Shop Shark
Hi Carl , I cranked the engine and had a spark tester on the coil (plug) wire the big wire that goes to the center of the dist.cap. there was no spark . what you said about the multi meter check , not sure if I know how to do that check.


Jerry
Re: 54 Chevy no spark no start
jer3545 #1137137 Tue Dec 01 2015 12:21 AM
Joined: Dec 2012
Posts: 78
J
jer3545 Offline OP
Shop Shark
Carl, Im going back out there to see if Im getting voltage from key switch to coil.


Jerry
Re: 54 Chevy no spark no start
jer3545 #1137139 Tue Dec 01 2015 12:34 AM
Joined: Dec 2012
Posts: 78
J
jer3545 Offline OP
Shop Shark
ok, I put a test light on the pos.side of the coil and put the test light ground wire on a fender brace for ground and light did not light . The wire from the switch lights up . I believe its from the key switch goes up the firewall and over toward driverside in a wrap of wires.


Jerry
Re: 54 Chevy no spark no start
jer3545 #1137141 Tue Dec 01 2015 12:37 AM
Joined: Aug 2012
Posts: 1,743
V
Shop Shark
A few easy tests.
Remove dist cap and rotor button so you can see when points open and close.

1) Turn engine until the point are open.
2) turn key on, you shoulg read 8v - 12vdc on the "+" coil screw terminal and slightly less on the "-" terminal. If not your not getting any voltage to the coil.

Now turn engine until points are closed. You shouldn't read any volts (no voltage drop across a short).If you do the points contacts aren't conducting(file or replace) or the wire from the coil to the distributor is open (cut or bad connection at the terminals).

You should get spark out of the large high voltage coil wire by simply opening and closing the points with a non-conductive lever (to push the pints open and allow them to close again) with the key on.

Re: 54 Chevy no spark no start
jer3545 #1137143 Tue Dec 01 2015 12:40 AM
Joined: Dec 2012
Posts: 78
J
jer3545 Offline OP
Shop Shark
If I have a blown fuse on the fuse block could that be a start problem ??? I do have a fuse that looks blown but I have no cover for it so I dont know what it's for.


Jerry
Re: 54 Chevy no spark no start
Volfandt #1137146 Tue Dec 01 2015 12:49 AM
Joined: Dec 2012
Posts: 78
J
jer3545 Offline OP
Shop Shark
OK Volfandt I will do this check also .I appreciate all the help from every one . I KNOW IT'S A PROCESS OF ELIMINATION ,IT"S DOING IT THAT"S HARD .....LOL.


Jerry
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