My 2001 Ford Explorer jumped time, I just put in a different used engine in last night, I drove it for about 3 hours last night it drove good. This morning I went to crank it up and it jumped time again. What happened and why did this happen again with a different engine?

knocking sound like main bearing noise.2003 -2004 is three or four year difference.taking a chance .you could get the same engine if the timing is the same .valve timing and injection timing.ignition wire hook up same and same tranny .but you going to have pcm problems.you going to have cranking problems. knocking sound like main bearing noise.2003 -2004 is three or four year difference.taking a chance .you could get the same engine if the timing is the same .valve timing and injection timing.ignition wire hook up same and same tranny .but you going to have pcm problems.you going to have cranking problems.

yep long as every thing the same.you probably going to have it reprogram .i knew a few guys swap engines and had cranking problems.they had to reprogram it.when you get it hook up let me know how it goes you might luck up and it cranks. yep long as every thing the same.you probably going to have it reprogram .i knew a few guys swap engines and had cranking problems.they had to reprogram it.when you get it hook up let me know how it goes you might luck up and it cranks.