Cleaned engine bay and saw oil in intake tube
#1
Cleaned engine bay and saw oil in intake tube
hey guys so i was washiing my engine bay with some degreaser and it look ok. see pics. then i wanted to clean my tb and i took it off and happen to look inside my intake tube and saw what seemed to be oil in the groves. also in the tb there was a thin coat of very dirty oil on the surface. i was wondering id that is normal to have that like maybe for the dirt to stick to or somethnig.... or is there a problem... btw i used this extream clean stuff in a blue bottle from simple green.... is where somethign else that works better from home depot?
dirty
clean. i need to do it again and get in nooks and cranies
dirty
clean. i need to do it again and get in nooks and cranies
#4
#7
i agree with rob... a bad PCV valve can cause this, as the blowby gases aren't being sucked back into the intake manifold, they are being sucked into the intake, on the airfilter side of the throttle body...
my bike had this issue, it was almost like a thick grease on the intake tube, and it's a dual carb setup... does your truck ever back fire? that is what was causing my issue on my bike, and my airfilter was all burnt on the inside
this COULD also be caused by the natural oils in the air, condensing on the intake tube, but this would take a long period of time to happen (similar to how your throttle body gets dirty) and is highly unlikley that this is the source of your issue
my money is on the PCV valve
my bike had this issue, it was almost like a thick grease on the intake tube, and it's a dual carb setup... does your truck ever back fire? that is what was causing my issue on my bike, and my airfilter was all burnt on the inside
this COULD also be caused by the natural oils in the air, condensing on the intake tube, but this would take a long period of time to happen (similar to how your throttle body gets dirty) and is highly unlikley that this is the source of your issue
my money is on the PCV valve
#8
#9
stuck open, it will cause symptoms similar to a vacuum leak, stuck closed will cause blowby gas issues..
#10
#15
#19
To make the job even more fun, many late model Fords have a coolant tube wrapped around the PCV body to prevent ice formation in extreme cold. This just adds to the experience.
Of course, all of this means that a 2 minute R&R job grows to 20 minutes....and the price of the valve jumps from about $4 to over $20....
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The 2003 Ranger shop manual gives a vague non-description of the PCV valve replacement on the 4.0L SOHC. Without "official" directions, here's what I did, right or wrong:
- Wait for engine to cool.
- Locate the PCV valve in the rear of the driver side cam/valve cover.
- Pull the large PCV elbow off the PCV valve
- Clamp off the two small coolant hoses that lead to the horseshoe tube. I used two small needle-nosed Vise Grips.
- Squeeze and slide the constant tension clamps up the hoses.
- Remove the hoses from the horseshoe tube.
- Rotate the PCV valve 1/3 turn CCW to release it.
- Reassemble in reverse order.
This picture of the 4.0L SOHC PCV valve shows the coolant "horseshoe" and the screw-in base.
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Bumpncarstereo
4.0L OHV & SOHC V6 Tech
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02-15-2009 07:04 AM