Ford F-250 Repair Question
Now this morning, after heavy rains last night, I jumped in my truck and started it up. It ran very rough at idle and at speed. I did not see any black smoke. It continues to run rough even after being driven for 20+ miles.
I noticed two small signs. I have no idea if they are apart of the problem or not. First, upon acceleration, I can hear (barely) a high pitches squeal - maybe a vacumn leak. Secondly, after I turned the truck off and got out, I could smell a slight sulpher odor.
I would appreciate your help.
Could very well have a vacuum leak, check the PCV line at the throttle bore, and all other vacuum lines. The sulfur odor is most likely the cat converter not being happy with the mixture that it is getting because the PCM is trying to compensate for the misfire. Have your frien scan it, light or not it should have something stored if it runs that poorly.
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