Question about Cars & Trucks
Start the vehicle spray carb cleaner on lines and any possible areas for a vacuum leak. The rpms of the vehicle will fluctuate when the spray hits the leak.
Posted on Dec 31, 2012
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Posted on Jan 02, 2017
Are you referring to the plastic line that comes out of the top of the duct, turns and disappears toward the back of the engine? That line goes to the top of the rear valve cover. Use a flashlight and look for the hole on the top of the back valve cover. Look to the right and below the coils. It's tough to see but you can see it. Be careful, sometimes the plastic line can be brittle and break.
Posted on Oct 01, 2009
SOURCE: 2000 mustang 3.8 has p0174
Hey, that's pretty good logic. Why you asking us? Just the same, I would verify the gasket leak by spraying carb cleaner on the gaskets while the engine is running. If the speed changes, there is your leak. You will have to remove the upper manifold first anyway. Be careful not to tear up the gaskets when you pull the manifold off, so you can inspect to see where the leak was--validate the issue, you know. OK?
Posted on Jan 23, 2011
SOURCE: CEL Code 71, V-6 engine.
This code can mean no EGR flow is detected, manually open the valve and see if the engine starts to stall, if it doesn't you have a plugged EGR exhaust gas passage
Posted on Feb 26, 2011
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