I have a problem with oil blow by i have just had top end rebuild but there still seems to be quite a bit of oil blown int the air box

Blown piston rings

Your head has blown =new gasgets and top end rebuild

You have "blow by",..which is a sign of the piston rings going south. Check compression,...it should have around 140psi,...if not,and its blowing by that much oil,then its time for a top end rebuild.

Buday, it sounds like the blower fan and motor needs cleaning and oiling. This should be done annually and you can do it yourself. This should quite things down a bit.

According to your Owners Manual, here's what you need to do.

Servicing and Oiling the Fan Motor:
The fan motor should be cleaned and oiled once each heating season.
To reach the motor, withdraw the metal shroud surrounding the fan
blade by removing the screws on each side. Oil holes are located
on the top at each end of the motor. Use a few drops of #10 motor
oil. To clean the motor, blow air through its ventilation openings
with a vacuum cleaner or low pressure air source (canned air with a
straw nozzle like you clean your computer with works well).

Unfortunately, it does in fact sound like you are in need of a new master cylinder, or at least a rebuild kit if you are feeling confident in your mechanical abilities. (It's not hard to rebuild.)

Hi there

• Low compression, and lots of blow-by forcing oil into the air filter via the the crankcase breather. Sounds like you need a top end rebuild. If you can get your hands on a compression tester, then check it. If it comes in under 120, then certainly time for a tear down and top end rebuild.

• If you put a quick squirt of oil down the spark plug hole and if the compression pressure goes up on a second compression test, then rings/piston/bore are worn. If it does not come back up, then it may be leaky valves, or a blown head gasket.

• do the compression test first. That will tell you where to start. Or, if you have the tools, tear the top end down and inspect. A motor re conditioner/machine shop will help to measure up and tell you if piston, and bore are ok. May just need new rings to freshen up.

Happy to answer any questions that you may have.
regards robotek

if it is foamy, you may be getting water (or coolant) into the engine...diagnosis for that, Blown head gasket. Not much you can do about that. Take it or find a way to get to a mechanic or auto parts store and explain the problem. In my experience this is usually why oil becomes foamy. As for it getting into the air box, i'm not sure why ford put a blow off dump into that area but they did. I took the hose out of the airbox on mine and let it dump out to the ground.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/matthew_d24b835e574ef6ca

isn't that a two-stroke? pull the jug off and check the piston/bore...if you can do that you're okay...Otherwise, call "Lazarus" at GT Thunder in Millersburg, FL and ask NICELY what to do.
P.S. he's a BUSY man be NICE to him!

Hi barhulin

Firstly, some types of after market filters are designed to be run with oil impregnation.

It is a foam Uni Pod type filter designed to be run soaked in oil.


If it is a paper type Pod, then some of these type can be run with the correct filter oil. I use an aerosol spray oil here in Australia to keep our famous "Bull Dust" out. They are often run dry.

If it has the standard paper type OEM production filter and air box fitted, then it should not have any oil on it.
If it does then it will probably relate to oil getting into the air box from the crankcase breather. First thing to check is that the oil is not over the full mark. You will get excessive misting in the oil if the sump is too full. If the oil level is alright, it may have already blown off the excess. Clean out the air box and filter and take it for a ride and get it nice and hot. Then recheck for oil in the air box. If there is still oil appearing and the level is good, then you may have a crankcase pressure problem from blow by. This is generally indicative of failing compression rings or worn piston/sleeve/rings in combinations. Do a compression test of the engine. Low compression will tell you that soon you may have a top end rebuild on your hands. Happy to answer any other questions you may have,. Cheers

regards
robotek