Zach_Bailey

I have a 96 f150 with a 5.0 and I tryed to advance my timing a couple degrees but it seems like it had no effect .. does anybody know why... I could realy use any advice u could give me at this point

jrh5610

Did you the spout plug out. The timing wont advance with it in. It will eithet be on the driver's side on the fenderwell close to the firewall or down by the distributor.

Zach_Bailey

Wat does the spout plug do nd Wat does it look like

jrh5610

Its basically a jumper. It allows the computer to controll the timing with it unplugged it will go back to its base timing which is 10° i think. Before you try again read this. http://fullsizebronco.com/forum/show...ht=timing+bump

Zach_Bailey

That helped a lot ... thanks ... my truck is running better than it ever has

Andrew95

Could someone explain to me more in depth how the spout connector works? The idea of this overriding the timing as set at the dist doesnt make any sense to me.

Zach_Bailey

Also just to make sure since my timing light is broke I havta turn it counter clockwise to advance it right

jrh5610

If it starts to idle faster you're going the right way. I believe you have to go clockwise. I wouldn't recommend doing the timing bump without a working timing light. It dont take much of a turn to get several degrees. If you go to far it will start pinging and thats not good. Everyone that ive read about on here doing the bump gets between 14°&16° before it begins to ping. A few have gotten to 18° but not many.

Warlockk

Your base timing is what you set with your timing light. It's determined mechanically by the placement of the distributor. The computer then adjusts to the ideal timing for the situation based on inputs from your tps, map sensor or MAF sensor etc. It retards at idle and advances on acceleration. Old ( non computer controlled ) ignition systems achieved this by springs and weights or on most Fords intake vacuum. The computer is obviously more accurate. If you don't disconnect the spout ( spark output ) jumper , the ecu tries to correct the timing to base timing no matter what you do. If you get too far out of adjustment it can't reach the advance needed ( around 20* @ 2000 rpm). On newer engines without distributors there is no way to adjust base timing without an aftermarket programmer. There's a little more to it but that's the basics.