The car showed code Misfire in bank 3, when looking under the hood, the air intake hose was loose from the throttle body. When reconnected it was too late the car was smoking heavily with blue smoke and very strong gas smell filled the air. The mechanic diagnosed it as fuel hydra locked. All 8 coil packs and spark plugs were replaced, and the right side "high pressure fuel pump" as well. The mechanic now is replacing the fuel injector on bank 3 because it is still running bad and smoking. My question is would the loose air intake cause all this and is the engine dead and all this repair work for nothing? It's my son's car and he bought it 2 months ago against my words of "don't get this car". We have just learned it has 2 regular fuel pumps and 3 high pressure fuel pumps.
Well the loose air intake shouldn't have caused all that but here's the problem if the vehicle really was hydrolocked with liquid inside the cylinder. It's wiped out your engine now because that will bend the piston rods and the vehicle will never run right again without rebuilding the engine. So I would tell you to have the engine pressure tested, remove the spark plugs and have all cylinders tested to see if indeed the engine's damaged internally
Thank you for that suggestion! Th engine has been pressure tested, and we are told it is fine, however white-ish smoke still comes out of the tail pipe and turns sky blue when the RPMs are raised above 2K. The smoke smells like gunpowder to me and inside the tailpipe is very wet and black. The fuel injectors on the rpassenger side were replaced along with both high-pressure fuel pumps. The mechanic says it has to be driven to clear the exhaust, but the amount of smoke coming out is massive and especially on the right (passenger) side exhaust. It is dual exhaust, but some smoke does come out the driver side pipe as well.