Gary Lewis Posted June 19, 2022 Share Posted June 19, 2022 And the GGM brain trust comes through again! Shaun, you were spot on. After you posted your first photo I went out there and sure enough, I had that exact valve. It had disconnected from the PCV valve and fallen down behind the carburetor onto the exhaust manifold, which is why I didn't see it. It was easy enough to see why it happened...the little bit of tubing connecting the valves was slightly too large, and the bit of oil coming out of the PCV valve had lubricated it enough that it slipped right off. I don't recall having put that tube on there, but shame on me if I did. I found some fuel-resistant tubing of a slightly smaller diameter and put that on, now it's nice and secure. For good measure I zip tied it to the other line coming out of the PCV valve, just to provide a little additional support. A quick test drive showed that everything is still good. With that, the to-do list now looks like this:Air and fuel filter replacementOil changeWindshield wiper replacementBrake fluid check/possible replacementEngine coolant replacementHood realignmentRadio antenna repairIgnition switch replacementDuraspark module cleanupFix loose manifold boltFix gear selector roll pinCarb adjustment/tuneup (no longer necessary)Tire check & rotationPCV valve/vacuum leakNext up is probably the coolant replacement.Excellent! :nabble_anim_claps:On the brake fluid, I encourage you to do a complete replacement. I believe that doing so every few years would make our brake systems last far longer than they do. Link to comment Share on other sites More sharing options...
salans7 Posted June 19, 2022 Share Posted June 19, 2022 And the GGM brain trust comes through again! Shaun, you were spot on. After you posted your first photo I went out there and sure enough, I had that exact valve. It had disconnected from the PCV valve and fallen down behind the carburetor onto the exhaust manifold, which is why I didn't see it. It was easy enough to see why it happened...the little bit of tubing connecting the valves was slightly too large, and the bit of oil coming out of the PCV valve had lubricated it enough that it slipped right off. I don't recall having put that tube on there, but shame on me if I did. I found some fuel-resistant tubing of a slightly smaller diameter and put that on, now it's nice and secure. For good measure I zip tied it to the other line coming out of the PCV valve, just to provide a little additional support. A quick test drive showed that everything is still good. With that, the to-do list now looks like this:Air and fuel filter replacementOil changeWindshield wiper replacementBrake fluid check/possible replacementEngine coolant replacementHood realignmentRadio antenna repairIgnition switch replacementDuraspark module cleanupFix loose manifold boltFix gear selector roll pinCarb adjustment/tuneup (no longer necessary)Tire check & rotationPCV valve/vacuum leakNext up is probably the coolant replacement.Awesome! Glad to see you found it! Link to comment Share on other sites More sharing options...
Dorsai Posted June 19, 2022 Author Share Posted June 19, 2022 On the brake fluid, I encourage you to do a complete replacement. I believe that doing so every few years would make our brake systems last far longer than they do. I am probably going to do just this. I was reading a thread here the other day where someone (likely you) made that argument, and it was persuasive. The fluid in there now has been there since the original brake rebuild in 2010 and hasn't been touched since. Link to comment Share on other sites More sharing options...
1986F150Six Posted June 21, 2022 Share Posted June 21, 2022 I found it in the Illustration section of the MPC, as shown below. The only problem is that when I looked 14A163 up in the Text section of the MPC to get a part number I realized that generic part number is a RETAINER (WIRE HARNESS), and there are dozens of wire harness retainers all over these trucks. And here's the only one that appears to be the right one. Note that the same part is used in two other applications on our trucks - as indicated by the "1" in the right column, which is titled "QTY" and shows how many are needed for each usage. And again, I've never seen one of those despite having worked on many of these trucks. So while the MPC says they where used from 1980 through the end of the catalog in '89, I doubt that or surely I'd have seen one, somewhere. I can see that mechanics may well have left them off when replacing an ignition switch, but I doubt all the trucks I've worked on had all their ignition switches replaced. https://forum.garysgaragemahal.com/file/n120205/14A163_Part_Number.png https://forum.garysgaragemahal.com/file/n120205/Screenshot_of_14A163_At_Ignition_Switch.png It has been determined that this part is not necessary, but just in case someone just had to have it... https://www.rearcounter.com/C3SZ-14A163-B-parts438244.html Link to comment Share on other sites More sharing options...
Dorsai Posted June 28, 2022 Author Share Posted June 28, 2022 I found it in the Illustration section of the MPC, as shown below. The only problem is that when I looked 14A163 up in the Text section of the MPC to get a part number I realized that generic part number is a RETAINER (WIRE HARNESS), and there are dozens of wire harness retainers all over these trucks. And here's the only one that appears to be the right one. Note that the same part is used in two other applications on our trucks - as indicated by the "1" in the right column, which is titled "QTY" and shows how many are needed for each usage. And again, I've never seen one of those despite having worked on many of these trucks. So while the MPC says they where used from 1980 through the end of the catalog in '89, I doubt that or surely I'd have seen one, somewhere. I can see that mechanics may well have left them off when replacing an ignition switch, but I doubt all the trucks I've worked on had all their ignition switches replaced. https://forum.garysgaragemahal.com/file/n120205/14A163_Part_Number.png https://forum.garysgaragemahal.com/file/n120205/Screenshot_of_14A163_At_Ignition_Switch.png It has been determined that this part is not necessary, but just in case someone just had to have it... https://www.rearcounter.com/C3SZ-14A163-B-parts438244.html Got a little more done over the weekend - changed out the engine coolant. The old stuff still looked good, all the hoses were in good shape, etc. No muss, no fuss. Air and fuel filter replacement Oil change Windshield wiper replacement Brake fluid check/possible replacement Engine coolant replacement Hood realignment Radio antenna repair Ignition switch replacement Duraspark module cleanup Fix loose manifold bolt Fix gear selector roll pin Carb adjustment/tuneup (no longer necessary) Tire check & rotation PCV valve/vacuum leak I think next will be the brake fluid replacement, and I'll check and rotate the tires at the same time. Link to comment Share on other sites More sharing options...
Gary Lewis Posted June 28, 2022 Share Posted June 28, 2022 Got a little more done over the weekend - changed out the engine coolant. The old stuff still looked good, all the hoses were in good shape, etc. No muss, no fuss. Air and fuel filter replacement Oil change Windshield wiper replacement Brake fluid check/possible replacement Engine coolant replacement Hood realignment Radio antenna repair Ignition switch replacement Duraspark module cleanup Fix loose manifold bolt Fix gear selector roll pin Carb adjustment/tuneup (no longer necessary) Tire check & rotation PCV valve/vacuum leak I think next will be the brake fluid replacement, and I'll check and rotate the tires at the same time. Progress! Link to comment Share on other sites More sharing options...
1986F150Six Posted June 30, 2022 Share Posted June 30, 2022 Progress! Good work, Matthew! Link to comment Share on other sites More sharing options...
Dorsai Posted August 16, 2022 Author Share Posted August 16, 2022 Got a little more done over the weekend - changed out the engine coolant. The old stuff still looked good, all the hoses were in good shape, etc. No muss, no fuss. Air and fuel filter replacement Oil change Windshield wiper replacement Brake fluid check/possible replacement Engine coolant replacement Hood realignment Radio antenna repair Ignition switch replacement Duraspark module cleanup Fix loose manifold bolt Fix gear selector roll pin Carb adjustment/tuneup (no longer necessary) Tire check & rotation PCV valve/vacuum leak I think next will be the brake fluid replacement, and I'll check and rotate the tires at the same time. Motivation to spend time in the hot garage under my truck has been low, but I did finally drag myself (and Dominic) out there and change out the brake fluid. Got some really filthy fluid out of there, so that was time well spent - and while I was at it I added speed bleeders to make things easier next time. Also rotated the tires while I was at it and got them to the correct pressure - they were all down to 26-28 pounds or so. I thought I'd been keeping a better eye on them than that, apparently not. At any rate, that completes all the safety/reliability work that had to be done before the show - mechanically the truck is as ready to go as can be. I still hope to do the radio antenna and hood alignment before the show, but if that doesn't happen it's no big deal. Air and fuel filter replacement Oil change Windshield wiper replacement Brake fluid check/possible replacement Engine coolant replacement Hood realignment Radio antenna repair Ignition switch replacement Duraspark module cleanup Fix loose manifold bolt Fix gear selector roll pin Carb adjustment/tuneup (no longer necessary) Tire check & rotation PCV valve/vacuum leak Link to comment Share on other sites More sharing options...
Gary Lewis Posted August 16, 2022 Share Posted August 16, 2022 Motivation to spend time in the hot garage under my truck has been low, but I did finally drag myself (and Dominic) out there and change out the brake fluid. Got some really filthy fluid out of there, so that was time well spent - and while I was at it I added speed bleeders to make things easier next time. Also rotated the tires while I was at it and got them to the correct pressure - they were all down to 26-28 pounds or so. I thought I'd been keeping a better eye on them than that, apparently not. At any rate, that completes all the safety/reliability work that had to be done before the show - mechanically the truck is as ready to go as can be. I still hope to do the radio antenna and hood alignment before the show, but if that doesn't happen it's no big deal. Air and fuel filter replacement Oil change Windshield wiper replacement Brake fluid check/possible replacement Engine coolant replacement Hood realignment Radio antenna repair Ignition switch replacement Duraspark module cleanup Fix loose manifold bolt Fix gear selector roll pin Carb adjustment/tuneup (no longer necessary) Tire check & rotation PCV valve/vacuum leak I think you are ready for a road trip, Matthew! Link to comment Share on other sites More sharing options...
1986F150Six Posted August 17, 2022 Share Posted August 17, 2022 Also rotated the tires while I was at it and got them to the correct pressure - they were all down to 26-28 pounds or so. I thought I'd been keeping a better eye on them than that, apparently not. Given that the tire pressures were even, it is normal leakage and not caused by a puncture. Have a safe drive, Matthew! Link to comment Share on other sites More sharing options...
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