No power,chuggn, knockn

[RRRDAD]

I thought I had this figured out but I guess not and we need to hit the road this weekend towing a trailer...My 99 f350 started chuggn and you could hear the injectors rattling when I needed to accelerate up a hill or to pass someone.....I would also get a service engine soon light...I changed the fuel filter and the cps.......I don't get the service engine light now under acceleration but the truck ran around 10 miles and then started losing power and chugging away........no codes are stored........I am running bio diesel now and I have made sure to keep extra fuel filters with me on trips... I've been through 2 so far..I exited off interstate and got on the local streets and it ran fine. We need to travel this weekend ....Any ideas?

[bigcountrysg]

Go back to regular diesel and see how it runs. Change your fuel filter and through some fuel additive into the tank as well as some injector cleaner. Try that out. Also see if you can get some codes since you say your cel light came on.

[SCUFFY828]

Originally Posted by RRRDAD

I thought I had this figured out but I guess not and we need to hit the road this weekend towing a trailer...My 99 f350 started chuggn and you could hear the injectors rattling when I needed to accelerate up a hill or to pass someone.....I would also get a service engine soon light...I changed the fuel filter and the cps.......I don't get the service engine light now under acceleration but the truck ran around 10 miles and then started losing power and chugging away........no codes are stored........I am running bio diesel now and I have made sure to keep extra fuel filters with me on trips... I've been through 2 so far..I exited off interstate and got on the local streets and it ran fine. We need to travel this weekend ....Any ideas?

if the check engine light came on you should have a code in memory, does sound like it might be a fuel problem, i do agree with putting regular diesel in tank and see how it runs , get codes pulled if you can before going much farther

[RRRDAD]

ok thanks guys......I've been running the bio for 5 months now but that doesnt mean it's not affecting it...the bio cleans everything good so maybe some crap has plugged something up..... Eventhough the service engine light comes on there are no codes stored....I will unhook the trailer and have it scanned again...I have it scanned at auto zone... Is this ok? On my 95 someone suggested to clean out the little screen that is in the fuel line before the fuel bowl....Does my 99 have this and could it be an issue?

[bigcountrysg]

Originally Posted by RRRDAD

ok thanks guys......I've been running the bio for 5 months now but that doesnt mean it's not affecting it...the bio cleans everything good so maybe some crap has plugged something up..... Eventhough the service engine light comes on there are no codes stored....I will unhook the trailer and have it scanned again...I have it scanned at auto zone... Is this ok? On my 95 someone suggested to clean out the little screen that is in the fuel line before the fuel bowl....Does my 99 have this and could it be an issue?

Maybe the fuel sock in the fuel tank maybe clogged causing a fuel starvation at wide open throttle.

[RRRDAD]

I assume you need to drop the tank to do this? Is it just the 2 straps holding the tank? once the straps are off can I just drop the tank or do I need to take fuel lines off first? thanks for the help

[vitalidle]

From what I have read on here autozone's scanner wont read all the codes.

[bigcountrysg]

Originally Posted by RRRDAD

I assume you need to drop the tank to do this? Is it just the 2 straps holding the tank? once the straps are off can I just drop the tank or do I need to take fuel lines off first? thanks for the help

The way I do it is raise the bed of the truck. I remove the bolts that hold the bed down and then use a jack and jackstands to raise the bed up high enough about 2 feet to remove the fuel pickup tube.

But you can do it by dropping the tank down. I believe you will have to remove the fuel lines at the tank.

[RRRDAD]

ok thx........I did some reading and what can you tell me about the sensor in the foot pedal that senses pedal movement....? I did recently put in a simple power programmer and one of the wires connects to the wires on the pedal.. do you know anything about this? Thx M

[j.dehn]

My 95 did the same thing a few months ago when I filled up with biodiesel. It cleaned my tank so well the stainer on the bottom of the pickup fell apart and sucked all the stuff that was cleaned from inside my tank into the switch so my front tank wouldnt work. Had me baffled for a few weeks because it ran fine off the rear tank(with regular diesel) and would run a few miles on the front then the truck would die and almost shut off. Could have just been a coincidence but I havent ran any more bio through my truck.

Jason