318ti.org forum - View Single Post - 96 318ti new jersey.what is fuel trim p1174

**cooljess76** · 11-29-2008, 08:00 AM

I'd start by looking for leaks. Try spraying brake cleaner on your intake boot while the engine is idling and listen if the engine revs fluctuate. Chances are it's your CCV, but do the leak check first. If you can't find any leaks(cracked or split intake boot), replace the CCV(crank case vent valve) and clean inside the fitting on the back of the valve cover where the hose attaches. You might as well remove the valve cover and replace the gasket while you're at it. Also, check your spark plugs.

11-29-2008, 08:00 AM	#2
cooljess76 NOBODY F's with the Jesus Join Date: Oct 2006 Location: Ventura California Posts: 7,824 iTrader: (6) Photo Gallery	I'd start by looking for leaks. Try spraying brake cleaner on your intake boot while the engine is idling and listen if the engine revs fluctuate. Chances are it's your CCV, but do the leak check first. If you can't find any leaks(cracked or split intake boot), replace the CCV(crank case vent valve) and clean inside the fitting on the back of the valve cover where the hose attaches. You might as well remove the valve cover and replace the gasket while you're at it. Also, check your spark plugs. __________________ 4 MORE YEARS BABY!!!