What happens if you over tighten injectors?
If they are over-tightened, there is a danger that threads will be stripped, or the bolts/studs sheared. If we overtighten a the injector, we may strip the threads from the nuts or bolts. We may also cause studs or bolts to overstretch and eventually snap, or damage the injector.
How tight should fuel injectors be?
The slip fit on the injector should be snug when the rubber seal is in good shape. There isn’t usually any slop. You are supposed to push them straight in or pull them out so the seal doesn’t get damaged.
What causes diesel injectors to leak?
So, the most common cause of leaky injectors is; the failure of the O-ring, where the injector meets the fuel rail. The O-ring can become, hard and brittle, from the heat of the engine. If it breaks, then fuel can leak out, over the engine. The other way an injector will leak is if, the injector body or nozzle cracks.
What happens when you run out of fuel injectors?
The excess fuel, called spill fuel or return fuel, cools the injectors and is returned to the fuel tank to diffuse the heat. Air bubbles introduced into the supply lines by a fuel filter change or by running out of fuel will prevent the engine from starting and running normally. The air must be bled out until the system is purged.
What causes wear and tear on fuel injectors?
Driving a car hard, combined with short start stop journeys, will increase the wear and tear on injectors. Letting the engine cool down, before shutting it off, will increase the lifespan of the injectors. This will also, benefit the rest of the engine too.
Where does the fuel go in a diesel injector?
Diesel injector fuel lines carry fuel from the lift pump and deliver it to the injector supply lines or the fuel gallery. As the fuel travels through the injectors, small amounts of fuel are injected into the combustion chamber. The excess fuel, called spill fuel or return fuel,…
How can I keep my fuel injector in good health?
Another great way to keep injectors in good health is; to regularly add a fuel injector cleaner to to your fuel tank. Many manufacturers claim that these cleaners, will give your car extra power or increased mpg. They probably won’t, or make much difference, to a car that is running properly.