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245 DL dead in a giant puff of white smoke on the Houston Beltway! 200 1986

posted by  chris herbst on  Tue Feb 18 02:27 CST 2003
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last visit: Mon Oct 20 20:32 CST 2014
[RELATED]

Theoretically it shouldn't, because the hall effect sensor would spin down when the belt stopped turning the intermediate shaft.

Unless somehow the injectors got stuck open and were just dumping raw fuel into the engine. It could happen, but I'd be surprised if it happened to several at the same time (unless it was an electrical problem). Did you check the fuel pressure regulator hose to see if the diaphragm broke inside of the regulator?

The white smoke was probably gasoline since you said it's raw gas dumping out the pipe. Maybe the spark stopped when you let off the gas--for whatever reason--and the injectors kept sending raw fuel into the hot combustion chambers until the engine speed slowed down enough for you to know that it was dying. That would explain the huge cloud of smoke, as the hot catalytic converter would ignite some of that fuel. You might want to investigate a no-spark problem. Still, check the timing and whether the timing belt is intact.
--
chris herbst, near chicago






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