Cranks over, but it will not start

AL514

MECHANIC
2003 FORD ESCAPE
V6
4WD
AUTOMATIC
130,000 MILES

Hi all, I have no compression anywhere on this thing, its cranking over like the chains are broken (2) DOHC. I pulled off a cover and the chains are intact, but the are loose, I can move them they have a bit of slack, but why have I lost compression everywhere? (Inference motor?) And why do I keep getting stuck with these timing jobs? The book calls for 9-12 hours for these chains. Thanks, Al

5 Replies

SATURNTECH9

MECHANIC
30,869 POSTS

If you have enough slack in the chain the timing can jump bend valves etc. And loose compression. Have you checked the actual compression yet? It sounds like from what you have described the chain could have jumped.

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Wednesday, August 12th, 2020 AT 1:35 PM

AL514

MECHANIC
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Yes I have done a compression test, the meter did not move but 1 or 2 psi. The motor spins so fast. Will one chain jumping cause the other cam chain to do the same? I am sure valves are bent. I am afraid to take off a head.

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Wednesday, August 12th, 2020 AT 1:35 PM

SATURNTECH9

MECHANIC
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If lost compression on both banks then they both jumped that does happen one or both can jump.

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Wednesday, August 12th, 2020 AT 1:35 PM

AL514

MECHANIC
4,692 POSTS

Do you know if this is an inference engine?

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Wednesday, August 12th, 2020 AT 1:35 PM

SATURNTECH9

MECHANIC
30,869 POSTS

http://www.aa1car.com/library/mazda_ford_timing_chain_replace.htm I still haven't found out if it is interference but iam pretty sure it is.I posted the timing chain replacement.In mentioned it's not for the novice.