I have had a lot of troubles with my 2005 f150 as of late. I had to replace a timing chain guide and was able to do that successfully. However in the process I have cause what I believe to be a vacuum line leak. I don't know how to find the leak in order to know what to replace. I have lack of power and it idles like it wants to die. Any help would be greatly appreciated.

 

Could also use an unlit propane torch attached to a hose.

 

i found the problem i beleive. I think my purge valve is stuck closed. Question?? Can i just bypass the valve for now til i get a new on?? I think they are kinda pricey.

 

U talking the canister purge valve? Has the green screw on cap? If u are its closed until the tank needs to vent

 

I really think you should check the timing if you haven't . In my 94 f150 I had changed the timing chain only due to an oil leak . I had been having poor performance and blamed allot of components. Yesterday I checked the timing and it was way off. Even though the new chain went on fine and all timing marks were aligned. I now have good acceleration and power .