Join Date: May 2010
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making a slite skipping and hissing sound
04 with about 70000 miles
did the bullet proof head gasket and egr kit and seems to have no leaks so far but engine is making a slite skipping sound and a hissing sound. im thinking the hissing sound is due to a crank in the up pipe. the hissing sound is only under load or boost and also has loss of power. the skip is only pretty much at an idle but seems to be fine at a higher rpm.
also installed a new turbo and had the intercooler checked but no problems. up pipe?