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XJ XJ8 / XJR ( X308 ) 1997 - 2003

Save an x308 from the Wreckers, won't run.

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Old May 3, 2015 | 06:48 PM
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Default Save an x308 from the Wreckers, won't run.
I just bought a x308 and it won't run.

Throws up limp home mode and won't keep running.

Backfires out the intake manifold.

Any suggestion on where to start?
 
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Old May 3, 2015 | 07:27 PM
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Originally Posted by ultraforce
I just bought a x308 and it won't run.

Throws up limp home mode and won't keep running.

Backfires out the intake manifold.

Any suggestion on where to start?
It sounds like a timing issue.
 
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Old May 3, 2015 | 07:28 PM
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Originally Posted by cybercg
It sounds like a timing issue.
I would guess there are 2 sensors for timing and both must be bad?
 
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Old May 3, 2015 | 08:09 PM
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Did you remove the cam covers to check the timing chains????????????

bob gauff
 
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Old May 3, 2015 | 08:24 PM
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Originally Posted by motorcarman
Did you remove the cam covers to check the timing chains????????????

bob gauff
No, but it has had a new timing chain and tensioners.
 
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Old May 4, 2015 | 03:00 AM
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Did they use the locking tool for setting the timing as a crankshaft holding tool?


It is known for the timing plate to distort and throw out the timing when this is done!
 
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Old May 4, 2015 | 03:04 AM
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Originally Posted by andrew lowe
Did they use the locking tool for setting the timing as a crankshaft holding tool?


It is known for the timing plate to distort and throw out the timing when this is done!

Chain was not done recently.

Did not hear any chain slapping.

I will check the chain but it could be electronic?

Does the chain issue cause a backfire in the Inlet manifold?
 
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Old May 4, 2015 | 10:56 AM
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Sounds like a timing problem, which will cause backfiring -- plug fires when one or more intake valves are open.

Sure sounds like a jumped timing chain.
 
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Old May 4, 2015 | 01:06 PM
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1. Check cam timing
2. check compression
3. report back findings
 
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