Question about 1999 Land Rover Discovery

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Why did my airfilter box explode? A Landrover Disco.

The car was converted to run on LPG, and this problem has occured since doing this.

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LPG backfires can be caused by electrical issues, so first thing to do is check the plugs & leads. I'm also told that it can be more prevalent depending upon whether it's a single point or multi point conversion.

Posted on Feb 25, 2010

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Hi,
If an inlet valve stuck or has a crack - it may ignite the rest of the gas/air mix - causng a backfire into the airbox.

This may be temporary or a permanent- recurring problem. Only by taking the head off can you check valve conditions and that all springs and guides are good.

This is the most likely cause - pre-ignition from a slow to close valve.

Posted on Feb 04, 2009

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