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Re: [oletrucks] No Spark, Where to Start Looking?

To: oletrucks@autox.team.net
Subject: Re: [oletrucks] No Spark, Where to Start Looking?
From: SnappyDog1@aol.com
Date: Mon, 13 Nov 2000 21:31:03 EST
By "no spark", do mean that the engine isn't firing when you crank, or that 
you've already checked and there isn't any juice reaching the plugs?
Assuming the former, a quick check is to pull the carb, plug the fuel line, 
spray a little starting fluid into the manifold and give it a crank.  If it 
fires, your problem is fuel and not ignition related, assuming that your 
timing is set somewhere in the ballpark.
To check your ignition system, I'd start by checking for voltage at the 
positive terminal on the coil with your multimeter.  Got juice? So far so 
good.  Second, I'd take off the distributer cap, and turn the fan until the 
points are closed.  Turn on the ignition, and take a small stick and open the 
points.  You should see a small spark at the points when you do this.  If 
not, you might want to replace the condenser and try again.  If that doesn't 
work, you might need a new coil.  If you're getting a spark at the points, 
take out a plug, reconnect the plug wire, hold the body of the plug to some 
good ground point on the block and have someone crank the starter.  Does the 
plug spark?  If not, get a new cap and rotor, and take a real good look at 
the spark plug wires.  If it sparks, then you're getting juice to the plugs 
(or at least one of them) and your problem isn't ignition but probably 
timing, fuel, or poor compression.


Barrett Revis
Sparks, NV

'53 3105
'48 3105

oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959

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