Hello new to the forum, I reciently was given a 1974 150 pu with a 392,it sat since 2001 and was started 3or4 times, towed home to pueblo colo put a battery in it primed it and it fired up,did a tune up on it new plugs wires and cap now no start never touched the timing,it has a gold box with a prestolite dizzy and a holly 4 bbl truck is in fantastic shape and its all original is there somthing I missed? I know it fires off of 8 and it needs to b at tdc, pulled #8 and did the compression test and so on but all the diagrams show #8 as the closest plug post to the radiator but the rotor is almost facing #4 post on dist housing. Got fire and it catches on a few holes any help would b appreciated, I can post a few pics of the truck and engine as soon as it warms a little it that would help.
1974 camperspecial W/ 392 wont fire
- Thread starter outlaw69
- Start date
Scoutboy74
Moderator
Yeah I'm with Robert, especially if you replaced the cap and all wires at once rather than transferring/replacing one wire/plug at a time. It is very easy to mess up the order with the shotgun method.
Manual --
72'-75' pick-up and Travelall service manual set - International Scout parts
"technically", at this point you probably need to determine "tdc" of #8 -- top of the compression stroke on #8 and see where the rotor is pointing and put the # 8 wire in that post of the distributor cap. Then, put the other wires in their "firing order" = 1-8-4-3-6-5-7-2.
72'-75' pick-up and Travelall service manual set - International Scout parts
"technically", at this point you probably need to determine "tdc" of #8 -- top of the compression stroke on #8 and see where the rotor is pointing and put the # 8 wire in that post of the distributor cap. Then, put the other wires in their "firing order" = 1-8-4-3-6-5-7-2.
Thanks Robert, I did set the #8 at tdc and on the compression stroke and did as u said with the remainder of the plug wires,acts like it wants to fire but not all are firing, put new champion plugs in at the time of tune up,pulled three from various holes and they r wet, not firing, so im thinking this is mostly electrical and poor choice of plugs and wires, I still am having a little trouble figuring out why #8 is at the 7 or 8 oclock position on the dizzy,seems kinda strange as most other threads say #8 faces the radiator,hopefully I get this sorted out before the snow flies!
I am not familiar with IH goldbox / prestolite systems.
No real idea / knowledge on position of #8, but I checked my Holley points distributor and #8 does "face" ("closest to") the radiator.
If you have a person to help, you can take one of the wires you think is not firing and hold it (with insulated pliers) 1/4" away from metal and see if a spark "jumps the gap" when someone cranks the engine.
I do not know the rotation of the distributor, but I checked the wires in my cap: standing in front of the engine, #4 is to the left (pass side) of #8. Not sure where that puts #4 from "your perspective".
I am not a good electrical person, so someone else will have to chime in with better ideas.
There are posts on the goldbox on this site.
Good luck
No real idea / knowledge on position of #8, but I checked my Holley points distributor and #8 does "face" ("closest to") the radiator.
If you have a person to help, you can take one of the wires you think is not firing and hold it (with insulated pliers) 1/4" away from metal and see if a spark "jumps the gap" when someone cranks the engine.
I do not know the rotation of the distributor, but I checked the wires in my cap: standing in front of the engine, #4 is to the left (pass side) of #8. Not sure where that puts #4 from "your perspective".
I am not a good electrical person, so someone else will have to chime in with better ideas.
There are posts on the goldbox on this site.
Good luck
Thanks I just checked the plugs and all have fire using the old autolite plugs,so we put them back in and still same results! I think a restab is in order, never done it on an IH,but willing to try here are a couple of pics of dizzy #8 is the grey plug wire for reference to how the rotor is for #8
Attachments
Robert Kenney
Super Moderator
It makes absolutly no difference where the dizzy is stabbed or clocked ....
Only that you install the #8 plug wire on the cap tower that the rotor is lined up with when the engine is at tdc (compression stroke) of #8.. The rotor turns cw so place the wired according ly using the firing order 1-8-4-3-6-5-7-2. Use the timing marks on the front cover and crank hub to exact the tdc alignment... I would bet a dollar the wire order is wrong.
Cmiiar but the gold box was a Holley ignition system only accessory... Are you sure you have the correct cap?
Only that you install the #8 plug wire on the cap tower that the rotor is lined up with when the engine is at tdc (compression stroke) of #8.. The rotor turns cw so place the wired according ly using the firing order 1-8-4-3-6-5-7-2. Use the timing marks on the front cover and crank hub to exact the tdc alignment... I would bet a dollar the wire order is wrong.
Cmiiar but the gold box was a Holley ignition system only accessory... Are you sure you have the correct cap?