Land Rover Repair: 97 land rover disco no start when hot, electronic cleaners, cylinder compression

Question
I am trying to figure out why this vehicle runs perfect until you shut it off starts good doesn't miss nothing.as soon as you shut it off when warm it will not start until the engine is cold I have replaced the fuel tem sensor didn't help. there is no fuel pressure when this happens.doesn't matter what outside temperature is always happens when engine is warm. it does appear to have spark still when this happens thank you.

Answer
Hi Scott,

There are usually several reasons why an engine has difficulty starting when hot.  It could be that your ignition timing is off.  Easy to check, if you have a scope.

Check to make sure your air filter is clean and that the MAF sensor area is also clean and tidy.  The MAF is a sensitive part (some say moody) that is very expensive to replace.  I've known owners to use electronic cleaners or brake cleaning fluid to clean around the MAF.  Make sure the MAF is fully dry before attempting to start your engine.

When was the last time your fuel injectors were cleaned?  Have them cleaned and tested to be sure there is no fouling taking place.

Lastly, have your cylinder compression tested.  This will reveal if there are more serious problems inside your engine.

Hope this helps,

JohnMc