Not starting backfire intake

1995 LEXUS LS 400
180,000 MILES
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SAEED.ALMEQ
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Engine cranking clockwise and backfire from intake ,engine while cranking is trying to rotate counter clockwise ?
Timing belt replaced
Spark plugs and wires ok + there order
Jul 24, 2012 at 11:25 PM
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ASEMASTER6371
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sounds like a timing control failure. could be failed timing belt.

Roy
Jul 25, 2012 at 12:17 AM
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SAEED.ALMEQ
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checked timing belt twice its on the notch?
Jul 25, 2012 at 8:09 AM
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ASEMASTER6371
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start with a compression test and fuel pressure test. get back to us with the results

Roy
Jul 25, 2012 at 11:38 AM
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SAEED.ALMEQ
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checked compression all is above 170psi
Jul 27, 2012 at 7:41 PM
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ASEMASTER6371
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ok, fuel pressure??

Roy
Jul 27, 2012 at 9:28 PM
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SAEED.ALMEQ
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Yes fuel pressure is 50+ psi
Injectors firing
Crank +cam sensors checked
No check engine light ,no codes
Forget to mention that cylinder no1 has no compression at all

Jul 27, 2012 at 9:51 PM
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ASEMASTER6371
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bingo, i bet you have a timing belt issue . if not, then you may have a burned valve.
Roy
Jul 28, 2012 at 7:51 PM
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SAEED.ALMEQ
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hi roy
i rotate the crank several times and check timing marks there ok
but im thinking that timing belt is for a 99 ls400
Jul 28, 2012 at 9:02 PM
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SAEED.ALMEQ
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and what i should do with the cylinder that dont have comperession ?
Jul 28, 2012 at 9:04 PM
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ASEMASTER6371
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inject air into the cylinder to find out where the leakage is coming from. then you will have to remove the head and perform the needed repairs.

Roy
Jul 29, 2012 at 2:16 PM
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