450D Pops

Posted by Andy Martin on July 06, 2004 at 14:49:27 from (12.74.222.77):

Bought a 450D for $800. Drove it home, but it pops out the exhaust.

When starting from cold, it does not pop but lots of blue smoke. As it warms up, the popping starts, a sharp crack, and the smoke quits. Loosening No 1 injector line stops the popping and does not affect the engine so it must be running on three. The previous owner says he replaced exhaust spring on No 1 by putting a rope in the cylinder to hold the valves up and not remove the head.

What are the possible problems? Is it probably a burnt valve but does not pop due to low compression until the temperature gets up?

Follow Ups:

• Re: 450D Pops captaink 08:16:43 07/07/04 (0)

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