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  #1  
Old 04-04-2007, 06:11 PM
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Join Date: Jul 2006
Location: south Baja Mexico
Vehicle: 1995 ford F150
Posts: 259
setting timing on a 4.9 300 cid 6 cyl.

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IMPORTANT....... which timing marks did you use to set the timing?

this is one place where the Haynes manual is wrong. it tells you to use the marks on the timing gear cover. and on a lot of 4.9s that is wrong.

Ford in there infant wisdom saw fit to put 2 different sets on many of the 4.9s. on mine there is one set on the timing gear cover. dont use this one if you have the other one it is located on the other side or passenger side. it is a metal strip that has notches in it. one big notch which is TDC and smaller notches going both ways out from TDC . there are also 2 different marks on the crank pulley. one square notch that is easy to see. dont use this one. the other correct one is a very small line scribed in the pulley and very hard to see if the pulley is dirty. this is the one to use.

let me know if this pertains to your truck as well. mine is a 95. and most of the ones I have worked on are this way.
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  #2  
Old 04-04-2007, 06:37 PM
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Join Date: May 1999
Location: Copley, Ohio
Vehicle: 1996 Ford F150
Posts: 2,477
On the 96 there are 2 faint lines on the pulley, one at TDC and one at 10° BTDC. That allows you to use a regular or a dial back light to set the timing. The pointer is a single post at about 9:00 next to the pulley. Because of the addition of the misfire sendor on the 96, there apparently wasn't room for the notched timing sector.
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  #3  
Old 04-04-2007, 10:41 PM
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Join Date: Jul 2006
Location: south Baja Mexico
Vehicle: 1995 ford F150
Posts: 259
it is a shame that they need to change it so much and the Haynes and other manuals just use the one on the timing gear cover. ford should have removed that one. I know of quit a few peple that have tried to use the wrong one and never could figure out why it would not run. I even know one man that gave up and pulled the engine. I can only imagine how many thousands of houris have been wasted on this. I also dont understand why the publishers of the manuals cant update this kind of thing. but the good thing is we have forums such as this one that are better than any manule



Bruce
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  #4  
Old 04-30-2007, 09:40 PM
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Join Date: Apr 2005
Vehicle: 1994 Ford F150
Posts: 4
Where should the timing be set?

I have a 1994 F150 XL 4x4 4.9L and the manuals refer me to a emission control label under the hood. Mine of coarse is gone. Should one use TDC? Since there are no numbers on the scale, I am making an assumption.

Last edited by jlawlor; 04-30-2007 at 09:45 PM.
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  #5  
Old 05-04-2007, 06:10 PM
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Join Date: Jul 2006
Location: south Baja Mexico
Vehicle: 1995 ford F150
Posts: 259
it seems that most are 10 degrees BTC with the sprig disconnected. I would start there. on my 95 4.9 I cant go any over 10 and burn reguler gas.


Bruce
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  #6  
Old 05-04-2007, 06:44 PM
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Join Date: May 1999
Location: Copley, Ohio
Vehicle: 1996 Ford F150
Posts: 2,477
If you have a conventional timing light use the 10° BTDC line and be done with it. If you have a dial-back light, use the 0° line and dial in the number of your choice. You'll probably end up at 10°
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Old 05-04-2007, 06:44 PM


 
 
 
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