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Cranks Won't Start Test
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Tcash
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PostPosted: Sun Nov 18, 2012 7:27 pm    Post subject: Cranks Won't Start Test Reply with quote

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These are the first things I grab to isolate a cranks won't start problem.

Starter Fluid. If it fires on this you have a fuel problem.
Please read and understand the directions.
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Spark Tester. No Spark you have an Ignition problem.
Be aware these are made for both Points Ignition, which includes electronic points, ie Pertronix etc.
and HEI (high energy ignition) systems.

So get the one you need for your vehicle and read and understand the instructions.
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Link


Or if you don't have those on hand.
As mentioned first thing you need to do is determine if it is
1. Fuel
Pour a couple of table spoons of gas down the carburetor throat and try and start it.
If it starts or tries to, it is a fuel problem.

2. Electrical
Test for spark. What you are looking for is a nice hot blue flame. Not an Orange or Yellow flame they are too cold.
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Last edited by Tcash on Tue Jul 25, 2017 10:33 pm; edited 10 times in total
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VDubTech
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PostPosted: Sun Nov 18, 2012 7:32 pm    Post subject: Reply with quote

Unless you really like a cracked piston, stay away from starting fluid. Is there a point to your post?
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busdaddy
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PostPosted: Sun Nov 18, 2012 7:40 pm    Post subject: Reply with quote

Indeed, why the starting fluid? OWCH!!!! A spoonfull of gas will do the same thing without the needless super low octane and permanent engine damage.
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Tcash
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PostPosted: Wed Jun 03, 2015 8:38 pm    Post subject: Re: Cranks Won't Start Reply with quote

Tcash wrote:
These are the first things I grab to isolate a cranks won't start problem.
Starter Fluid. Please read and understand the directions. If it fires on this you have a fuel problem.
Image may have been reduced in size. Click image to view fullscreen.

Spark Tester. No Spark you have an Ignition problem. Be aware these are made for Points Ignition and Electronic Ign. So get the one you need for your vehicle and read and understand the instructions.
Image may have been reduced in size. Click image to view fullscreen.
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lil-jinx Premium Member
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PostPosted: Thu Jun 04, 2015 3:46 am    Post subject: Reply with quote

I have often used WD-40 as a starting fluid.
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SGKent Premium Member
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PostPosted: Thu Jun 04, 2015 7:57 am    Post subject: Reply with quote

I had read WD-40 was not that flammable so once I cleaned a small saw motor bearing of sawdust using it. The saw became a small jet engine the first time it was used, throwing flames about 3'.
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bbrowncods
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PostPosted: Mon Jan 29, 2018 3:16 pm    Post subject: Re: Cranks Won't Start Test Reply with quote

I once sprayed out a distributor with WD-40 and put the cap back on. Got in to crank it up. I heard a pop and it wouldn't start. Went back and opened the lid. The distributor cap was in about a thousand pieces!
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