Snap-on’s New Software Bundle 9.4 Provides Easy Diagnosis of Ford Misfires
Snap-on’s Software Bundle 9.4 also includes 45,000 new enhancements to codes, data and tests, plus new and expanded Troubleshooter tips that go back to 1981.
Tech Tip: Multiple Cylinder Misfire or Rough Idle on Chrysler Models
This bulletin involves rotating all engine exhaust valves, replacing the valve spring retainer locks with a new design to increase valve rotation at lower rpm, inspecting/replacing the MAP sensor (as necessary), and decarbonizing the combustion
Porsche Engine Diagnostics: Misfire Codes, Fuel Trim Faults, Secondary Air Injection
Porsche has been building engines for decades that will literally fit in a suitcase, but are still able to put out horsepower that rivals many larger engines. Find out how to keep the Porsche Boxster engine running smoothly.
COP Connection: Investigating Common Coil-on Plug Misfires
For a number of reasons, the trend of modern engine management technology is leaning toward using coil-on-plug (COP) ignition systems. One reason is that COP ignitions are very compact and are very adaptable to individual cylinder tuning. With the exception of a few designs that incorporate a driver or “module” into the COP assembly itself,
Tech Tip: Misfires May Cause Engine to Feel Rough, Lack Power and Use More Gas
When you have a misfire code for a particular cylinder, you can focus on one of three things: an ignition problem, a fuel injector problem or a compression problem. Ignition problems that can cause misfires include worn or fouled spark plugs, bad plug wires, moisture on the plugs or plug wires, or a weak or dead ignition coil ….
Tech Tip: Weak Fuel Pump Can Cause Engine to Misfire
For a fuel-injected engine to run properly, the fuel pump must be capable of generating pressure that meets the system’s operating requirements. Close enough is not good enough. The pressure delivered by the pump must meet specifications because that’s the way the engine is calibrated to run. If fuel pressure is even a couple pounds less than the specifications, it can ….
Tech Tip: Multiple Cylinder Misfire on Cherokee, Grand Cherokee and Wrangler Vehicles
The customer may experience an incident of engine misfire during certain vehicle operating conditions. The misfire may occur when the vehicle is operated between 50-70 mph and under light loading conditions, e.g. slight uphill road grades. This condition may occur at all ambient conditions, but is more noticeable when ambient conditions are less than 0° C (32° F).
Tech Tip: Jeep Cherokee and Wrangler Multiple Cylinder Misfire
The customer may experience an incident of engine misfire during certain vehicle operating conditions. The misfire may occur when the vehicle is operated between 50-70 mph and under light loading conditions, e.g. slight uphill road grades. This condition may occur at all ambient conditions, but is more noticeable when ambient conditions are less than 0° C (32° F).
Tech Tip: Jeep Multiple Cylinder Misfire
The customer may experience an incident of engine misfire during certain vehicle operating conditions. The misfire may occur when the vehicle is operated between 50-70 mph and under light loading conditions, e.g. slight uphill road grades. This condition may occur at all ambient conditions, but is more noticeable when ambient conditions are less than 0° C (32° F).
Nissan Tech Tip: Diagnosing an Altima Engine Misfire
The engine runs rough, gas mileage is down and more importantly the "check engine" light is on. That little illuminated check engine light strikes fear in the hearts and minds of the average vehicle owner – it’s supposed to. Otherwise, people would keep driving their vehicles as long as they could, eclipsing the light with a piece of electrical tape.