Development

[RadioFlyer91]

Thanks for the response on my problem. I am keeping the responses in mind to service the truck. Today I was doing some more investigation when I had some time and found something else that might make the O2 read lean. I am thinking about this because I had a fellow student who changes oil on a daily basis saying that my crankcase doesnt appear to be contaminated to him.

What I found was a vacuum line both damaged and dry rotted. This elbow connects the line running from the carbon canister through the actuator into the throttle body for gas vapor recirculation. I am thinking perhaps that when the solenoid is actuated to release the vapors, that air is getting sucked in throught this vacuum line as well, causing a lean condition in the engine. The elbow was questionable whether it would or would not leak, and unfortunately the only way I know how to test this is cruising conditions on the interstate. It all adds up to a likely solution, however will have to wait till I travel home again to test it.

Have yet to do a fuel pressure check. 25 cent for a piece of fuel line seems alot better at the moment than 150 dollars in parts for the first solution, I am arranging the parts to await my arrival at home in the event this doesn't resolve the issue.

Thanks again for the response. Anyone have insite on this scenario?

 

[mike91]

Regardless of whether it's causing your problem or not, but you should change your vacuum line. Mine went on my truck around six months agoa and bugged the **** out of me. My truck would not run whatsoever and I thought I had a busted flywheel or something. Its a couple dollars to fix, but can feel sometimes as if it is a major problem.