You can use the injector cleaner, but I don't think that will solve the problem. There are a number of things that will cause hot start difficulty. Dirty injectors would usually give you problems all of the time, especially when cold as fuel tends to be less easily atomized at lower temps.

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Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.