I have a problem.

My car when it is cold starts without difficulty ... However when it is hot: I am compelled to emphasize the starter and me several times and sometimes it does not even start ...

Someone an idea?

I have a french 94 FD3S. I checked solenoids and ecu error code = nothing !!!

 

Mileage on the motor? Could be low compression.

Also might be an electrical problem, check the connections at your battery, alternator, and starter.

 

To add to Rich's post, another spot to check is the Pressure Regulator solenoid.

 

Hi Jeff!

Sorry to read that! 2008 is not starting well!

I myself have sometimes a similar problem that the car stalls when trying to get at idle after a hot re-start. But always starts finally and reaches a stable idle if I keep a little pressure on the gaz pedal.

Hope for you and me it has nothing to do with low compressions... Did you test them?

 

Make sure your OMP is working and you are full on oil. Mine did that and I realized I was low on oil. As soon as I filled it up, it was no longer a problem. If your OMP is not providing oil, you will get horrible compression.

 

Mine was the same a few months ago. I'm going through a rebuild now because I had low compression in my front rotor from blown corner seals. I think the explanation was that when the engine is warm the rotor housing would expand and make it harder to hold compression.

Another symptom I had was a rougher idle than before when the warm start issues arose.

Get a compression check. I hope it's not something expensive .

 

[QUOTE=GoodfellaFD3S;7694849]Mileage on the motor? Could be low compression.

+1

 

I hate this problem and have trouble shot all the mentioned issues with a 4500 mile motor. Now the car doesn't even start. I hope the spring finds some motivation for me to mess with it again.

 

push the car, normally when the rx7 is very low on compression starts this way but it wont do much.

well i ve seen cars breaking down within the same day of the rebuilt so i would consider your situation of the 4500 miles better

 

I feel sorry for some of you guys. I never had this problem even with over 100k on an original engine.



Use a piston compression tester. Remove the needle valve so you can see the bounces on the gauge. Do a cold engine compression test and log the numbers. Then when the engine starts hard starting when hot, do the compression test again. This is a great way to diagnose the compression differences to further help you narrow down your problem.

 

Thanks guys....
engine have around 20 000 kms (it's a hurley engineering UK rebuild).

I already check the fuel pressure solenoid.
I will check the oil level ...
I hope this is not bad compressions... i will try to make a compression test... what's bizarre = the car start very well when the engine is cold. What do you think about fuel temp sensor (on the secondary fuel rail) ???

 

You should also check the injectors. They could get a little drippy when warm. If you're running the original 14 year old injectors, they may not be operating at their peak performance anymore, especially if they haven't been cleaned in a while.

 

Could hot coils also cause this? It would start fine when they are cool. But as they heat up, they lose spark efficiency? (Just guessing, but is this a possible cause?)

 

Try this....
you sound like your FD is flooded.....

I've been reading alot on the "proper way to shut down your FD", and this has a tendancy to happen to cars that are hot and from short trips.

bring up up to 3000 rpm and hold for 10 seconds,
then turn key off,
As the car is sutting down press the gas pedal to the floor.

As I remember it will take the pressure out of the fuel lines when you shut down.

 

No not really---the idea is to clear unburnt fuel from the rotor housings.

 

I have a similar problem, my car starts up no problem cold, but for some reason when hot it wont always start.

Usually what i have to do is crank it over and let it crank and then hit the gas pedal a couple times and itll start up everytime. Im not entirely sure what to even begin to think tho...

 

I'm surprised soo many people have this problem. I'm with everyone on here that suggested comp. testing it. It could be a small issue, but it doesn't sound good. Sorry...

 

uh oh xD your not filling me with hope here man xD

 

I too have this problem.

I'm also losing a bit of coolant. Someone suggested that at high pressures (when hot) coolant could be leaking into the combustion chambers, making it difficult to start until the engines cooled and the coolant had evaporated??

From doing a search it seems it could be a number of things;

- Low compression
- Low oil compression
- Faulty fuel pressure solenoid
- Leaky injector
- Bad earthing
- Leaking O-ring



Hmm, where to start...

 

Bad crank angle sensor(s) did this to my car as well...just to throw that out there too.

 

Low compression is the easiest one of the bunch to validate first.

 

Tis true, but also seems to be the last everyone wants to check as they fear reality

 

should the compression test be carried out from cold or warm start?

 

Ideally warm, but cold can give you an idea of where you stand.