Manifold caked with filth

I noticed how filthy the manifold is after removing the throttle body. Has anyone had to clean theirs?

 

Holy crap…….that’s a crapload of buildup

 

Looks like 100% off road with the air filter delete option.

 

Yikers

 

wow. what year and how many miles?

 

I would start checking the ducts for any cracks. Looks like something might be bypassing the air filter.

 

OK so 2016 off-road, located in Arizona, what kind of air filter you been running? Did you buy this new? How many miles are now? We need some details. This is crazy

 

2016 140k

 

Off topic a bit.. now back flush your radiator for a real shit show

 

Understandable considering OP is in Arizona.

Removing the upper plenum and cleaning it out wouldn't be a terrible idea. That's pretty dirty. You won't be able to stop the small particles entering the engine but cleaning that would help prevent a bigger chunk from breaking off and getting down in the cylinders, where some real damage could occur.

 

what filter? your build log is out of date.

 

Been running k & n filter. The filter has required low maintenance since adding snorkel. Before the snorkel, I had mud potentially penatrate through the air filter. This was several years ago. Since the snorkel, the filter hasn't been getting too dirty.

I've recently been getting a code indicating 5th cylinder missing. I begun replacing soarkplugs which were very black on the tips.

 

^This, no better response possible.

 

through that K&N straight in the trashcan

 

Maybe try a different air filter?

 

K&N is trash. Piss poor filtration. Think of all the dust that motor has ingested.

 

Maybe the oil from the filter being pulled into the manifold and collecting dust and grime. I would only run the oem Toyota air filter in my truck

 

FTFM

 

Looks like a 50 year old sewer pipe.