Attention: TDR Forum Junkies 
Hello. Long time lurker, first time poster.
For many months my truck has very intermittently had a "miss" or "lope" when idling. There is a loss of power when it does this. The first time it happened I was "getting on it" to pass someone on the highway. Truck lost power and started the missing thing. I took it easy and after a while it seemed to straiten up. Since then it will do it upon starting the vehicle. Sometimes it will clear up, sometimes I just drive another vehicle and try it later.
There is no unusual smoke out the exhaust when this happens. When the truck is running normally it runs great, no unusual smoke, power loss or degraded fuel economy.
Until yesterday. Was out in the boonies with wife and daughter. Started truck to go home. It did the "miss" thing very slightly so I headed out. Got about 100' and it started making a loud clicking noise. Not really a knock, more like something clunking around in the engine or under the front of the truck. I pulled to the side of the road and it was smoking heavy black smoke then a lighter colored white/grey smoke. I turned the ignition off and the engine "dieseled" for maybe 5 to 10 seconds. Waited a couple minutes and restarted the truck. It ran very rough and had pretty heavy lighter covered smoke. Parked in a safer area, shut vehicle off and checked oil, etc. Looked for leaks. Oh, I did notice the exhaust smelled like a chemical smell, similar to rancid gasoline. I do use Power Service in the white bottle and had added some to about a half tank of fuel prior to this trip. Anyway, started truck back up and seemed to run normally with the exception of a little black smoke here and there idling so we started driving again. Also noted the clicking noise was only present the one time. While driving home I noticed slight black smoke with slight acceleration which cleared up after driving a few miles then truck ran normal, great, for the rest of the hour drive home. The check engine light never came on. It never has.
I bought the truck new. Has just shy of 150k miles. Don't pull much with it. Maybe a trailered vehicle or tractor a few times a year. I did check for codes with a code reader and found none. I don't want to go to the dealer, another story... I am familiar with gas engines and do all of my own work on my Jeeps and others vehicles but I am a newbie to diesel repair. Sorry for the winded post. Any guidance on where to start is MUCH appreciated!
For many months my truck has very intermittently had a "miss" or "lope" when idling. There is a loss of power when it does this. The first time it happened I was "getting on it" to pass someone on the highway. Truck lost power and started the missing thing. I took it easy and after a while it seemed to straiten up. Since then it will do it upon starting the vehicle. Sometimes it will clear up, sometimes I just drive another vehicle and try it later.
There is no unusual smoke out the exhaust when this happens. When the truck is running normally it runs great, no unusual smoke, power loss or degraded fuel economy.
Until yesterday. Was out in the boonies with wife and daughter. Started truck to go home. It did the "miss" thing very slightly so I headed out. Got about 100' and it started making a loud clicking noise. Not really a knock, more like something clunking around in the engine or under the front of the truck. I pulled to the side of the road and it was smoking heavy black smoke then a lighter colored white/grey smoke. I turned the ignition off and the engine "dieseled" for maybe 5 to 10 seconds. Waited a couple minutes and restarted the truck. It ran very rough and had pretty heavy lighter covered smoke. Parked in a safer area, shut vehicle off and checked oil, etc. Looked for leaks. Oh, I did notice the exhaust smelled like a chemical smell, similar to rancid gasoline. I do use Power Service in the white bottle and had added some to about a half tank of fuel prior to this trip. Anyway, started truck back up and seemed to run normally with the exception of a little black smoke here and there idling so we started driving again. Also noted the clicking noise was only present the one time. While driving home I noticed slight black smoke with slight acceleration which cleared up after driving a few miles then truck ran normal, great, for the rest of the hour drive home. The check engine light never came on. It never has.
I bought the truck new. Has just shy of 150k miles. Don't pull much with it. Maybe a trailered vehicle or tractor a few times a year. I did check for codes with a code reader and found none. I don't want to go to the dealer, another story... I am familiar with gas engines and do all of my own work on my Jeeps and others vehicles but I am a newbie to diesel repair. Sorry for the winded post. Any guidance on where to start is MUCH appreciated!
