1999 Ford Expedition Repair Question
Mileage: 200,000 miles.
What causes a little backfire and low idle
Asked by watsonj8Answer
your mechanic may have bent valves with setting the timing wrong.
Roy
Should I do a compression check on engine or go ahead and get take the heads off and get the valves checked?
no, start with basics. a compression test is the right thing to do.
Roy
if you can watch these and tell me what you think I would appreciate it. I have had three so_called mechanics come and check it out. I have gotton further myself and I am not a mechanic. One of the three acutally works for ford. Let me know, thanks. is there an email so i can send a video? I dont think I can send it here
roybelding@comcast.net
Roy
i sent you links to youtube, for some reason i could not attach them to an email. just click the links and it will take you directly to it
I think you have problems. I am afraid that one or more of the valves is bent.
Roy
just pulled the head off and low and behold, you are right.....my concern is the piston head. has small nick in each one at the same location, no cracks. size is smaller than a eraser head, slight burr. Should I knock the burr down or smooth it out, or just leave it? Also, the cylinder location, the number one is at TDC, where could I find a side diagram of 2,3,4 cylinder locations when number one is at TDC? Just want to cover all my basis so I do not have to redo this again....