Q: Hard starting - 2010 Chevrolet Silverado

asked by on

engine cranks but takes a few seconds to start ,sometimes 2-3 cranks , it sounds like it does not want to start, mechanic put it on computer and could not find anything wrong -it did this before and they had to reset the fuel values because of too much ethanol in system , it is flex fuel but we only have 87 octane in this area thankyou

My car has 48000 miles.
My car has an automatic transmission.

As you may know, ethanol attracts and bonds with water from the air, and that water can separate out inside the tank due to phase separation.

If your vehicle sits for long periods between use, the moisture settles to the bottom of the tank and can potentially clog in-tank pumps and filters. Damage is also possible in fuel lines, injectors, seals, gaskets, and valve seats as well as carburetors on older engines.

This may be caused from too much condensation your fuel tank as well. I would recommend running some fuel stabilizer through the tank and if the truck is prone to sitting for periods of time such as a week or so at a time, you may want to regularly use this depending on your area. If you happen to live in a cold moist environment, this may help. A certified technician from YourMechanic can come to your car’s location to diagnose the hard start and pinpoint the repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Hard starting - 2010 Chevrolet Silverado

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I drove van shut it off for less than a minute tried to turn on and it wont. The headlights come on though

Hello. A vehicle that will not start can be caused by many things. If the engine does not even crank, it may be possible that the battery is low, or that there is an issue with the starter. If the...

Q: My car is overheating

Overheating can be created by many things: The anti-freeze condition poor Low coolant level because of a leak Coolant pump flow output low Engine internal failure The radiator externally blocked from airflow to cool the anti-freeze. Internal...

Q: Car won't start battery is good been tested, all light's work. 2004 Honda Accord

Hey there. If codes were set, these codes provide the starting point for the diagnosis and repair. If the battery on your car is putting out at least 12 volts or so (technically it should be 12.6 fully charged) and...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...