Fresh Built 460, WONT START....please help!
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Freshman User
Joined: Sep 2001
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Fresh Built 460, WONT START....please help!
We got everything put on my engine and the time of truth came. It came and went. We are getting spark to the coil so we dont know what is going on. Any ideas on a fresh engine no start? I know you guys have some idea!
1965 F100 Custom Cab SWB, '76 460, C6
1965 F100 Custom Cab SWB, '76 460, C6
Post Fiend
Joined: Feb 2001
Posts: 6,624
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From: Missouri
Fresh Built 460, WONT START....please help!
You need three things to make a motor run. Fuel, air and fire. If you know you have spark at the plugs see if you have fuel. An easy way to tell if you have fuel is to pour a couple teapoons of gas into the carb and see if it fires. Make sure the timing is somewhat close to being right. The distributor could be 180* out.
Freshman User
Joined: Jul 2000
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From: Rocky Creek Ranch
Fresh Built 460, WONT START....please help!
Right, Gas Air Spark is what is needed, and of course the spark need to be on the compression stroke.
Use a compression guage connected to #1 cylinder (front right), hand crank engine, it should show a slight increase on the compression stroke, you can eyeball the timing mark, line up at about 10 degree BTDC and then line up the rotor with spark plug wire #1, firing order is 1-5-4-2-6-3-7-8
http://www.summitracing.com/tech/charts_guides/firing_order/tz_02charts_firing.htm
Hope that helps
Use a compression guage connected to #1 cylinder (front right), hand crank engine, it should show a slight increase on the compression stroke, you can eyeball the timing mark, line up at about 10 degree BTDC and then line up the rotor with spark plug wire #1, firing order is 1-5-4-2-6-3-7-8
http://www.summitracing.com/tech/charts_guides/firing_order/tz_02charts_firing.htm
Hope that helps
Posting Guru
Joined: Apr 2000
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From: Pryor
Fresh Built 460, WONT START....please help!
Also remember that Ford numbers their cylinders differently than Chevy does. I know several Chevy guys who have wired their Ford with the correct firing order but while using the wrong cylinders and the engine wouldn't run. With a Ford it's 1-4 down the passenger bank, then 5-8 down the driver's side.
Tuned
Joined: Feb 2000
Posts: 309
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From: michigan
Fresh Built 460, WONT START....please help!
i know it's hard to get things going, but try not to keep rolling your motor over and over with it not being able to start ( if your doing that ) . you will have a greater chance of hurting parts if you don't get it running the first time. especially the cam lobes and lifters, and all the bearings...... CJ. ....
Cargo Master
Joined: Jul 2000
Posts: 2,281
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From: Northern California
Fresh Built 460, WONT START....please help!
Every time that happens to me, it's always timming. I played with mine for hours and killed about 6 batteries trying to get the timming right. Usually you can tell if the timming is an issue because it'll try to start vs just spinning and not trying to kick. Also, if it kicks back at times that's usually timming too.
I changed the spark plug gap from 45 to 35 on mine and it made a big difference in starting. 35 started easy, 45 would barely start.
Another idea is to run the carb on some other simular engine to make sure it's tuned well.
I changed the spark plug gap from 45 to 35 on mine and it made a big difference in starting. 35 started easy, 45 would barely start.
Another idea is to run the carb on some other simular engine to make sure it's tuned well.
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Freshman User
Joined: Oct 2001
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Fresh Built 460, WONT START....please help!
An engine will probably start no mater what is going on with the carburetor as long as the accelerator pump is pumping gas!
My money is on cam timing! How careful about timing were you when you put the timing chain on? To check pull a valve cover, turn engine by hand until #1 cylinder is at split overlap, when both intake and exhaust valves are open equally, then check your timing marks, should be 0 deg BTDC. Less than 5 deg off won't keep the engine from starting!
My money is on cam timing! How careful about timing were you when you put the timing chain on? To check pull a valve cover, turn engine by hand until #1 cylinder is at split overlap, when both intake and exhaust valves are open equally, then check your timing marks, should be 0 deg BTDC. Less than 5 deg off won't keep the engine from starting!
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Freshman User
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Fresh Built 460, WONT START....please help!
Well I found spark going to the coil but not to the plug wires. My dads friend had the red wire from the module running to a wire on the voltage regulator not the coil. I spliced it into the coil and it fired up. Thank the Lord for wiring diagrams.
1965 F100 Custom Cab SWB, '76 460, C6
1965 F100 Custom Cab SWB, '76 460, C6
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Joined: Dec 2003
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This might sound dumb, I built a 76 f-250 with a hopped up 460, had everything dialed in and she started like a showroom truck then it died just as fast. I went through eveything front and back and found I had reversed the fuel lines coming off the mechanical feul pump. It's the little things that get ya.
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