Re-torque intake manifold bolts
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Re-torque intake manifold bolts
HI: I searched in vain for anything about this topic so asking everyone. I saw the smoke test myself and the interface between the #1 (front RH) intake to head leaks. The shop who did this tells me this is cause of lean codes and CEL. Seems logical to me but they want to R&R the manifold and put new gaskets on. Then they cautioned that if manifold is cracked or warped, gaskets will not fix it. New one is $1500 while "guaranteed" ebay ones are $125. If I could learn the torque wrench setting, I might be inclined to reseat those big bolts to prescribed number and see what happens. Am I the only person wondering this or has anyone tried it already and succeeded or failed? The car has 131K on it and had also sprung vacuum leak at EGR. And I do mean the actual EGR itself, not the interface to the intake. My fuel trims are better than I have ever seen them with new EGR but still drift to the rich at low Rs. I assume this is due to O2 sensors telling ECU to push more gas to get right stoichiometry. Thank you.
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