Engine Overheating after 20-30 minutes. Why?

ANSWER : Hi there. One of the easiest ways to test a water pump is to carefully place your hand on the lower radiator hose while the motor is running. Two things should happen; first, as you suggested, the hose should feel "hard" and you should always feel motion through the hose. One other thing to check is your heater. If the heater is not working (supplying hot air), then you’ve got an obstruction inside the heater core; which can also create overheating problems. If you can’t resolve your issues soon, feel free to contact one of our professional mobile mechanics and have them complete a car is overheating inspection.

ANSWER : Anything is possible with enough engineering. The changes you are looking at would take major structural changes and would definitely not be an easy job. You could possibly consult a manufacturing engineer to get more details on how this could actually be carried out and whether it would be feasible.

ANSWER : Most likely, your car is experiencing excess fuel in the intake and cylinder. It may be in the form of liquid or vapor. A cold motor requires a richer fuel mixture to start and a warm motor requires less fuel. A hot motor with excess fuel is a flooded motor. There is a good way to test this theory. Simply floor the gas pedal and crank the motor. It will still be hard to start and will not run very well once it eventually starts, so you will need to feather the throttle until the fuel clears from the cylinders and normalizes. This procedure is what is known as clear flooding.

Some possible causes are a leaking fuel injector, fuel pressure regulator or just a rich running motor in general. At 16 miles per litre or approximately 59 mpg, that would seem to be a fairly efficient engine that is not using excess fuel. Unless of course, you typically achieve better fuel mileage. In which case, a scanner and some diagnostics will be required to figure out why. A rich running motor will get poor fuel mileage and will also cause your hot start condition.

I recommend the following inspection to help you out. Car is hard to start inspection

Good luck!

ANSWER : Hi There,
Depending on how severe the engine overheating before was, this may have resulted in a blown head gasket or a head gasket that may have partially caused a cylinder leak. When this happens, this can cause the compression in any given cylinder to drop as a result of the cylinder head gasket being damaged. As the gasket leaks and cylinder pressure (or compression) drops, this will result in a loss of power. A blown head gasket may cause a number of different symptoms. A head gasket that fails between cylinders will generally cause a misfire and potentially compression leaks from one cylinder into another. Low compression will eventually result in a rough idling engine. When the head gasket fails between a cylinder and the coolant port, coolant may leak into the cylinder causing it to be burnt with the fuel charge in the combustion chamber. This often results in misfires on startup, especially after the engine is run, turned off and restarted. I would suggest having a professional from YourMechanic come to your location to diagnose and inspect your vehicle to determine what the proper diagnosis may be.

ANSWER : Hi there. There are a lot of things that can cause this on your 2012 BMW M5. I usually start by scanning the computer for codes to see what comes up. If there are not codes then I load test the alternator and the battery to see if they are failing. Low voltage in the electrical system will cause this. If that is fine, then it is usually caused by a failing throttle body. I have seen a lot of these fail due to the motors in them hanging up. If the problem is only happening intermittently, this can make the issue hard to duplicate, but you can still have tests done on the car. If you are going to have this fixed, consider YourMechanic, as a certified mechanic can come to your home or office to test the vehicle and diagnose the Engine Malfunction Light.

ANSWER : Hi…thank you for your questions. If required in the application, a portable engine support bar is used to support an engine during mount replacement. The support bar has lifting capability as well so that the mount can be unloaded and removed. If a particular repair application requires a "crane" (complete engine removal for instance), such are portable these days in any event. With regard to the exhaust system repair, mechanics use ramps to gain access. Six ton portable jack stands will safely support a car two feet into the air which provides more than enough access to repair or replace any exhaust system component. If you desire replacement of the mounts, please refer to YourMechanic’s motor mount replacement service page. For exhaust leaks, please use the exhaust system inspection/repair page page. Once on each of those service pages, if you click on "Get a Quote" and enter your vehicle information (year, make, model) you can obtain cost info and schedule the service. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

ANSWER : Hello there, thank you for asking about your 1992 Isuzu Pickup. A professional will have the correct equipment to read OBD1 codes. Retrieving the diagnostic trouble code(s) is the first place to start when diagnosing your vehicle. Increasing RPMs changes engine load, which can in turn affect many different sensors and components, causing the Check Engine Light to illuminate. The only way to narrow down the options and find the culprit is through in person diagnosis with an OEM compatible scan tool. A certified technician from YourMechanic can retrieve the OBD codes at your home or office.

ANSWER : Hello there, you have a long series of issues going on with your 2013 Hyundai Sonata. If you keep getting a repeating oil light on than there is likely a fault in that system.

Since this fault has lasted after the engine was replaced it could be a oil pressure sensor, wiring harness fault, ECU fault, oil pump, oil strainer clogged, or low oil pressure.

To diagnose this issue properly you need a complete vehicle inspection to start from square one and identify the root cause of all this.