Ok so I here a pop under the hood and I open it and its smoking out of the oil filler and turned out to be the oil cap popping off I checked the pcv valve and its clogged by electrical tape. Now I did not do that the previous owner did could this be the problem and also the radiator hoses are kinda baloony and its a new thermestat so idk what should I check with these two problems

 

Replace the hoses and the pcv valve.

 

Well i already did that. But my question was if it was clogged is there anything that could have been affected by it.

 

If your hoses are swelling, then they need replacing before they burst. That means they are old and weak.

 

yeah i replaced the radiator hoses and changed the thermostat but my question is if the pcv gets clogged what could happen to the engine health i already replaced it and the pcv hose as well but im wondering if i should check anything because it got clogged or should it be fine the only reason i ask is cause i'm having a miss fire now that i changed the pcv and hose

 

The PCV system eliminates harmful blowby vapor from the crankcase. If your PCV system stops working, the oil is going to get contaminated faster than it will with a working PCV system. How much damage it might have done would be a function of how long the condition existed, and how often you changed your oil. The symptom is not going to be a misfire.

I'd be concerned with the fact that the crankcase pressure got high enough to blow the oil filler and cap out of the valve cover. The PCV system has a secondary escape path for excessive pressure, and that's the rubber hose that runs from the throttle body to the passenger side valve cover. With a functioning PCV system, that hose supplies clean, MAF metered air from the TB to the valve cover, so the PCV valve vacuum can pull it through the crankcase to get rid of the nasty blowby vapor.

With a plugged PCV valve, the blowby vapor will start to flow out of the valve cover, toward the throttle body. That will often cause oil buildup in the hose, and in the throttle body. That oil may have contaminated the spark plugs.

Question is, why wasn't that enough to vent the crankcase pressure? Answer may be a problem with a piston, broken ring lands, damaged/worn piston rings, etc., allowing excessive blowby. That might be accompanied by a misifre.

 

replace pcv valve and hoses.

 

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Only real way to check for a properly functioning PCV system is to check crankcase vacuum with a manometer. Which no one on this board ever does.