Rating Summary. Robert 31 years of experience. Request Robert. BMW i L Most importantly, Robert is a very honest man whom you can count on I cannot begin to describe how great of a mechanic Robert is not only did he constantly keep me updated , was very straightforward , extremely professional and did absolutely excellent work we'll probably never use another mechanic other than him ever again I would recommend him to absolutely anybody.
William 34 years of experience. Request William. Cadillac STS V He came to the first appointment explained what was happening he was able fix and get me a quote for the issue I had and scheduled me quick for the other issue I had was able to explain with my certain items were not needed even though online portal stated was needed.
Only paid for the services required to fix the issue. He kept in contact with me to advise on the repair status and the final result. Nice to have the mechanic come to you.
Would recommend William very courteous. William was wonderful. Very knowledgeable and hardworking. Absolutely the best of the best mechanic. Matthew 33 years of experience. Request Matthew. Chevrolet Corvette V Matthew was awesome professional patient with my questions very knowledgeable and insightful I'm so grateful for his help and I will definitely request his services in the future I thank you!
Great Mechanic!!! Work was complete in a very timely manner. Much easier than having go through the gymnastics of having a dealership perform the work.
Torrieanto 12 years of experience. Request Torrieanto. Torreanto replaced all 6 injectors on my Town and Country for an extremely reasonable cost. He is a very competent mechanic with excellent experience. His troubleshooting and analytical skills were very apparent during our discussion of the work at hand. I really enjoyed talking with him on an engineer to engineer level. Fuel injectors pressurize fuel and pump it through either a fixed or electronically-controlled aperture, delivering the fuel as a fine, cone-shaped spray to the engine.
This mist is easier to ignite than a solid stream, burning more evenly and efficiently. Since it can take well over an hour to access and evaluate fuel injectors, injector maintenance is done by time and mileage intervals rather than from direct inspection.
We recommend cleaning fuel injectors at least every 36 months or 45, miles. Many engine parts can be replaced without noticeable improvement in performance, but when dirty injectors are cleaned there can be a distinct before-and-after difference! For real benefit, Techron must be used at least every 4, miles or so. Your injectors will still need to be properly cleaned eventually. Engine rpm drop may not be an effective diagnostic method when performing a cylinder balance test where an injector is disabled.
A more effective method is looking at the voltage changes from the O2 sensor. Leaking injectors and some dead injectors can be missed even when an injector is disabled. Other problems with the ignition system and mechanical components also may not show an rpm loss when an injector is turned off. If an injector is good, the voltage from the O2 sensor will drop to or below mV.
Another effective test is to measure the pressure loss in the fuel rail when each injector is fired and pulses for a set period of time. Use an electronic injector pulse tester for this. As each injector is energized, a fuel pressure gauge is observed to monitor the drop in fuel pressure. The electrical connectors to the other injectors are removed, isolating the injector being tested.
The difference between the maximum and minimum reading is the pressure drop. Ideally, each injector should drop the same amount when opened. A variation of 1. No pressure drop, or a very low pressure drop, is a sign the orifice or tip is restricted. A higher than normal pressure drop indicates a rich condition that could be caused by a stuck plunger or worn pintle.
A lean misfire may trigger a misfire code and turn on the check engine light. The code often will be a P random misfire code, or you may find one or more misfire codes for individual cylinders, depending on which injectors are most affected. Major symptoms of contaminated fuel can include cranking no-start, hard starting, stalling, loss of power and poor fuel economy. Because symptoms of fuel contamination generally appear immediately after refueling, the fuel gauge needle pegged on full should always be a diagnostic red flag.
Remember to ask if the vehicle has recently been refueled because some drivers just add fuel rather than topping off their tanks. If an owner has neglected maintenance services like oil changes and filter replacements, chances are the fuel injectors will suffer. For port fuel applications, not changing the oil can result in blowby and a compromised PCV system, which builds up contaminates on the tip of the injector.
Not changing the oil in an engine with direct fuel injection can result in a worn fuel pump camshaft lobe.
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