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  #1  
Old 05-07-2002, 06:30 PM
Ringwood1 Ringwood1 is offline
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4.9l firing order

Help
I have just changed the spark plug wiring on my 1993 F150 4.9l.
The manual I have shows the firing order as 1-5-3-6-2-4 Distributor rotation clockwise.
This Did not work and I understand there are 2 different firing orders for this inline 6. Does any one know the other?
Thanks
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  #2  
Old 05-07-2002, 06:46 PM
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4.9l firing order

All 4.9 engines have a 153624 firing order. The only difference is the wire location on the caps when they changed to EFI. The 5.0 and the 5.0 H.O. have different firing orders.
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  #3  
Old 05-07-2002, 07:20 PM
Ringwood1 Ringwood1 is offline
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4.9l firing order

Thanks
Now if I can just figure out which is # 1 on the distributor of the EFI !


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  #4  
Old 05-07-2002, 07:28 PM
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4.9l firing order

I have that information right in front of me. Ok, you have a hold down screw at the 10 o'clock and the 4 o'clock position. Your rotor turns clockwise. Number one cylinder is at 3 o'clock, just before the hold down screw at 4 o'clock. Then continue clockwise with 5, 3, 6, 2 & 4. You should be in business!
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Old 05-07-2002, 08:03 PM
Ringwood1 Ringwood1 is offline
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4.9l firing order

Well I don't know what I did but it won't fire up.
It was running ok before I started other than a lot of miles on the wires, cap, rotor, and plugs. I tried the old cap and rotor again, but no luck either. It just cranks over like crazy.
Well tomorrow's another day. Its getting dark in the East!
Could I have done any damage trying to start it with the wiring wrong?
Thanks again
Ring
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  #6  
Old 05-07-2002, 08:43 PM
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4.9l firing order

I doubt that you damaged anything.
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Old 05-07-2002, 10:33 PM
Wilber15 Wilber15 is offline
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4.9l firing order

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  #8  
Old 05-09-2002, 06:14 AM
jarrod316 jarrod316 is offline
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4.9l firing order

number 1 should be marked on the cap, it has been on everyone of them that i've replaced. if its not on the new cap. it should be on the old one if its the original cap. even the new cap should be marked with a 1 were number 1 spark plug wire should go. have you moved the distributor? or unpluged the tfi, maybe bumped the wires enough to unplug them?
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Old 05-09-2002, 03:26 PM
doxslayer doxslayer is offline
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4.9l firing order

there is only one firing order yhat will work on any inline 6cyl.that is 15(too young),36(too old),24(just right)-153624- if you are trying to find the number one cyl on the dist pull the number 1 plug and bring it to tdc and look at your distributor where it points should be close to number 1cyl.close enough for you to get it running and adjust the timing to correct specs.good luck
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Old 07-28-2007, 12:58 AM
rerunruss rerunruss is offline
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Senior chief I just did my truck tonight and the no1 is actualy at six mabie the diff. is in the year AMS1 smith
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  #11  
Old 03-18-2009, 07:59 PM
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Smile Correct info for 1992 4.9 L EFI

Quote:
Originally Posted by mantta View Post
I have that information right in front of me. Ok, you have a hold down screw at the 10 o'clock and the 4 o'clock position. Your rotor turns clockwise. Number one cylinder is at 3 o'clock, just before the hold down screw at 4 o'clock. Then continue clockwise with 5, 3, 6, 2 & 4. You should be in business!
The #1 is two past the hold down at the 4 o'clock position. See this page.1992 Ford Firing Orders
I set mine up like this and it runs like new. Please note mine is fuel injected and has a 'Y' in the vin.
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Old 04-02-2011, 04:28 PM
emkay4597 emkay4597 is offline
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From what I understand (I could be wrong) #1 can be anywhere if you had replaced the distributor. Like someone previous said check the #1 for TDC. Even then you can be 180 degrees off.
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  #13  
Old 04-03-2011, 05:31 AM
drjoe171 drjoe171 is offline
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Quote:
Originally Posted by emkay4597 View Post
From what I understand (I could be wrong) #1 can be anywhere if you had replaced the distributor. Like someone previous said check the #1 for TDC. Even then you can be 180 degrees off.
X2 on THAT concept.

If that distributor was ever out, it could be in many different wrong positions relative to the number of gear teeth on the dist drive gear.

I always replace plug wires ONE at a time because I've screwed myself in the dark trying to get stuff done in a hurry.

Next trick is to pull #1 plug, put in a plastic drinking straw and try to get the piston to TDC and then guess from there. Easiest is to turn the engine with a big wrench on the crank pulley and have a helper watch the straw come up and stop before it goes back down.

At least that will give you a 50% chance at the tdc fire position.
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Old 01-03-2012, 12:42 AM
WideLoadTimmy WideLoadTimmy is offline
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Quote:
Originally Posted by jarrod316 View Post
number 1 should be marked on the cap, it has been on everyone of them that i've replaced. if its not on the new cap. it should be on the old one if its the original cap. even the new cap should be marked with a 1 were number 1 spark plug wire should go. have you moved the distributor? or unpluged the tfi, maybe bumped the wires enough to unplug them?
Out of curiosity, what happens when you unplug the tfi? I haven't ye but I have had some wiring issues. How would it act if the tfi lost power or ground?
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Old 01-03-2012, 12:49 AM
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dr.sacman
Quote:
Originally Posted by WideLoadTimmy View Post
Out of curiosity, what happens when you unplug the tfi? I haven't ye but I have had some wiring issues. How would it act if the tfi lost power or ground?
It wouldn't run. If you have a bad ground, it won't run very well if at all. If you have a bad wire, it won't run very well either, if at all.
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Old 01-03-2012, 12:49 AM
 
 
 
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