Compression that is zero or headed that way ususally means a cylnder head problem unless a few pistons have surrendered due to severe, chronic pre-ignition. The piston issue is generally obvious due to the rattling before the give up.
Ten minutes straight on a 6% grade with iffy gasoline and possibly an inoperative EGR system could do it. The question is: was it rattling while climbing?
The main thing is to determine why no compression in a couple of cylinders. A broken belt and stationary cam could explain it. One would hope the mechanic sorted this out.
Has he not considered a broken timing belt?
Generally speaking, when a timing belt breaks the starter motor will crank the engine over much faster than normal.
Thanks for the update and good on you for the simple to fix outcome. What a coincidence. Just yesterday had a car–Chrysler PT Cruiser–towed in that died while driving. No start, fault code for no cam sensor signal. Of course there was no cam signal, the cam wasn’t turning, stripped timing belt.
Just wondering, how long did it take your mechanic to come to such a simple conclusion?
this post has actually been my father in laws experience and the Ford Ranger is his vehicle, i am just the internet savvy secretary, my father in law was the one to do the work, he had a feeling the mechanic was going to take him to lunch, haha. i think the mechanic knew what it was but was trying to take advantage of him. somy father in law towed it home and then he repaired it about a week ago, he had enough confidence to go through with the repair because of you guys’ input. thanks again asemaster
Interesting. I had the same experience once. Timing sprocket went on my Riviera. Mechanic said engine was shot but wanted to buy it for $500 since he had an engine. Had it towed the 50 miles home and put $125 worth of sprockets and timing chain on and it was good as new.