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How do I clean my throttle body and it’s hoses?

Old Mar 6, 2020 | 06:29 PM
  #1  
Carlos Man's Avatar
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Default How do I clean my throttle body and it’s hoses?

So I’ve been having a constant misfire in cylinder 4 (check engine light on)

i changed the plugs out and I’m still showing a slight miss fire (premature miss fire cylinder four with no check engine light)

attached is pictures of the new plug with 100miles on it.

i noticed that my throttle body is dirty and wondering if that could be the culprit...?

what is a good product and way to clean the throttle out and it’s hoses?

please help...












 
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Old Mar 6, 2020 | 06:55 PM
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Richard Gallant's Avatar
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You can pull the throttle body and hit with a ton of carb cleaner
Get a citrus based degreaser pull the hoses and spray it down them, you can soak them overnight in a shallow pan. Then pour boiling hot water through them, repeat as required.
Do the PCV mod if you have not already that thing is going to be seriously clogged
The big aluminum bit (IAC I think) carb cleaner works fine - little bursts and a clean rag

Valve covers are tough, there is no good way to get the crap out with them in place. And you have secondary air which makes getting to them tough. You could try an oil soaked 7.62 or 308 cleaning
patch it worked well on mine, but my covers were off.
 
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Old Mar 6, 2020 | 10:30 PM
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Originally Posted by Richard Gallant
You can pull the throttle body and hit with a ton of carb cleaner
Get a citrus based degreaser pull the hoses and spray it down them, you can soak them overnight in a shallow pan. Then pour boiling hot water through them, repeat as required.
Do the PCV mod if you have not already that thing is going to be seriously clogged
The big aluminum bit (IAC I think) carb cleaner works fine - little bursts and a clean rag

Valve covers are tough, there is no good way to get the crap out with them in place. And you have secondary air which makes getting to them tough. You could try an oil soaked 7.62 or 308 cleaning
patch it worked well on mine, but my covers were off.
just ordered the the PCV on amazon, and I’ll start the cleaning tomorrow.

you think it has anything to do with my misfire situation?
 
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Old Mar 7, 2020 | 01:04 AM
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@Carlos Man I would think if that was the issue all cylinders would be affected, but that is a lot of junk. It is possible that the valve seals on # 4 are going or weak in which case overpressure from a clogged PCV breather could be getting excessive oil into 4.
 
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Old Mar 7, 2020 | 03:05 AM
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Carb cleaner on the MAF sensor (don’t touch it! let it air dry), throttle plate/body and IAC valve.
 
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Old Mar 7, 2020 | 10:00 AM
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Originally Posted by Richard Gallant
@Carlos Man I would think if that was the issue all cylinders would be affected, but that is a lot of junk. It is possible that the valve seals on # 4 are going or weak in which case overpressure from a clogged PCV breather could be getting excessive oil into 4.
PCV doesn’t look to bad in my opinion... what do you think...







 
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Old Mar 7, 2020 | 10:54 AM
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That's not the PCV, just the plastic nipple. There is no PCV until you do the mod and put one in that nipples place. The clog will be in the spiral oil separator located in the tube on the passenger valve cover.
 
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Old Mar 7, 2020 | 10:58 AM
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Originally Posted by Dave03S
That's not the PCV, just the plastic nipple. There is no PCV until you do the mod and put one in that nipples place. The clog will be in the spiral oil separator located in the tube on the passenger valve cover.
okay...I’ll go over the sticky again thanks!
 
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Old Mar 7, 2020 | 02:26 PM
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Follow that hose (which is connected to the weak link plastic nipple) and the baffle/oil separator will on the other end just poking out at the valve cover. Remove it from the valve cover & install the hose, then toss the plastic nipple & install the FV308 on the intake side.
 
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Old Mar 7, 2020 | 06:11 PM
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Sorry guys just wanna be clear here... is this the tube holding the baffle located on the driver side?

im not a mechanic but I take on most projects myself and like to be sure.
 
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