Skip to main content ↑ ↓
Topic: 2 unrelated problems on 2004 ISL: exhaust leak, excess oil from oil bypass  (Read 1071 times) previous topic - next topic

Re: 2 unrelated problems on 2004 ISL: exhaust leak, excess oil from oil bypass

Reply #25 –
"Excess oil leakage from the bypass tube. " I had this problem about 5 years ago. Took it to Fort Worth, TX Cummins, after $300, there is a shinny red box and a new blue tube coming from it. No more oil .... so far so good. Mine is a 03 ISL 400.
Former 2003 GV U295 (6230) (2015 - 2025)
Former 94 GV U225 (2013-2016)

Re: 2 unrelated problems on 2004 ISL: exhaust leak, excess oil from oil bypass

Reply #26 –
Here's a picture of one of the side pieces of the manifold.  I don't know what it should look like but repair shop told me there is obvious blow by the slip joint.
Larry Rubin
2004 U295 38' build 6278
2014 Jeep Cherokee

Re: 2 unrelated problems on 2004 ISL: exhaust leak, excess oil from oil bypass

Reply #27 –
Don't leave any paper towel or rag in the catch can. An oilly rag or paper towel is possible to spontaneously combustion
2014 ih45  (4th Foretravel owned)
 1997 36' U295 Sold in 2020, owned for 19 years
  U240 36' Sold to insurance company after melting in garage fire
    33' Foretravel on Dodge Chassis  Sold very long time ago

Re: 2 unrelated problems on 2004 ISL: exhaust leak, excess oil from oil bypass

Reply #28 –
Quote from: Larry Rubin –
Here's a picture of one of the side pieces of the manifold.  I don't know what it should look like but repair shop told me there is obvious blow by the slip joint.

Is this the piece you were talking about in a previous post? Whenever those joints leak they leave a black carbon print on the outside of the manifold where the female end is. Yours looks clean but, I am not there to question the shop. The two joints should fit snug together and then carbon builds up between the joints to seal.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: 2 unrelated problems on 2004 ISL: exhaust leak, excess oil from oil bypass

Reply #29 –
Quote from: Larry Rubin –
Here's a picture of one of the side pieces of the manifold.  I don't know what it should look like but repair shop told me there is obvious blow by the slip joint.

Larry it's difficult to see what exactly is going on. Is the slip joint undercut from corrosion at the slip joint? On light turbocharged exhaust it is common practice to use a clean shop vac to blow air into the tail pipe to pressurize the exhaust with a couple psi to looks for leaks/cracks with bubble solution. Every slip joint normally leaks some, bubbles are normal. Being able to feel the air blowing a foot away is excess. If they leak too much replace the manifolds
Scott

Re: 2 unrelated problems on 2004 ISL: exhaust leak, excess oil from oil bypass

Reply #30 –
Quote from: turbojack –
Don't leave any paper towel or rag in the catch can. An oilly rag or paper towel is possible to spontaneously combustion
While it is possible for engine oil on a rag to spontaneously combust, it's normally a pile of rags but conditions have to be just right. That's why a metal container with a lid is recommended for shop rags and or paper towels.

The big culprit here is linseed oil. It works so well on boots, tool handles, baseball gloves, etc., but even a single rag with linseed oil on it and folded over may ignite.

Good article here on S.C.: Fire Prevention 52: Spontaneous Combustion–Fact or Fiction? (U.S. National...

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: 2 unrelated problems on 2004 ISL: exhaust leak, excess oil from oil bypass

Reply #31 –
Replaced manifold and no leaks.    The area around the leak area was very sooty and as I said, could smell exhaust.    Apparently a rare problem so I guess I won the lottery.  Shop also R/R the housing next to the oil filter and no more leak into the slobber can even with oil at full line. 

Did I mention also had slow tire leak and the slow oil leak in shaft seal per other post.

Just my day for leaks but smiling now and waiting for the next challenge.
Larry Rubin
2004 U295 38' build 6278
2014 Jeep Cherokee
 

Re: 2 unrelated problems on 2004 ISL: exhaust leak, excess oil from oil bypass

Reply #32 –
Quote from: Larry Rubin –
Here's a picture of one of the side pieces of the manifold.  I don't know what it should look like but repair shop told me there is obvious blow by the slip joint.

If it is leaking I think there would soot on the non-mating surface.
Was it cleaned after removal?
Hard to judge.

Tim
Tim Dianics
Pam Sapienza
Vader PupZilla Labrador Canine Beast (AKA Pup)
Columbia, MO
1996 U320 4000
2021 Jeep Gladiator, Diesel