Timing a freshly rebuilt 1993 F-150 5.0 EFI
#1
Timing a freshly rebuilt 1993 F-150 5.0 EFI
So I'm just at the stage where I need to time my '93 5.0 that I just got put back in the truck.
The farthest point on the right of the pointer should point at "0" for TDC, correct?
So, I need to pull the #1 spark plug, hold my finger in it while turning the motor over until the pressure builds enough to push my finger a little bit.
Then the timing indicator point should be nearing "0", correct?
So should it be nearing "0" or ten degrees before? I've read that 5.0 EFI's should be times 10 before.
So, if it's sitting on either 0, or 10 before 0.
I then point the rotor on the distributor towards the #1 cylinder and insert it into the block, eh?
Thanks to anyone who can help me be more clear on this.
Hopefully I'll have it running tomorrow!
The farthest point on the right of the pointer should point at "0" for TDC, correct?
So, I need to pull the #1 spark plug, hold my finger in it while turning the motor over until the pressure builds enough to push my finger a little bit.
Then the timing indicator point should be nearing "0", correct?
So should it be nearing "0" or ten degrees before? I've read that 5.0 EFI's should be times 10 before.
So, if it's sitting on either 0, or 10 before 0.
I then point the rotor on the distributor towards the #1 cylinder and insert it into the block, eh?
Thanks to anyone who can help me be more clear on this.
Hopefully I'll have it running tomorrow!
#2
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When you have the plug out of cyl #1 stick a piece of coat hanger wire or similar in the hole to feel for the piston as it approaches TDC, when it is there the crank timing mark should line up on 0. Now insert the distributor so the rotor points to post #1 on the distributor cap when the dizzy is fully inserted, do not clamp down the distributor, leave it loose enough to turn. Start the motor and remove the spout plug(to disable ignition advance), and using a timing light set base timing at 10deg advanced or so, these motors respond to some additional advance too but that's something you can tune in later once the motor is broken in. You may have to rotate the whole distributor to get the motor to fire the first time because even following this procedure it's easy to put it in 1 tooth off. If you have to really crank the distributor far to one side or the other to get it to fire it's off a tooth.
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