How do I check my injector balance?
When viewing the rates, a cylinder with (+) means that its injector is using more fuel than the average fuel rate and a (-) translates to less fuel. GM states that balance rates should be no more than plus or minus 4 (+4/-4) in park at operating temperature.
What is an injector balance test?
The fuel injector balance test is a procedure that measures the amount of fuel delivered by each injector. This measurement can be done directly or indirectly depending on the method used.
How to check cylinder balance in GM 4.8L?
The cylinder balance test should be done by unplugging the electrical connector of the fuel injector or the COP Coil. Remove and Inspect: . Cracks. Engine oil (from a leaking valve cover gasket). Fuel fouling. Center electrode capped/blocked with carbon. Check for carbon tracks on the ceramic insulator.
Where are the fuel injectors located in a GM engine?
In the 4.8L, 5.3L, 6.0L engines, GM has done away with this type of fuel system and uses 8 seperate fuel injectors placed on a fuel rail on the outside of the plenum. These fuel injectors can get dirty (internally) and/or clogged. When this happens, the fuel injectors will spray fuel in a jet instead of a fine atomized mist and/or no fuel at all.
Are there any Chevy 6 0 fuel injectors?
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What happens when a fuel injector is clogged?
Most of the time though, clogged fuel injectors create a rough idle and lack of power condition due to the lean Air/Fuel Mixtures they create in the cylinders. Here are some of the tests you’ll need to do: Fuel Injector Tests. Confirm that the fuel injector is being activated or not with a Noid Light.
What happens when fuel injectors go bad in Chevy Silverado?
There are two main ways that your injectors can go bad. The first is for them to become clogged, dirty, or unresponsive. When this happens not enough fuel enters into your Silverado’s combustion chamber. The other way is if the injectors are leaking. When they leak, they can really do some damage.
What is the code on the Duramax fuel injector?
Low and behold, the P1249 had returned as it had numerous times before. But the only code displayed was a P0205, which indicated a circuit fault on #5 fuel injector. Working quickly before the cylinder heads warmed up, we removed the FICM connectors and repeated the pin test.
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Why did my GMC injectors have to be replaced?
A red flag went up in the owner’s mind because the GMC had been bought from a private owner who claimed that all eight injectors had been replaced prior to the sale. The current owner called a mutual friend of ours who works as a heavy-duty mechanic for a local construction company.