No spark
Thread Starter
|
Senior User
Joined: Jan 2005
Posts: 130
Likes: 0
No spark
Can a neutral safety switch prevent spark, but allow cranking of the engine?
I swapped a 1970 f-100 body to a 76 f-250 frame. Now i have a 360/4speed instead of a 240/auto. anyway, the 360 ran great before the swap, but now cranks with no spark. I'm using the 76 wiring harness, but just have it slaved in(all the engine stuff is hooked up, but not the lights, interior stuff, etc.)
I got a diagram and checked my wiring between the ignition module, dizzy, coil, and relay. Any suggestions? yes, i've searched too :-)
thanks a ton
I swapped a 1970 f-100 body to a 76 f-250 frame. Now i have a 360/4speed instead of a 240/auto. anyway, the 360 ran great before the swap, but now cranks with no spark. I'm using the 76 wiring harness, but just have it slaved in(all the engine stuff is hooked up, but not the lights, interior stuff, etc.)
I got a diagram and checked my wiring between the ignition module, dizzy, coil, and relay. Any suggestions? yes, i've searched too :-)
thanks a ton
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Originally Posted by afbrian13
Can a neutral safety switch prevent spark, but allow cranking of the engine?
I do not know if I follow you here or not.
Where did you get the Distributor?
I take it you have the Duraspark II system. Was it working on the donor before you took it off?
Do you have 12 VDC on the BATT wire of the coil in the run and start modes with the BATT wire off the coil.
How about the Red (RUN) and White (START) wires on the Ignition Module.
Moderator
Joined: Jan 2001
Posts: 56,997
Likes: 2,746
From: Virginia
Do you have 12 VDC on the BATT wire of the coil in the run and start modes with the BATT wire off the coil.
How about the Red (RUN) and White (START) wires on the Ignition Module.
How about the Red (RUN) and White (START) wires on the Ignition Module.
Here's a diagram of a duraspark II system.
Last edited by Franklin2; Sep 10, 2005 at 10:20 PM.
Thread Starter
|
Senior User
Joined: Jan 2005
Posts: 130
Likes: 0
to clarify, the entire duraspark II system is the stock 76 for the 360 ci motor.
i do have correct voltages on the red and white wires.
a guy here at work said he had a problem with not getting power to the distributor, so i'll chefck that out tomarrow.
Thanks for the help
Brian
i do have correct voltages on the red and white wires.
a guy here at work said he had a problem with not getting power to the distributor, so i'll chefck that out tomarrow.
Thanks for the help
Brian
Thread Starter
|
Senior User
Joined: Jan 2005
Posts: 130
Likes: 0
Thanks everyone again. I ended up getting odd ohm readings, so i shook the harness. Bad, Bad, Bad. 30 years is hard on wiring. I ended up using that diagram above and re-wiring the engine with a new pickup in the dist and new ignition module. Runs like a champ.
Thanks for the info.
Brian
BTW-Whats the best places you've found for wiring diagrams. I'm used to aircraft tech data(active duty Air Force), so the chilton diagrams leave a little to be desired to say the least. Haynes is good on my 76 280z, but not so good on these trucks.
Thanks for the info.
Brian
BTW-Whats the best places you've found for wiring diagrams. I'm used to aircraft tech data(active duty Air Force), so the chilton diagrams leave a little to be desired to say the least. Haynes is good on my 76 280z, but not so good on these trucks.
Moderator
Joined: Jan 2001
Posts: 56,997
Likes: 2,746
From: Virginia
I have never bought one of these, but it says it has the factory wiring diagrams in it, so I don't think you are going to get better than that.
http://www.motorhaven.com/catalog/ca...OM_page_1.html
http://www.motorhaven.com/catalog/ca...OM_page_1.html
Thread
Thread Starter
Forum
Replies
Last Post
bob arrington
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
3
Feb 6, 2004 12:24 AM
