engine turns over but won't crank

grabbitwilson · Post by **grabbitwilson** » Sat Sep 01, 2012 6:56 pm

Took motor out of a 79 ford. It ran fine in that truck. Put it in a 72 ford and cant seem to get it to start. It turns over all day but wont crank any suggestion

fireguywtc · Post by **fireguywtc** » Sat Sep 01, 2012 10:23 pm

from Texas!

basketcase0302 · Post by **basketcase0302** » Sun Sep 02, 2012 5:23 am

from choo-choo town. Do you have a voltage meter? What is on the truck for ignition, (the original points)? Have you tried pulling, (and grounding) a spark plug to see if you have spark? Have you verified if there is gas flowing from the carb? And what engine is in your truck?

grabbitwilson · Post by **grabbitwilson** » Sun Sep 02, 2012 8:42 am

The motor is a 302 and it has electronic ignition from the 79 truck I also changed both boxes to the 72 truck and checked the wiring harness three times to make sure it was right

grabbitwilson · Post by **grabbitwilson** » Sun Sep 02, 2012 8:46 am

I haven't checked the sparkplug but it is pumping fuel I have bought a voltage meter but nor sure what to check

basketcase0302 · Post by **basketcase0302** » Sun Sep 02, 2012 2:20 pm

Here's a good wiring diagram for the Duraspark ignition the 79' would've had:
http://www.fordification.com/forum/view ... =8&t=48178
I'd start by checking to see if you're getting power, (8-12 DC volts) to the + side of the coil when the ignition is switched on. And pull a spark plug and ground it against the block to see if it's firing. You should have a nice bluish/reddish spark when turning the engine over-and grounding the plug against the engine block. Duraspark is also very easy to short out, (box wise). But the beauty of it is that it is also fairly cheap to replace:
http://www.ebay.com/itm/Motorcraft-Dura ... 21&vxp=mtr
And you might want to start another thread on your engine issue over here, (rather than in the "Welcome" board:
http://www.fordification.com/forum/viewforum.php?f=3

Diamond N · Post by **Diamond N** » Sun Sep 02, 2012 4:53 pm

Welcome from Indiana...

grabbitwilson · Post by **grabbitwilson** » Sun Sep 02, 2012 5:07 pm

I did all that and I don't have any fire at the number one plug does that mean the coil is bad how do u check that

grabbitwilson · Post by **grabbitwilson** » Sun Sep 09, 2012 8:43 pm

Rechecked all the wiring and put new coil on today still no fire to the plugs what to do next anyone with an idea please help

basketcase0302 · Post by **basketcase0302** » Mon Sep 10, 2012 4:22 am

grabbitwilson on Sun Sep 09, 2012 8:43 pm
Rechecked all the wiring and put new coil on today still no fire to the plugs what to do next anyone with an idea please help

Back to my question above...do you have a voltage meter? If so, what are you reading on the 12V "+" side of the coil with the ignition switch turned on?

grabbitwilson · Post by **grabbitwilson** » Mon Sep 10, 2012 8:10 pm

Even with the new coil I'm. Still no getting a reading on the coil with the switch turn on what does that mean

sargentrs · Post by **sargentrs** » Tue Sep 11, 2012 3:19 pm

Personally, i'd start backtracking the circuit from the coil backwards. Do you have power at the other end of the connection, etc.

grabbitwilson · Post by **grabbitwilson** » Wed Sep 12, 2012 8:26 pm

No wire to the switch everythings ok now thanks

sargentrs · Post by **sargentrs** » Thu Sep 13, 2012 4:22 am

Congrats!

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engine turns over but won't crank

engine turns over but won't crank

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