Hot start problem, what to do?

If you are having problems with warm start, there is something wrong with engine or fuel. In this article, we'll explain to you what might be the reasons why the engine won't start and give you some solutions to check before heading to the garage.

🚗 Fuel problem?

There are several fuel related causes that can cause hot start problems:

• Your fuel gauge may be defective! It announces to you a higher level than it really is. First reflex: check the corresponding fuse. For more DIY enthusiasts, you can try checking if the float located in your tank is working. For others, go to the garage to do this check.
• Your TDC sensor, also called a crankshaft sensor or camshaft sensor, may be damaged. If they fail, they can cause the wrong amount of fuel to be delivered using electronic injection. Here it is a mandatory passage through the garage space.
• Your fuel pump is no longer working properly. To find out if this is your pump, in which case we advise you to contact your mechanic as soon as possible.

?? Does this affect the ignition system of my engine?

On gasoline models, there may be a problem with one of the spark plugs. This often happens with older cars, but most recent ones are not immune to this problem!

Diesel models are not affected as they have glow plugs and in theory they have no problem starting. We will give you all the tips to fix the causes of your ignition problem.

🔧 What if my spark plug wires are damaged?

• Open the hood and locate the spark plug wires (large, rather thin black wires) between the cylinder head and the ignition coil;
• Check all spark plug wires: cracks or burns could interfere with the insulation and / or the flow of electrical current and therefore ignite the spark plug;
• Check for corrosion at the ends of the connections. Clean with a wire brush if necessary.

🇧🇷 What if the spark plugs are dirty?

• Disconnect the wires from the spark plugs;
• Clean them with a wire brush and degreaser if they are very dirty;
• Plug in again, then start the engine.

⚙️ What if one of my spark plugs is defective?

• Inspect them one by one to make sure one is dirty, oily or completely worn out;
• Replace defective spark plug.

Are you planning ahead and have spare spark plugs in your glove box? Well done! Otherwise, you will need repairs.

Regardless of whether you have spare parts, we recommend replacing all spark plugs.

The hot start problem can also be caused by your air filter clogged, which interferes with the proper combustion of fuel from your engine... If so, call one of the our trusted mechanics will replace it.