300 six points conversion
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From: tampa fla
300 six points conversion
i have a 86 f-150 4x4 3oo six,primarily a woods truck,i put a non electronic carb and a points type distributor.set points to .027,plugs(autolite 45)to .034,verified like twenty times #1 TDC,compression 160 across the board,tries to start then acts like it floods and popback thru the carb. #1,2,5,dry#3,4,6 WET tried switching wires 180 just for sh-ts and grinns to no avail. any ideas ? HUNTING SEASON WILL BE HERE SOON,
Last edited by upinsmoke46; Sep 9, 2011 at 11:42 AM. Reason: MISS WROTE DRY WHEN SHOULD HAVE WROTE WET
Lead Driver
Joined: Jul 2009
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From: Sheffield, AL
Welcome to the forum!
It has been a very long time since I fooled with points, but I thought the gap was more like .016"? Is the condensor good? Is the voltage to the coil correct? The 1986 truck had a resistor wire supplying voltage to the coil and I don't remember if the pre-electronic systems did.
It has been a very long time since I fooled with points, but I thought the gap was more like .016"? Is the condensor good? Is the voltage to the coil correct? The 1986 truck had a resistor wire supplying voltage to the coil and I don't remember if the pre-electronic systems did.
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Joined: Jul 2004
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From: Northern California
Plugs should be gapped at .035, but .034 is close enough.
.027 on the points is also correct for the 300-6.
What type coil are you running? Not the coil that came with the Duraspark ignition right?
Have you double checked your timing? Your firing order?
1-5-3-6-2-4
The pre-duraspark coils did have a resistance wire, however it's of a different value.
For Points the resistor is: 1.30 to 1.40 ohms
For Duraspark: 1.05 to 1.15 ohms
.027 on the points is also correct for the 300-6.
What type coil are you running? Not the coil that came with the Duraspark ignition right?
Have you double checked your timing? Your firing order?
1-5-3-6-2-4
The pre-duraspark coils did have a resistance wire, however it's of a different value.
For Points the resistor is: 1.30 to 1.40 ohms
For Duraspark: 1.05 to 1.15 ohms
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From: tampa fla
300 six points conversion
i bought the oem replacement coil i noticed it said for external resistor,but i got 4 ohms instead of the lower 1.0 to 1.6 so i hooked the coil to direct battery while cranking with the same result,a friend suggested possable collapsed lifters,but that seems odd since the truck ran before i did this,and the reason i changed it was because the electrical parts of the old carb were bad and this seemed more cost effective at the time
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From: Virginia
Turn the dist a little bit and try it again. If it gets worse, try turning it a little bit the other way. If it gets better keep turning it in the good direction till it half runs and you can get a timing light on it.
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From: Northern California
It seems like it should run.
Have you confirmed spark? If not then something isn't right. You did replace the condenser?
If you got good clean spark, double check the timing, firing order, etc...
Remember the 300-6 distributor turns in a clockwise rotation, which is backwards from a V8.
EDIT: Franklin has a good suggestion as well.
Have you confirmed spark? If not then something isn't right. You did replace the condenser?
If you got good clean spark, double check the timing, firing order, etc...
Remember the 300-6 distributor turns in a clockwise rotation, which is backwards from a V8.
EDIT: Franklin has a good suggestion as well.
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New User
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From: tampa fla
yea got a reman distributor,reman carb and new coil,pretty basic swap i thought,well i appreciate the suggestions i am waiting for it to quit raining and i will go over everything one more time,i am gonna pull all 6 plugs and crank it with them connected and watch the spark ,and i will check the condensordoes anyone know how to checkit or what readings i should have?
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From: Casper, Wyoming
These engines have two timing marks, one on the front of the timing cover, and one on the right side of the engine. Use the mark on the right side of the engine.
I've made the mistake of using the wrong mark before, and it just won't work.
BTW, right side of the engine means right while sitting in the truck.
Good luck.
I've made the mistake of using the wrong mark before, and it just won't work.
BTW, right side of the engine means right while sitting in the truck.
Good luck.
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Post Fiend
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From: Northern California
These engines have two timing marks, one on the front of the timing cover, and one on the right side of the engine. Use the mark on the right side of the engine.
I've made the mistake of using the wrong mark before, and it just won't work.
BTW, right side of the engine means right while sitting in the truck.
Good luck.
I've made the mistake of using the wrong mark before, and it just won't work.
BTW, right side of the engine means right while sitting in the truck.
Good luck.
Some trucks from the factory had "TWO" timing marks on the damper, so it will not matter which timing mark you use. Some dampers (especially aftermarket replacements) only have "ONE".
The timing marks on the right are the most universally accepted.
If your damper pully only has one mark, and you set it to the timing marks on the timing gear cover, (Ironically the easier ones to see) you can be severly out of time.
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