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Hard time starting when warm/hot.

Have a Honda Stepwagon 2001 on a Y (RF3). Usually start kind of Ok from cold, but when it has been run and hot/warm, has a hard time starting, and usually starts on the 3rd attempt. Mechanics stumped.

Posted by rs005b3719 on


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This can be due to the Lean condition of the fuel ratio. The heat sensors need to cool down to put the engine into a "cold start routine". If the heat sensors are not cooling, then it will be hard to start.

Poor grade of fuel. Each grade of fuel has an ignition point. With the engine in Lean mode, the flash ratio prevents easy starting. You could also have a bleed down of fuel or a malfunction in the Evaporative emission system. This is now requiring your car to repressurize the system due to a bad solenoid or a faulty emissions line.

I hope my solution is helpful..

Posted on Jun 08, 2012


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SOURCE: 454 ci gm turns over hard backfires timing ok acts flooded

Check fuel pressure, and regulator. A leaking regulator gives a warm engine more fuel [ it does not like it] a cold motor does. same as a flooded motor. Good luck

Posted on Mar 24, 2009



  • 33 Answers

SOURCE: hard to start hot or cold runs good when it starts

I think it may be time to change the spark plugs and wires.

Posted on May 18, 2009


  • 2 Answers

SOURCE: Hard to start when the engine is hot

Sounds like electronic ignition problems, I had a truck and it started doing that and then it would not start at all hot. You would have to wait for it to cool completely, then it would start right up. Ignition module problem is what it sounds like.

Posted on Jun 13, 2009


  • 208 Answers

SOURCE: Problem with air conditioning on 2001 mitsubishi mirage.

the air conditioning system has most likely drawn moisture this is not good take it to have the system recovered and a new restrictor valve put in. leak checked and recharged

Posted on Jun 22, 2009

Bruce Hathcock

  • 3600 Answers

SOURCE: hard start when hot 98 ford windstar with 3.8

Try replacing the fuel filter also Has it had a tune up? they need to have the plugs replaced at 100,000 if the fuel filter does not work then the most probable cause is the fuel pump is losing pressure when hot. The pump warms up and the check valve fails to close all the way allowing a now fuel or fuel starvation.

Posted on Sep 27, 2009

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