How to fix stripped cam cap bolt holes w/ cylinder head in place?
'07 hyundai elantra 2.0l cvvt
I made the mistake of ordering a rebuilt head online. The head was supposed to be steam cleaned came w/out cvvt unit and chain had to remove cams to install both. Upon close inspection the head was filthy (cma journals, cams, head, oil galleys hadn't been cleaned, some lifter caps had rust pitting, some cam lobes had slight rust pitting which I smoothed out w/2000gr sand paper). The rebuilder"Clearwater Clinder Heads" won't return my emails. So, I'm left to deal w/faults on my own. Never again! Buyer beware deal locally to avoid getting bit.
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The CVVT (Continuously Variable Valve Timing) system is installed to the chain sprocket of the exhaust camshaft. There is no variation in valve timing of the exhaust cam because the exhaust camshaft is driven by the timing belt. The timing of the intake cam is varied by the relative operation the CVVT vane to the housing. This system helps the engine decrease exhaust gases and increase engine power and fuel economy by changing the valve open/close timing of the intake camshaft.
The code you are getting can be caused by a mechanical problem with the CVVT or with an Engine Control Module (ECM) malfunction. The most common cause of a mechanical failure of this system is debris clogging the very small oil ports that control the position of the CVVT vane hub. Improper oil viscosity can affect this as well as deposits caused by not changing oil at the specified intervals.
There is a Technical Service Bulletin (TSB) that deals with properly checking the CVVT system for mechanical/electrical failures. It is bulletin Number 09-EM-002.
Installation Ensure timing marks aligned  &  . 1. Fit timing belt in anti-clockwise direction, starting at crankshaft sprocket. Ensure belt is taut between sprockets. 2. Slacken tensioner pulley bolt  . Push tensioner pulley firmly against timing belt to tension belt. 3. Tighten tensioner pulley bolt  . Tightening torque: 43-55 Nm. 4. Except Matrix: Turn crankshaft one turn clockwise. 5. Matrix: Turn crankshaft two turns clockwise. 6. Ensure timing marks aligned  . 7. Apply a load of 2 kg to belt at . Belt should deflect 4-6 mm. If not: Adjust position of tensioner pulley. 8. Install components in reverse order of removal. 9. Tighten crankshaft pulley bolt  . Tightening torque: 170-180 Nm
7 is timing mark on cam,pin mark to top,hole in spoke below pin mark lines up with mark on head
6 is crank timing mark,pin mark on crank lines up with mark on block
NOTE this mark is just before top
You have two bolt sizes the shorter or smaller of the two sizes is called M10 the torque is 22ft lbs +65 degrees +65 degrees again The larger of the two bolts is called a M12 the torque for these are 26ft lbs +65+65. There is a tightening order staring at the top center bolt and working in a circle They have to be torqued in three steps. If you dont under stand something about this repost and I can help you farther. If this is helpful please mark that it was I do this for free to help people DRIVE SAFE TIM