Good friends
I have a supercharged 4.2 R s-type that has no ignition.
The engine does not start but if it has fuel it lacks spark
The car started a few times but after a second it stopped.
now it doesn't start anymore
we have checked spark plugs and coils
We see that there is fuel because the spark plugs come out full of it.
I hope you can give me some advice on where to start.

thank you

 

Just to be sure - it now cranks but doesn't fire at all?

 

I assume it could have many reasons, but if I understand you correctly, it cranks, but does not start, and the spark plugs get flooded - which sounds like a possible issue with the coils.
If I misunderstood you, and the car does not even crank anymore, you may have an additional overlaying issue now, which could be that there is no more "signal" on the wire to the starter motor (wild guesses: Corrosion on that contact? is there a fuse for that wire?).

 

good morning

The car turns over and injects gasoline but we have no ignition
We have checked the installation from the ecu to the coils and it is ok
The car started for about 40/50 seconds and stopped
now it turns but it doesn't start

thank you

 

That engine is not normally prone to it but could it be bore wash?

(See posts about the 4.0 and that.)

 

Bore wash is not an altogether silly idea...:
We do not have enough information about your STR, like: Was it a daily drive and suddenly you have that issue, or is it more like: " The STR wasn't used in years, then it ran for 40 seconds, and now it does not ignite anymore"? If the latter is the case, the oil might have retracted fully to the bottom (sump) and the cylinders might have been utterly try when you first tried to start the engine, and thereby damaging (scratching) the cylinders. If it is bore wash, you might be able to smell petrol on the dip-stick (in the engine oil)...

 

ckp signal good?

you getting 5v pulse to any coil?

 

hello good
The car started fine but it started doing what I'm telling you.
starts and stops
but then it doesn't even start
there is no error code in the ecu
yes I have ckp signal
and 5v in the coil
but there is no spark
I don't know what could be happening, the cylinders are flooded with gasoline
thank you

 

Was it running fine before the no start. Like this problem popped up out of nowhere

 

if you have a 5v pulse on the coil it should spark. verify power and ground feed on it.

 

Good afternoon
Yes I have 5v in the coil and good ground
but it has no spark

 

can I attach ckp signal in photo

 

@ EVR:
You still have not clearly answered the question, if the S-Type - before your problems arose - was...
a.) driven regularly or
b.) was sitting there for a pretty long time

In case of "b.) was sitting there for a pretty long time". I had meanwhile another idea...: Fuel get old with passing time and those effects could make themselves known after as little as 3-6 month. Perfect example: Our Ford Fairlane drives on petrol AND LPG (liquid petroleum gas). As LPG is cheaper, we drove on LPG all the time, and meanwhile the petrol in the tank gets old and sticky/gluey and it glues the moving elements in the fuel pump together to the effect that the fuel pump does not work anymore, and I had to swap the fuel pumps several times.

You will reply now, that you have fuel in the cylinders, hence your fuel pump works, but that is not the only problem that old petrol can cause. I think it can get to the point that petrol gets that old, that the spark plugs cannot ignite it anymore (which is think was the problem with my motorbike, which I have stored in another country, when I wanted to start it with it's old petrol after 10 years...).

PS: In line with that thought: Fuel in a fuel tank "collects" water(-particles) over time due to condensation. This is the reason, as to why it is a legal requirement to drain a little bit of kerosene from the bottom of the tank in the wing of a Cessna before each start into a a little clear test-tube to look for bubbles. Kerosene is lighter than water, hence the water will be - if present - on the bottom of the tank. 99% of the time there will not be any bubbles, and it is not allowed to fill the drained kerosene back into the tank, but it gets tossed into the environment, which I find pretty unacceptable, but that's the law.
Hence, an unused car will collect quite a bit of water in the petrol tank, and this will certainly not make starting the car any easier...

Note aside: Many will not know that water can be flammable and that there are ways of using water as rocket-fuel, but current car-engine designs do not provide the conditions, which allow to ignite water...

 

good morning
the car worked perfect
gasoline is not the problem
What I don't have is spark in the spark plugs.
gasoline if there is in the cylinders