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On a 1997 ford explorer 4x4 4ol v6 SOHC why would starting fluid spray blow out of the air intake instead of sucking it in?

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2006-06-14 14:00:18
2006-06-14 14:00:18

It sounds like you've got timing chains that have jumped. The job of the timing chains are to keep the intake and exaust valves opening and closing in proper time with the up and down motion of the pistons. If the chains have jumped, and are no longer in rythem with the pistons, the intake valves could be opening when the pistons are on the way up, instead of on the way down, thus exausting out of the intake manifold, instead of drawing air in through the intake manifold. If this is what has happened, and I strongly feel that it has, then you probably have damage to the valves in the engine as well. If the valves are opening at the wrong time, the pistons will usually collide with the valves, that should not be open, but are, thus causing bent valves, and possibly piston damage.

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