Truck idling bad - died on stop sign.
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Senior User
Joined: May 2005
Posts: 447
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From: Jacksonville IL
Truck idling bad - died on stop sign.
I do not drive my 1979 F100 much on the highway. Yesterday, I took it to a place about 40 miles from where I stay. I reached my destination well and good - parked my truck. After about 30 mins, I started the truck. It seemed to idle rough. But if you give it some gas, it seemed fine. When I stopped on a stop sign, it again idled bad and died on me. It started back up and I had to put it on park and give it slight gas to keep it running. I barely was able to put in on gear and drive away once the light turned green. It did that to me in couple stop lights. After that, it seemed to idle better for a few seconds and then started to idle rough on me. I glanced at the engine temp and it was about 215 degrees when idling. Goes down to about 190 when going down the road. Goes to about 200 - 210 when on the highway.
I am not sure what's wrong. I am not sure if engine needs is running too lean or too rich when idling. The carb is a 600cfm edlebrock.
I am not sure what's wrong. I am not sure if engine needs is running too lean or too rich when idling. The carb is a 600cfm edlebrock.
Thread Starter
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Senior User
Joined: May 2005
Posts: 447
Likes: 10
From: Jacksonville IL
I use to have a vacuum leak in the intake, but I fixed that about six months back. Guess I will check that again.
One other question - I need to cut down my fuel pressure to a max of 6psi. I have a cheap autozone regulator right now, but don't seem to be working right. I am debating whether an Edlebrock pump with a max of 6psi will be the way to go or just buy a good regulator from NAPA and be done with it.
One other question - I need to cut down my fuel pressure to a max of 6psi. I have a cheap autozone regulator right now, but don't seem to be working right. I am debating whether an Edlebrock pump with a max of 6psi will be the way to go or just buy a good regulator from NAPA and be done with it.
Senior User
Joined: Nov 2005
Posts: 166
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From: Rainier, OR
Those are similar symptoms that I had when my timing chain slipped a tooth. I'm not sure about the 79's but my 65 had the phenolic teeth on the camshaft sprocket and they were worn enought to slip a tooth. I had a really hard time keeping it running and it finally died and I couldn't get it restarted. Hope that's not what it is for you.
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Senior User
Joined: May 2005
Posts: 447
Likes: 10
From: Jacksonville IL
It starts fine. It seems to be an intermittent problem - looks like at certain temperature. I actually replaced my timing chain and sprokets a year ago - I would not think that they will wear out that soon. More so because I have to granny the truck - it gets one heck of spark knock if I stomp on the gas.
