LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

timing marks

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Old 06-19-11, 07:57 PM
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jlegan
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so I replaced the timing belt and water pump, plugs, wires, caps and rotors, got it all back together and it has bad spark knock, no power at all will barely even move and on top of that it is leaking coolent from the back of engine somewhere. looks like it leaking between where the block and trans go together. timing marks appear to be correct, wires are correct engine runs smooth until you give it gas please help.....
Old 06-20-11, 06:18 PM
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jlegan
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bump......
Old 06-20-11, 06:24 PM
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tenchu
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Did it run fine BEFORE you changed the tbelt?
Old 06-20-11, 07:35 PM
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randal
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Go over all electrical connections and make sure you re-connected everything...wires, vacuum lines, etc.

As far as the leak, it could be coolant from a front hose which is wicking around the block and appearing to exit at the rear of the engine. Water can sometimes run in unusual channels. Look carefully. If not, it could be the coolant line running under the intake manifold. Perhaps it was disturbed and the rear O-ring is leaking?
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