Need Help Diagnosing problem ASAP plz
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Senior User
Joined: Jul 2010
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From: LVT, NM
Need Help Diagnosing problem ASAP plz
Alright well took half a day to finally be able to get my dads truck home. His truck is idling real rough, blowing out smoke blackish/blueish, and has a hard knocking sound? We did stop to put a little bit of diesel at a store and it started doing this shortly after......... Suggestions? Please and thanks you guys.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
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From: Spanaway
I would start with draining the water separator and filters. I say this because you said that you
got fuel before this all started. A plugged up filter will do a lot of nasty things. It would help
if you knew the fuel pressure. Not do you have any gauges? That is going to tell you what
the next step will be.
Sean
got fuel before this all started. A plugged up filter will do a lot of nasty things. It would help
if you knew the fuel pressure. Not do you have any gauges? That is going to tell you what
the next step will be.
Sean
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Senior User
Joined: Jul 2010
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From: LVT, NM
Well unless I can use my Livewire off my truck and hook it up to his we won't have any other gauges...... As for draining and changing filters we are actually going to pump out all the fuel in the tank and change the filters this morning. Then fill it up with fresh fuel and some additive (diesel kleen).
Oh something I forgot to mention he called me after he drove the truck for almost 100 miles with it acting like this. (Which is when I told him just to pull over and kill the truck)
Oh something I forgot to mention he called me after he drove the truck for almost 100 miles with it acting like this. (Which is when I told him just to pull over and kill the truck)
Fleet Owner
Joined: Nov 2003
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Let him know that his situation is the reason that a fuel pressure gauge is so important! If it is poor fuel, then the primary filter may easily be plugged and causing low pressure at the injectors. Who knows how long the injectors can "endure" low fuel pressure.
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Senior User
Joined: Jul 2010
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From: LVT, NM
Bismic thanks I'll let him know. (Main reason I've got a fuel gauge for mine on the way) I also have the fuel regulator blue spring, think I ought to have him put it on his truck? It is still brand new and in package....
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Senior User
Joined: Jul 2010
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From: LVT, NM
Alright I'll just keep it on standby for the time being then. Let's see what happens, on our way to pump fuel out and replace filters and drain water seperator.
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Senior User
Joined: Jul 2010
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From: LVT, NM
Well got the filters off and fuel pumped out.... Old primary filter was half black and secondary was completely black. We changed them 7000 miles ago and they were good. The fuel came out looking **** yellow..... fresh fuel was a darker yellow.... added 2 quarts of tranny fluid to the fuel and the truck is still doing the same thing it was.......
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Hotshot
Joined: Apr 2010
Posts: 19,056
Likes: 235
From: Saratoga Springs,UT
You have Fuel Knock
Its Going to hydrolock or blow a Headgasket or Burn a Hole in a Piston
Basicaly its dumping Fuel into the cylinder NOT GOOD
STOP Trying to Run it!!!your going to KILL IT!!!!
Its Going to hydrolock or blow a Headgasket or Burn a Hole in a Piston
Basicaly its dumping Fuel into the cylinder NOT GOOD
STOP Trying to Run it!!!your going to KILL IT!!!!
Hotshot
Joined: Apr 2010
Posts: 19,056
Likes: 235
From: Saratoga Springs,UT
Maybe you can Bubble test before you pull All Glow Plugs
If it fails the Bubble test and you Pull glow Plugs Stay OUT of the Engine Bay cause that Diesel fuel will shoot out of there Harder then Any Pressure washer you have used it comes out with Lethal Force
If it fails the Bubble test and you Pull glow Plugs Stay OUT of the Engine Bay cause that Diesel fuel will shoot out of there Harder then Any Pressure washer you have used it comes out with Lethal Force
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Senior User
Joined: Jul 2010
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From: LVT, NM
:O well if that's the case I'll just load her up on the car hauler and take her to the diesel shop. No need for dad and I to be messing with pressure that high outside of work. I appreciate all the info. She's going to get all new injectors at once this way. That way we don't have to go back in again in the near future. Any idea what could have caused this?