Peugeot 307 1.6 petrol wont start

[Haug530D]

My daughter has an Peugeot 307 1.6 petrol from 2005
With the TU5JP4, this winter it has not been very much used and last time it was droven was the 26th of December, she drove it and parked it, some days before january i decided to put a charger on the battery and left it until the 5th of january, she tried to start it but it would not start, after this we have changed the battery and also the coil pack, it has a spark then i check and there is also petrol at the Bicycle valve to the left of the engine and the pump in the tank is running. It doesnt throw any error codes, i have tried with an elm327 odb adapter i have and also a friend of me lent me his Icarsoft diagnostic tab.

Anyone have any good suggestions of what to try? I was thinking maybe the crankshaft sensor but shouldnt that throw a code?

[mickthemaverick]

Have you tried squirting easystart into the air intake while you try and start it?

[Haug530D]

Have you tried squirting easystart into the air intake while you try and start it?

Yes i have

[Haug530D]

Hmm, came across another thread here where a guy said that the timing belt had skipped 4 teeths, one morning his wife were about to start it in cold weather, starting to wonder if the timing is out, i changed the timing belt and water pump this summer with all the right torques and the correct procedure, the car has been running fine since, the kit was a SKF with water pump and belt.

Just wonder if this is a common issue then cold in these engines maybe?

[PaulC5]

Does it turn over on the starter motor ?

Is the key being recognised by the immobiliser - leave it in the ignition and open the driver's door and see if a warning is given - if not it might not be recognised.

A failed crankshaft sensor would not give a fault code since the engine needs to run to check the various sensors. If it turns over on the starter and you are seeing the engine rpm then the sensor might be ok.

[Haug530D]

Does it turn over on the starter motor ?

Is the key being recognised by the immobiliser - leave it in the ignition and open the driver's door and see if a warning is given - if not it might not be recognised.

A failed crankshaft sensor would not give a fault code since the engine needs to run to check the various sensors. If it turns over on the starter and you are seeing the engine rpm then the sensor might be ok.

Yes it turns over and it also has spark, i have checked with one spark plug in the coil pack, also it seems like gasoline coming out of the plug hole.

Ok, but it would not store a error code for the crankshaft sensor? Normally i drive and work on Bmw as that are the cars i like so not that familiar with Peugeot and their engines, but then i do diagnostic on BMW's the codes are stored until fixed or reset them.

[PaulC5]

if the car ran normally when it last worked then there would not be any fault codes. It needs to run again to give a fault code. If you plug in your code reader and look at live data whilst trying to start it see if there are any values that might help. You can also try easy start to see if it will run in case it is an injector fault/not letting fuel through.

[Haug530D]

Hmm, wonder if the valves are bent maybe, the timing were off by several teeths, the engine has not been started after this and there were obviously clearance between the piston and the valves since it was easy to turn by hand, so my guess is that it jumped then my daughter tried to start the car, i inspected the pistons trough the spark plug holes and it looked like a dent in one of them, but i will have to look further another day since i didnt have much time today.

But can i conclude that all of the valves are bent maybe?
Also if i buy new valves is it enough to lap them or do they need resurfacing? The engine is only driven around 80000km

[Haug530D]

So, no compression in any of the cylinders, and marking on 2 of the pistons, it looks like the timing that was off made this happen.

Anyone have a clue to what could cause this? I changed the water pump and timing belt last summer and followed the correct procedure, my guess is that snow would melt and cause water to go into belt maybe making it slippery and it would skip, trying to find out why cause i will take the head apart and change the bent valves and resurface/lap the valve seats, but dont want this to happen again, so looking for a reason to why it happened in the first place.

[Paul-R]

Out of interest, how many kilometres had the vehicle done between doing the pump and belt and when the problem manifested itself?

[Haug530D]

Out of interest, how many kilometres had the vehicle done between doing the pump and belt and when the problem manifested itself?

Not many, i havent checked but my daughter uses it twice a week and drive around 100km during the weeks.

[PaulC5]

Things I can think of that might cause a timing belt to fail early can include
- belt not tensioned correctly
- belt not timed up correct
- failure of the tensioner
- wear on the pulley teeth
- coolant froze if it was not the correct strength during cold weather
- poor quality/cheap belt/wrong belt
- engine seized

[Haug530D]

I think i have an answer, i've been wondering why there has been water on top of the engine each time i have inspected it, today i watched this YT video about timing belt change and realized my daughters car is missing the sound Isolation under the bonnet, i can see condensation drops under there and i think maybe these drops og water has found its way down to the crankshaft pulley and frozen, so that then my daughter would try to start it the belt would slip on the ice that was on the pulley.

I'm pretty confident that this could happen as there is another car/brand that has an design flaw that can cause this to happen during the winter.

Cause im 100% sure the timing belt and water pump was installed correctly, ive changed a lot of belts on other engines before and im always thorough than doing this kinds of jobs.