Will not start when Hot????

After a radiator refill start and run engine till hot then top up . If it still overheats it may have a compression leak or a cracked head . after the engine is hot ,fit a pressure gage to the radiator run engine under load and if pressure rises quickly it has leak or crack .

Well it could be an engine problem, or a bad connection with one of the battery cables. The engine would require more voltage to crank when it is hot, but not that much.
You might want to have someone check the engine to see how much drag is has when hot, by turning the crank by hand.

Its a hot start issue.

Can be related to low fuel pressure or problem with crank sensor.

Also it can be weak battery or starter.

But possibilities are to be inspected to confirm what exactly it is.------

To troubleshoot and confirm the issue,i suggest you refer few solved help links with similar types of problem like yours:------

Click the link below:------

1991 Toyota Trecel: Engine Starts fine but dies when gets Warm?

http://whatisbyme.blogspot.in/2012/05/1991-toyota-trecel-engine-starts-fine.html

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1994 Toyota Pickup: Starts fine but dies in few seconds?

http://howtobyme.blogspot.in/2012/05/1994-toyota-pickup-starts-fine-but-dies.html

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1995 Lexus LS400: Running Hot?

http://whatisbyme.blogspot.in/2012/05/1995-lexus-ls400-running-hot.html

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2002 Toyota Camry: Puff of Blue or White Smoke while Starting?

http://whatisbyme.blogspot.in/2012/05/2002-toyota-camry-puff-of-blue-or-white.html

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Multiple problems on car: Car runs hot, A/C blows hot and car starts surging?

http://schematicsdiagram.blogspot.in/2012/04/multiple-problems-on-car-car-runs-hotac.html

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Delay starting on Toyota Prius?

http://schematicsdiagram.blogspot.in/2012/02/delay-starting-on-toyota-prius.html

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Honda car will not start intermittently?

http://technoanswers.blogspot.in/2012/02/honda-car-will-not-start-intermittently.html

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Vehicle Starts, Runs and Loses Power

http://whoisbyme.blogspot.in/2012/07/vehicle-startsruns-and-loses-power.html

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Intermittent starting issues on Volvo 760?

http://schematicsdiagram.blogspot.in/2012/02/intermittent-starting-issues-on-volvo.html

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Car starts and cuts off immediately?

http://repairhelpcenter.blogspot.com/2012/01/car-starts-and-cuts-off-immediately.html

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Car won't start when cold?

http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-when-cold.html

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These details will help.

Thanks.

There is a valve that stops hot coolant from entering the heater box. It is probably stuck open. murf427

there is an enrichment or choke to provide a richer fuel mixture for starting. there is something wrong with that function in your car. you need to take it to someone with a real diagnostic tool, such as a dealer, to tell you what is wrong and fix it.

he may need to replace the ignition coil... when its hot it gets faulty its more likely to give a bad run then you have to wait for it to get cold to have a good run

Before faulting the linkage, contact your mazda dealer or repair shop to see if this is a computer managed hvac system which may be operating in a default position. They can walk you through the diagnostic trouble codes if it is, to verify the issue.

bad oring on the reverse gear

your head gaskets are bad.... This is a common plroblem wiht those symptoms.

hello, if the car starts to overheat it can be the waterpump if it goes hot that quick. im not sure if the waterpump is where the timing belt of external driven off of the drivebelts but make sure all the drivebelts are on and check for any leak in the system.