KA 1.3 Duratec 2003 Intermittent non start

[TLDMobilerepair]

Strange one this, went out to it to replace the thermostat housing as it had distorted and was leaking.
A few days later the customer called to say the car was refusing to start, this is the first time it had done this in the 7 years they had owned it. It's covered just under 30k

I plugged in and there were no DTC's present. Engine was showing rotation in live data on cranking, coolant temp was showing at 10 degree's and fuel pump could be heard priming. Checked the injectors with noid's and all had pulse, Spark was also present from each plug

I removed the plugs and they were soaked with fuel. I dried them off and refitted the plugs. It then started first turn of the key as it should. The car was then fine for a few days and must of been started around 10/15 times without any problems.

Customer phones again a few days later to say car was refusing to start, again plugged in and no DTC's and all data the same as before. Once again pulled plugs to find them soaking, dried off and started first time once again. Anyone come across this before on these?

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