Notices
1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
Sponsored by:
Sponsored by: Moser

78 Ignition timing

Thread Tools
 
Search this Thread
 
Old Aug 4, 2013 | 08:36 PM
  #1  
1979 300i6's Avatar
1979 300i6
Thread Starter
|
Senior User
Joined: Jan 2013
Posts: 303
Likes: 0
78 Ignition timing

I recently purchased a 1978 Ford F150 351 modified that was rebuilt but sit 2 years withought ever being started or with any oil, the Distributor was just put in and Since it never ran it Was never put into time, I got the Engine cranking over good, But it will only hit a little bit and backfire so i figured its way out of time, the Disturber is as far right as it will go (when sitting in truck) any one have an idea where I should have the Distributor sit at starting out?
 
Reply
Old Aug 4, 2013 | 09:03 PM
  #2  
march's Avatar
march
Laughing Gas
15 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: May 2006
Posts: 1,140
Likes: 13
From: Port Orchard Wa
Ok, I'll give this a shot, but there is lots of info on the web to help.

Do you know what the initial timing should be? Pick the one that fits from this list.
<table width="580" bgcolor="#cccccc" cols="3" border="1" cellspacing="2" cellpadding="7"><tbody><tr><td width="25%" align="left" valign="top">F150/250/350
</td><td width="50%" align="left" valign="top"> 351M, auto trans
</td><td width="25%" align="left" valign="top"> 14° BTDC
</td></tr><tr><td width="25%" align="left" valign="top"> F150/250/350
</td><td width="50%" align="left" valign="top"> 351M, auto trans, CA emissions
</td><td width="25%" align="left" valign="top"> 8° BTDC
</td></tr><tr><td width="25%" align="left" valign="top"> F150/250/350
</td><td width="50%" align="left" valign="top"> 351M, manual trans, CA and 49-state
</td><td width="25%" align="left" valign="top"> 6° BTDC
</td></tr></tbody></table>
Rotate the engine by hand until the timing indicator is on the correct initial timing. Then make sure the rotor is pointing at the number 1 cylinder (if it's 180 out that's ok). Then rotate the distributor until a prong on the reluctor lines up with the magnet in the pickup coil. This should get you close enough to get it started.
 
Reply
Old Aug 4, 2013 | 09:16 PM
  #3  
1979 300i6's Avatar
1979 300i6
Thread Starter
|
Senior User
Joined: Jan 2013
Posts: 303
Likes: 0
Thanks a lot I'll give it a shoot
 
Reply
Old Aug 5, 2013 | 03:10 PM
  #4  
1979 300i6's Avatar
1979 300i6
Thread Starter
|
Senior User
Joined: Jan 2013
Posts: 303
Likes: 0
I can't seem to find the timing pointer anyone one have a picture of where it should be?
 
Reply
Old Aug 5, 2013 | 06:16 PM
  #5  
MeanGreen460's Avatar
MeanGreen460
Elder User
Joined: Mar 2013
Posts: 559
Likes: 0
From: In Hastings Delton area
How is the compression ?If its been sitting 2 yrs the cylinders may be dry not making much compression .I;d pull the plugs out and shoot some Wd 40 or a little oil in the cylinders crank her over with plugs out then reinstall plugs. Make sure your distributor is wired right .You may want to turn distributor advance or retard while trying to start it .
 
Reply
Old Aug 5, 2013 | 08:15 PM
  #6  
march's Avatar
march
Laughing Gas
15 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: May 2006
Posts: 1,140
Likes: 13
From: Port Orchard Wa
 
Reply
Old Aug 5, 2013 | 09:08 PM
  #7  
J ballan's Avatar
J ballan
Fleet Mechanic
Joined: Jan 2012
Posts: 1,668
Likes: 13
From: Saskatchewan
March
Rotate the engine by hand until the timing indicator is on the correct initial timing. Then make sure the rotor is pointing at the number 1 cylinder (if it's 180 out that's ok). Then rotate the distributor until a prong on the reluctor lines up with the magnet in the pickup coil. This should get you close enough to get it started.


Me
I will disagree with this ^.Trying to set your ingnition timing with the engine 180 out is a bad idea. You need to rotate your engine until it is on top dead center on the compression stroke, then drop the distributor in with the rotor pointing to #1cylnder on the cap. This should be close enough to start it. Then using a timing light and the timing marks on the balancer set it to whatever is recommended for your engine (assuming its stock) with the vacume advance unhooked. Good luck.
 
Reply
Old Aug 5, 2013 | 10:36 PM
  #8  
march's Avatar
march
Laughing Gas
15 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: May 2006
Posts: 1,140
Likes: 13
From: Port Orchard Wa
J is correct. I was assuming that the distributor was installed "close". If my process doesn't work, you'll need to do as J suggests. Let us know if your unsure of how to find TDC of the compression stroke.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

 Verdad Gallardo
story-1

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-2

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-3

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-4

Every 2026 Ford Engine Explained

 Brett Foote
story-5

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-6

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-7

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-8

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-9

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
Old Aug 5, 2013 | 10:42 PM
  #9  
1979 300i6's Avatar
1979 300i6
Thread Starter
|
Senior User
Joined: Jan 2013
Posts: 303
Likes: 0
Thanks for all the replys, march, yes I am pretty new to this and help on how to find the tdc would be greatly Appreciated
 
Reply
Old Aug 5, 2013 | 11:04 PM
  #10  
march's Avatar
march
Laughing Gas
15 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: May 2006
Posts: 1,140
Likes: 13
From: Port Orchard Wa
Assuming you balancer was installed correctly TDC is marked on it. To make sure your on the compression stroke, remove the #1 spark plug and rotate the engine until you feel pressure on your thumb. That's the compression stroke. TDC is at the top of this stroke.
 
Reply
Old Aug 6, 2013 | 11:36 AM
  #11  
1979 300i6's Avatar
1979 300i6
Thread Starter
|
Senior User
Joined: Jan 2013
Posts: 303
Likes: 0
Ok, I have Follow the above about TDC and have found it, but I am now having trouble getting the dizzy to drop in with rotter facing Cylinder number 1, any suggestions
 
Reply
Old Aug 6, 2013 | 11:45 AM
  #12  
J ballan's Avatar
J ballan
Fleet Mechanic
Joined: Jan 2012
Posts: 1,668
Likes: 13
From: Saskatchewan
Sometimes they hang up on the oil pump driveshaft. Take a 3/8 socket and tape it to a long extension. Should be able to turn it a little and try again.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
wcjones
1973 - 1979 F-100 & Larger F-Series Trucks
1
Sep 4, 2015 06:57 AM
earthquake68
1973 - 1979 F-100 & Larger F-Series Trucks
28
Mar 19, 2015 11:27 PM
cysneed
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
2
Dec 17, 2014 07:42 AM
blkempinc
1973 - 1979 F-100 & Larger F-Series Trucks
2
Feb 14, 2010 08:30 AM
buzzer12
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
6
Oct 12, 2003 06:11 PM




All times are GMT -5. The time now is 10:01 AM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE