Barely got her home today!
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Lead Driver
Joined: Apr 2001
Posts: 6,175
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From: Texas
Barely got her home today!
My 69 F250 almost left me stranded today. She started to miss, sputter, backfire and die only to be revived by the forward motion of the truck. It seems to idle OK, but any throttle and it starts missing. It seems to run OK for a few short spurts. The truck sat for about a week, and was running well last week. The problems started after a running some errands, short trips.
The ignition is all MSD, including the billet distributor, so I don't think my problem is ignition.
I'm thinking about the fuee pump, but would it even idle if was shot?
Any suggestions for beginning troubleshooting?
The ignition is all MSD, including the billet distributor, so I don't think my problem is ignition.
I'm thinking about the fuee pump, but would it even idle if was shot?
Any suggestions for beginning troubleshooting?
Senior User
Joined: Mar 2002
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From: USA
Barely got her home today!
I'd drain out a mason jar of gas and let it set overnight and see how much water or junk is in the tank before I'd do the fuel pump. I've never had one idle with a bad fuel pump. Doesn't mean they won't, just saying mine never did. I'm sure you've probably arealdy checked the filters and such right? Let us know what you find.
Post Fiend
Joined: Feb 2001
Posts: 6,624
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From: Missouri
Barely got her home today!
Might want to check the filters in your carb also if you have them. I like my pressure guage. The only fuel delivery problem I could be having if it is reading 7psi is clogged filters.
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Lead Driver
Joined: Apr 2001
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From: Texas
Barely got her home today!
Mr. Ratsmoker,
I was hoping to run into you, so to speak. I'm thinking about gearing my truck with much smaller gears so that I'm not running 3400 RPM at highway speeds. I would still like to pull a trailer if needed. Do you ever pull anything? I know you're not setup to pull with the high revving engine and the 3.25 gears, but I figure an FE and C6 are good for some pulling, regardless of engine setup and gears.
I was hoping to run into you, so to speak. I'm thinking about gearing my truck with much smaller gears so that I'm not running 3400 RPM at highway speeds. I would still like to pull a trailer if needed. Do you ever pull anything? I know you're not setup to pull with the high revving engine and the 3.25 gears, but I figure an FE and C6 are good for some pulling, regardless of engine setup and gears.
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Joined: Jun 1999
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From: LAT 46.55501° & LON -122
Barely got her home today!
I wouldn't count-out that MSD just yet. I installed one of their ignition timing controls and barely made it a mile before my truck gradually lost all power above an idle. I turned around in someone's driveway but had no power to get out. Luckily, I left all of the old wiring intact so that I could re-install my original setup if necessary. I bypassed the MSD, and was back on my way again and running fine. After I got home, I double checked the MSD instillation according to the instructions and found nothing was wired wrong. I still need to talk to MSD about the problem before the warranty expires.
Elder User
Joined: Aug 2001
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From: Collierville, TN
Barely got her home today!
I had a '66 Pontiac (389HO V8) that had symptoms like you describe for a few days before the fuel pump finally gave up the ghost (I knew a lot less about cars and trucks, then). It would sometimes just completely lose power and sputter, only to recover soon thereafter.
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Lead Driver
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From: Texas
Barely got her home today!
[updated:LAST EDITED ON 07-May-02 AT 01:49 AM (EST)]Looks like I found the suspect. The white wire that would normally go from the MSD 6AL to the Ford distributor was shorting out. It is unused with the MSD distributor. The high tech insulator (electric tape), that was wrapped arounded the end connector was coming off and the connector was arcing to the intake manifold. I drove it to the carwash and back without any issues. The Fuel pump appears to be working well.
Thanks for the suggestions.
Thanks for the suggestions.
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Post Fiend
Joined: Feb 2001
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From: Missouri
Barely got her home today!
I wouldn't be afraid to pull anything my truck was originally intended to. I wouldn't cut back all the way from your 4.10 to 3.25s. That would make life pretty hard on the tranny. If you do want to go with 3.25s I would be more than happy to trade you third members! 
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Fleet Owner
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From: Creedmoor, North Carolina
Barely got her home today!
Sean, Can you define what you mean by "That would make life pretty hard on the tranny"? 
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Post Fiend
Joined: Feb 2001
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From: Missouri
Barely got her home today!
The higher the gear in the back the more it takes to get the truck moving and the longer the converter will be in slip range. This will cause more heat and wear. In other words with a lower gear you will get more torque to the tires with less work from the engine and trans. Same would go for the clutch in a manual.
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Joined: Oct 1999
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From: yes
Barely got her home today!
[updated:LAST EDITED ON 07-May-02 AT 07:50 PM (EST)]just out of curiosity rat, what RPM do you turn at 60mph? I'm going 3000 with 4.10's and 235/75R15's and I'd kinda like to run 3.25's for better highway speed or highway runs, second is good to just shy of 60 right now so I'm thinking when I get the 410 in and if I went to 3.25-3.50's I'd be right in the range for quick passing, yeah that's it 
Elder User
Joined: Jan 2002
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From: Texas panhandle
Barely got her home today!
GTEX, that white wire on the MSD can be used for an antitheft switch. Just wire it to a toggle and the other terminal to a ground. Then when you leave your vehicle, you can flip that switch and know that when someone tries to hot wire that vehicle it will just crank and not start. Cheap insurance. This is covered in your instructions and it works.
Post Fiend
Joined: Feb 2001
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From: Missouri
Barely got her home today!
I like the idea of setting the rev limiter to about 1500rpm. That way they get the stealing part done but can easily get caught. Wouldn't that suck to get in a truck and start it up thinking all you gotta do is get away and find out it only goes 10MPH.
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Lead Driver
Joined: Apr 2001
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From: Texas
Barely got her home today!
Thanks for the info on the "security system", sounds like something I might try.
regarding the gears, I was not thinking as low as 3.25, that's not really an option with the Dana 60. I think I can go as low as 3.33, but would probably be looking at something in the 3.55 range.
I figure I've got the suspension , transmission and brakes to handle just about anything I'm willing to put behind the truck. If my boat get's as big as I'd like :-) , I might have to change the cam and re-tune the carb. Do you guys think I would have to abandon the 750 carb to get the best low-rpm torque numbers? What about the RPM intake, would it be hurting the torque numbers?
I guess what I really want is one of those Gear Vendor Overdrive units! If you guys see one for a C6 anywhere, let me know!
regarding the gears, I was not thinking as low as 3.25, that's not really an option with the Dana 60. I think I can go as low as 3.33, but would probably be looking at something in the 3.55 range.
I figure I've got the suspension , transmission and brakes to handle just about anything I'm willing to put behind the truck. If my boat get's as big as I'd like :-) , I might have to change the cam and re-tune the carb. Do you guys think I would have to abandon the 750 carb to get the best low-rpm torque numbers? What about the RPM intake, would it be hurting the torque numbers?
I guess what I really want is one of those Gear Vendor Overdrive units! If you guys see one for a C6 anywhere, let me know!