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Help!!!bad misfire no power tried everything

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91eclipse4g63t

Probationary Member
10
0
Nov 17, 2008
Benton, Arkansas
ok so i broke my timing belt a couple of weeks ago and as usual it bent all 16 valves so i took my head to my local dsm specialist(supposedly) polk performance of alexander arkansas and he rebuilt my head for me and i put it back together and it was all good but then i started to notice a misfire and i thought it just needed a tune up and i replaced my plugs and wires still missing so i checked timing(good)fuel pressure(good)injectors(working)and i also noticed some noise in the head so i pulled the valve cover off and checked everything out and it all seemed fine until i saw ALL of the intake cam caps LOOSE is there anything associated to this happening that the cam being loose could cause? Please let me know asap.....91 eagle talon tsi
 
The noise is normal for a rebuilt head. It should stop after a few miles. It may have jumped time since the cam caps are loose. You need to take the timing belt back off and re-torque the cam caps. Then reinstall the t-belt. If that doesn't fix it then well go from there.
 
Ok...well i tightened the cam caps and checked timing they are all ok now but im still running bad and as for the noise it made noise for the first probaly 10 or so miles and after that it was the most quiet head ive ever heard on a 4g63 and about 400 miles in that is when the noise started...i took it up to polk today and he said it wasnt his fault and he wasnt going to warranty it and could do nothing but talk shit about me "bothering" him with my problems what an ass :(
 
you never mentioned anything about checking the timing..........
Having cam caps loose can result in major failure. Failure can happen in many ways. Lack of oil to head components(turbo, cams and lifters) can destroy journals of all components. Loose cams can cause timing to jump teeth(which is what it sounds like). If you jump 1 or 2 teeth no harm will come about, just re-time and drive but if you jump more than 3 teeth ,more than likely, your pistons will hit your valves.
FROM VFAQ:

The camshaft sprocket dowel pins must be at the 12 o'clock position and the camshaft sprocket timing marks must be aligned together (left sprocket at the 3 o'clock and right sprocket at the 9 o'clock positions) (Figure 2).

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Figure 2
Both camshaft sprocket timing marks must be in line with the top surface of the cylinder head (Figure 3). [A straight edge (ruler) laid across the center of the cam shaft attaching bolts will help you to better see and align the timing marks.] The crankshaft and oil pump sprockets must also be aligned with their respective timing marks (Figure 3).

NOTE: Crankshaft may need to be rotated up to six turns before all sprockets are properly aligned and the rear balance shaft is in phase, due to the oil pump-to balance shaft gear ratio.
 
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