What causes injector leak back?

Another common fault by contamination or wear and tear over time is that the pilot valve within the common rail injector gets worn which causes your injector to back-leak which causes your vehicle to stall, run rough, have lack of power and eventually not run.

What does it mean when your fuel injector is leaking?

Leaking fuel injectors can cause Oil Thinning At engine shutdown the fuel pressure should maintain operating pressure or just below that for a substantial period of time. Fuel injector pintle, ball or disc seat leaks as well as the bottom O-ring leak on a side feed injector will cause fuel to escape into the intake manifold.

Can a vacuum leak cause engine surging when accelerating?

Vacuum leaks most commonly occurs in the hoses, which is most prone to wear and tear due to the under-hood heat from the engine. Vacuum leaks can cause car surging when accelerating on engines with either a Mass Air Flow system (MAF) or Manifold Air Pressure (MAP) system.

Can a clogged fuel injector be repaired quickly?

Clogged injectors can usually be repaired, if you catch the problem quickly. Sometimes a fuel injector is completely clogged, because of years of neglect or a lack of regular engine servicing. If this is the case then a refurbished replacement, may be the only option.

Can a vacuum leak cause fuel injection to stall?

Once the ECM detects a lack of flame, it backs off fuel injection, runs lean and must repeat the surge/stall cycle over and over again just to keep running. Vacuum leaks can cause surging on some engines, but it depends on the type of fuel injection system.

What causes a gasoline injector to start surging?

Fuel injectors contain very fine mesh filters, which can just as easily clog and cause the same sort of surging. After spending some time in storage, gasoline will begin to react with the oxygen around it and lose its potency.