Last year I was having a hot start issue,if I drove the car for 15 min. or more it would have a hard time starting. I changed the starter with a new one,have not had an issue since, barely turn the key and it fires right up. Hot or Cold.91 All stock sc thunderbird.
When you turn the key to the `Start' position (IE turning over) the engine spins over the same Cold or Hot, there's no difference, and it does it with out any strain (sounds the same as before this issue arised, and like my '89 XR7, ect) I guess i truely can't rule it out as a possibility thou, and now if the guy i gave my spare too still has it.......
i to had hot start problems last year, it lasted for about 3 months then my head gasket blew out. food for thought. once hot if the gasket has a slight leak it could be letting some coolant into the chamber when hot due to pressure in the cooling system then making it hard to start.
Well i've only driving this car during the summer months (@ 6 months total in the last two previous years, didn't drive it this summer except for 2 days) and it's being doing it the whole time, and i didn't noticed any change in coolant level or change in oil color or level.
Please describe your hot start condition clearly. For example, it cranks over fast for 30 seconds before it starts. It cranks over real slow and sounds like its binding. It spits and sputters after it starts when hot...
Leaking injectors will cause a long crank and usually misfires after startup due to puddled fuel in the cylinder. It's easy to check for leaky injectors. Pull the fuel rail with the injectors still attached cycle the key a couple times to build pressure. Place paper towels under the injectors and watch for drips. Or you can use a pressure guage to see if the injectors or fuel pump is leaking.
Well if you like to search for `hot start issue' under my alias, you'll find least TWO threads started by me on this issue and will really cover all grounds as to what is wrong. But to forgo that......
first thing in the morning i get into the car, it starts nearly instantly (depending where the vane is on the cam sensor) usually 2 full revolutions at the most. And it runs great, i can drive it too work like @ 28 blocks or 1 mile away, shut it off, come out afterwork and it'll crank over (turn over/key in the `start' position) just like in the morning
After maybe 5-8 or so seconds of cranking it over (key in the start position) if i'm lucky it'll have a hint of struggle firing and will catch and rev up to the typical Start RPM (13000rpm) and settle back down to @800rpm after like 15-20 seconds? but when it catches it does puff out abit of smoke (usually a sweetish unburnt fuel burnt oil smell )
BUT if i'm unlucky, after 5+ seconds of cranking it has in the past `caught' but would idle at around 400-500rpms, and would stay there, you can walk off come back @ 5 or so minutes later, it'll still be idling there, and as you can guess, yes it idles like ~~~ at that RPM. but there is usually a small amount of smoke that starts to come out the tails pipes then, Goes have a sweetish unburnt fuel burnt oil smell
to get it to stop running like this, you have to just very touch the throttle and it'll catch and run as if nothing is wrong.. heck you can even turn the Air bleed screw on the TB to be able to get it to get out of this state too
Please look at the second paragraph of post #4 of this thread in regards to the injectors, thank you
and Fuel pressure is good, and it has no issues building it up to the correct pressure as soon as the key is turned to the run poisition and keeping it there..