Cadillac Repair: 1994 sls caddy northstar vin y, fuel pressure regulator, coolant level

Question
white smoke from tail pipe also raw fuel
computer been changed injecters been replaced
it doesn't run hot their is a miss at idle
when injecters was replaced it stop smoking for
a day but when i fueled the car it started again
plaese help

Answer
Hi Eddie, First thing I would do is run the engine and smell the exhaust. If it smells sweet and the coolant level is low then you might have a cracked head or bad head gasket. With the engine cold after sitting overnight I would remove all the sparkplugs and try to determine which cylinder has coolant in it. Then you will know where to look after disassembleing the engine. As for the fuel if the injectors aren't leaking then you might have a bad fuel pressure regulator that is allowing gas to be sucked into the engine by the vacuum hose. Also make sure there aren't any external leaks that you can see. Sounds like this could get expensive to fix. Good luck, Bill