Attention: TDR Forum Junkies I posted this over at the dieseltruckresource as well, but
I am having a bit of trouble and I am not sure what is wrong. So the truck is an 04. 5 auto 120K, mostly stock, just a smarty (sw2) and edge ez (level 2). All of a sudden, one day the truck began to start funny. You would go out to fire it up and it would crank a little longer than normal, then fire up. Once it fired up, I noticed that for about 5 seconds, it runs a little rough, and puffs a little white smoke. Then it smooths right out and runs good. It usually does it worse when its colder out, or the longer the truck has been shut off. One day when I was driving around town, the truck acted like it was going to quit for a second (rail pressure dropped for a split second), but then regained itself. It has never happened again.
I have a quadzilla commander monitor that I have been monitoring fuel pressures, egt, rail pressure, etc with. Anyhow, lately it looks as if I have been showing a bit lower fuel pressure than normal (normally about 9 psi at idle, now its ~8 or ~7, but at cruising speed 5-6, sometimes going down hills it reads higher, or when you hit the brakes hard), about the same time I had some of the starting troubles.
I tried a new fuel filter, and at the same time I filled up my diesel tank, put a double dose of Power Service cleaner in. Seemed to help slightly but its still there.
Next I checked for codes, no codes at all. I searched the forums and checked my rail pressure at startup, seems to be around 5k psi, but I am not 100% certain because it starts up so fast that I can't see the reading.
I have been checking my dipstick everyday, no extra oil at all (went 600 miles this past weekend).
Today I checked exhaust manifold temps right at the outlet, with an infrared laser heat gun, put it on the flanges, showed good for each cylinder, all around 152-165* at idle, with the #5 at around 170. I think this is normal though.
I have found also that if I rev up the truck to like 2-2500 rpms, when I let off the throttle, it will drop a few hundred rpm's then kinda stick for a sec, then drop a few hundred again, and so on until it gets back to idle rpms. I am not sure if this is normal, or if it is related to the startup problem as well. I never checked this before the problem so I don't know.
Being on a tight budget, I will be doing all the work myself to fix it, unless I absolutely have to have Chrysler check something with their computer. If so what do I ask them to check?
I don't know what to do now, I should probably plug off the rail relief valve and see if that works, but I am not sure what size bolt that is exactly. Anyone have any suggestions? Thanks in advance.
I am having a bit of trouble and I am not sure what is wrong. So the truck is an 04. 5 auto 120K, mostly stock, just a smarty (sw2) and edge ez (level 2). All of a sudden, one day the truck began to start funny. You would go out to fire it up and it would crank a little longer than normal, then fire up. Once it fired up, I noticed that for about 5 seconds, it runs a little rough, and puffs a little white smoke. Then it smooths right out and runs good. It usually does it worse when its colder out, or the longer the truck has been shut off. One day when I was driving around town, the truck acted like it was going to quit for a second (rail pressure dropped for a split second), but then regained itself. It has never happened again.
I have a quadzilla commander monitor that I have been monitoring fuel pressures, egt, rail pressure, etc with. Anyhow, lately it looks as if I have been showing a bit lower fuel pressure than normal (normally about 9 psi at idle, now its ~8 or ~7, but at cruising speed 5-6, sometimes going down hills it reads higher, or when you hit the brakes hard), about the same time I had some of the starting troubles.
I tried a new fuel filter, and at the same time I filled up my diesel tank, put a double dose of Power Service cleaner in. Seemed to help slightly but its still there.
Next I checked for codes, no codes at all. I searched the forums and checked my rail pressure at startup, seems to be around 5k psi, but I am not 100% certain because it starts up so fast that I can't see the reading.
I have been checking my dipstick everyday, no extra oil at all (went 600 miles this past weekend).
Today I checked exhaust manifold temps right at the outlet, with an infrared laser heat gun, put it on the flanges, showed good for each cylinder, all around 152-165* at idle, with the #5 at around 170. I think this is normal though.
I have found also that if I rev up the truck to like 2-2500 rpms, when I let off the throttle, it will drop a few hundred rpm's then kinda stick for a sec, then drop a few hundred again, and so on until it gets back to idle rpms. I am not sure if this is normal, or if it is related to the startup problem as well. I never checked this before the problem so I don't know.
Being on a tight budget, I will be doing all the work myself to fix it, unless I absolutely have to have Chrysler check something with their computer. If so what do I ask them to check?
I don't know what to do now, I should probably plug off the rail relief valve and see if that works, but I am not sure what size bolt that is exactly. Anyone have any suggestions? Thanks in advance.
