Mechanics

MERCEDES 420 NOT STARTING

1998 Mercedes Benz S420

I have a 1997 420 that I replaced the engine my self the old one had almost 300,000 and was noise other than that it ran ok so I bought a used low milage one and swaped it out I put all the injecters and sensors from the old engion on the new one and the problem I am now having is it will start but only will run for 4 or 5 sec and will die I checked the fuel pressher and it was on the low side so put in a new fuel pump still not running I rechecked all the wirering all seames to be good Im need help
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David roe
January 12, 2011.



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