Since the weather turned colder I started noticing a wet spot growing larger on my frame in the front wheel well. It wasn't dropping, just the greyed black was black black. Anyway, I crawl under to have a look. The lines that run along the frame are seeping. They're run up to the stock fuel can, I believe one is a return line. Looks like the lines go from hard line to rubber? Or is the rubber line ust a protection over a hard line?

Do I need to take care of this? I'm assuming the weather has compromised the fit between hard line and rubber (my ps lines did this before)

The stockcan was a little moist so I gave the cap a small 1/8th-1/4th turn to snug a hint. I figured that oring has also felt the cold.


BTW that small silicon rubber hose for the coolant bypass on the other side of the block that is notorious for leaking in the cold is still dry as a button...or whatever is known to be dry. If you haven't changed that one out yet, you're missing out on the fun

 

It's seeping from somewhere higher than you are looking. Go up to the return line, the rail, etc.

 

Yeah I think you're right. I need to squeeze my self in there and get a better look. I think I'll simple green the area to get it cleaned up so I can determine more precisely where it's leaking.

 

I believe the hard lines transition to a black nylon /poly line, which is covered with a length of rubber jacket. That is not a common issue and I would not be inclined to replace the short length of line unless it developed into a leak.

One place to check for seepage is the CP3 pump as they tend to leak where the case is put together. I have witnessed this on our company trucks once the colder weather sets in due to it's effect on the viton o-rings within the pump.

 

Clean it down, dry it off and sprinkle baby powder on all the fuel lines and fittings. Get it coated well and then start it up. The area that is leaking will be at the highest point of the discoloration and will be very noticeable

Do not try to figure out where the leak is by feel Keep your fingers, eyes and all other parts of your body away from the high side. It's a good way to lose fingers, ears, hands, etc., etc.

 

Cleaned the area up with simple green. Will keep feeling in there to figure out what's seeping.







While looking under there I discovered that the line from my GDP filter going to the CP3 is cracked where it makes the sharp turn down. I guess that will need to be replaced before it blows out. Question, if I pull that hose off will there be fuel in it? If so, how do I drain that? Or just a matter of pulling it off and letting any fuel in the lines drain?



Thanks

 

Pull it and you'll lose some fuel. Not much though. Just what's in the line and maybe some risidual out of the cp3. No other way really. How is that line cracked???

 

Ok.

The line looked like it cracked, you know when you try to make too tight a bend and it tears the line. Well, that's the only thing I can think off. But the bend radius isnt that tight. I don't know, maybe the extreme hot this summer ten the cold now took advantage of it. I'll try to snap a clear pic this afternoon. The cracks look like dry rot cracks. Lots of small ones.

I just installed the GDP kit last Christmas/January and peak under the hood regularly and noticed it just now.

 

Snapped a better pic of the line

 

That hose has life left in it. That can't be your problem.

 

Yeah, I know it's not leaking, it's perfectly dry But thanks for the confirm on it still being good to run. I threw a spare hose in the truck just in case. Like I said earlier, I saw this hose cracked as I was under the hood looking at the leaky hoses.

 

It's always a good idea to have spare parts on hand. I keep a spare belt and fuel pump on board and a decent tool box also. Fuses. Duct tape. Wire. Extra ammo. Things like this...