So I did a bunch of work on my '08 BMW 550i with the N62tu engine recently including sending the injectors off to be rebuilt and cleaned being that they were original with about 235K miles on them. Everything went back together well, but now I'm having an intermittent long crank issue; when this happens, it'll briefly puff some black smoke and sniffing the intake manifold through the throttle body smells strongly of fuel. Checked fuel pressure: pressure drops from 50 psi to 20 psi over 1 hour with vehicle sitting. Fuel trims don't reveal anything super obvious while driving. Haven't pulled plugs or fuel rail yet, but figured pulling the rail from the manifold will show if an injector is leaking down slowly and flooding the cylinder.
My question is if anyone has ever experienced leaking injectors following a rebuild service?
Hindsight being 20/20, I should have just left them alone considering I was not having any injector related issues prior to the work
My question is if anyone has ever experienced leaking injectors following a rebuild service?
Hindsight being 20/20, I should have just left them alone considering I was not having any injector related issues prior to the work