172 won't start

[jonesyblue87]

My clio has decided it doesn't want to start. It turns over but won't fire. This morning for example, I drove home from misses' house, drove to work then went to start it to go and get tyres now it won't start. It just turns and turns and turns but won't fire.

Suggestions anybody?!

 

[Dan@SJM]

Try wobbling the crank sensor plug.

 

[MicKPM]

Red light goes out yes and not on solid?

 

[jonesyblue87]

Red light goes out yes and not on solid?

Yes goes out as it should do

 

[MicKPM]

I thought it would do otherwise it wouldn't allow the engine to crank but had to ask.

Assuming the fuel pump is priming at key-on? These cars are getting on a bit now and they've always had issues with the in tank fuel pressure reg but just trying to rule a few bits out.

 

[H4RRY]

I had same problem but I believe it only cranked for so long before stopping so not sure whether yours is the same or whether it just keeps cranking. If it is the same then my problem ended up being with a cable that runs from the ECU to a connection down by the fuse box on the front right of the bay. Its a twisted cable that runs underneath the airbox. Do a search on here and you'll see what colours the wires are because I can't remember now. Get a tester on the cables to see if their is some resistance, from memory there was very little resistance on the troublesome wires but it was enough to cause a problem.

Good luck with it

 

[Feates172]

My mates 172 game his the same issues, I removed the crank sensor, have it a clean, and it's been fine since.

Try this, as it's free.

 

[Browny]

I've had this issue, when flogging it it would cut out and high revs and you would have to leave it for a while.. sometimes it just wouldn't start.
I had it ran on diagnostics 4 times with no errors so I've replaced the fuel pump (what we deduced was the issue) and stuck some high end injector cleaner through it.. back to 110%.
She,s getting a service to be on the safe side as well.

 

[jonesyblue87]

Thanks for the advice, will catch up with my mechanic mate tomorrow and try all of the above!!

It started eventually today and I managed to get tyres and get home. Haven't tried it since!!