Dipstick Blowing Out at High RPM
Road Captain
Joined: Jan 2009
Posts: 714
Likes: 120
You might want to do a leak down test on your cylinders to check the ring seal. Next check your crank case to be sure that there is sot to much oil in your sump. After that, you could remove your dip stick mount, drill and tap a 14/20 hole in the side, drill a hole in the dip stick being careful not to drill into the dip stick itself and simply screw in a 1/4" bolt to lock the dipstick in.
Also, I would run a full quart low of oil and make sure that motor is venting and breathing properly.
Road Captain
Joined: Sep 2006
Posts: 749
Likes: 2
First, what is included in your build? Did the builder change the oil pump? Lifters? etc. I had a similar problem with a 116" twin cam build 6 years ago. I was running a feuling oil pump with the S&S breather fix (can't think of the name of it, fits behind the oil pump). It was in a 1999 Road King with the breather line from the engine going to the top of the transmission vice to the oil filler neck. Feuling blamed S&S, S&S blamed Feuling. I went with the S&S fix, e.g. converted to the motor breather line going to oil filler neck, removed Feuling pump and installed stock pump...
Road Master
Joined: Feb 2010
Posts: 1,220
Likes: 24
From: here
im havin this same problem.
i replaced the breather tubes with newer o ring style they are puffin equally. i was in the real cold below freezing could this be the prob also did 50 miles of dirt roads...
2005 flhti v&h 2 into 1 stage 2 remap have had 12000 miles of no problems till this.
i am on my 3rd dipstick last one must have went into someones back yard or on the roof. just drilled and tapped a tech12 line on to the dipstick and rigged it so i will never loose this one, but it can still pop out and make a mess. i have been riding it today a little at a time and letting it get nice and warm and it seems to be cleaning up.
i am not hammering it i am kinda taking it easy only time it smokes is on downshiffting. thanx for any help guys.
tim
i replaced the breather tubes with newer o ring style they are puffin equally. i was in the real cold below freezing could this be the prob also did 50 miles of dirt roads...
2005 flhti v&h 2 into 1 stage 2 remap have had 12000 miles of no problems till this.
i am on my 3rd dipstick last one must have went into someones back yard or on the roof. just drilled and tapped a tech12 line on to the dipstick and rigged it so i will never loose this one, but it can still pop out and make a mess. i have been riding it today a little at a time and letting it get nice and warm and it seems to be cleaning up.
i am not hammering it i am kinda taking it easy only time it smokes is on downshiffting. thanx for any help guys.
tim
HDF Community Team
Joined: Jun 2006
Posts: 12,773
Likes: 2,603
From: san antonio
OK, I pulled the rocker covers off and replaced the filter. Although the filters were filthy, and covered with oil, it did not seem that they were restricting too much air. So the question is now, which holes do I need to drill out? I am assuming that I need to take off the entire rocker box in order to get to them?
Venting the breathers to the atmosphere will help too.
Stage III
Joined: Jan 2010
Posts: 3
Likes: 0
If the motor is smoking on decell, It might be time for a freshen up on the heads/cylinders. Excessive blow by will cause this to happen. Also, don't forget to drill,tap and screw a safety bolt in your dip stick housing. It is not worth the chance of oiling your tire and having an accident while you are working on this problem.
What are your build spects?
What are your build spects?
Road Warrior
Joined: Nov 2007
Posts: 1,984
Likes: 7
Got to go back to basics.
If the engine, including the oil tank (all the same system), is pressuring up. Ask yourself, WHY?
What would cause that?
There is a whole lot of air movement in the engine as the pistons go up and down. This is not what you all are talking about.
Oil goes everywhere and gets separated at the separator. This is not what will cause high pressure.
Plugged vents or leaking past pistons rings. Once had a Mud Dauber plug up a vent hole.
If the engine, including the oil tank (all the same system), is pressuring up. Ask yourself, WHY?
What would cause that?
There is a whole lot of air movement in the engine as the pistons go up and down. This is not what you all are talking about.
Oil goes everywhere and gets separated at the separator. This is not what will cause high pressure.
Plugged vents or leaking past pistons rings. Once had a Mud Dauber plug up a vent hole.
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Banned
Joined: Mar 2007
Posts: 3,706
Likes: 7
From: Woodstock, Ont , Can
Test the breather umbrellas by trying to blow into them. They should only work one way. If you can blow into either one the pressure will never drop to a near vacume state and venting will be aggressive enough to blow the cap off. Just did a 113 build and had James gasket set with it. Tested the umbrellas before bolting it together. Both leaked. Fired them in the garbage and put the stockers back in since they only had 13 k on them. The James name is embosed on the edge of the disc and this causes a warped area that leaks. DUH.
If you've covered all the other basics, do a leakdown test on the cyls, since breathers are only capable of so much flow and after that put pressure on the cap. Rings can fail at low milage also so don't assume they are not the problem.
Ron
If you've covered all the other basics, do a leakdown test on the cyls, since breathers are only capable of so much flow and after that put pressure on the cap. Rings can fail at low milage also so don't assume they are not the problem.
Ron