I'm having problems with my Laguna 1.6 16v 112hp - has 125k miles.
It never starts right away/good when car is warm - when I turn off the engine and let it cool for 30 min - few hours. I also smell gas in the cabin after it has finally started. Sometimes it seems like it has started - then it just dies out.
It's always ok when it's still hot...so if I just restart it or start it again after 5 minutes. It's generally also ok when it's totally cold - happened only once it didn't start up cold otherwise, it's always no-problem.
Car also has lpg installed. When it's running (petrol or lpg) there's never a problem - runs ok.
What I noticed is that the engine isn't as calm as it used to be. When I stop the car the rpm is is slowly dropping from 1000rpm to cca 700. This always used to be just below 1000 - and car it then not so "shaky".
I've changed/repaired lots of stuff in trying to fix this issue - all with no luck! My repairs:
- Changed thermostat with coolant temperature sensor (was leaking)
- Changed crankshaft sensor with wiring
- Changed camshaft sensor (http://www.renaultpartsdirect.co.uk/...61091_zoom.jpg
- Changed air intake sensor (http://i.ebayimg.com/images/g/fMsAAO...6Dx/s-l300.jpg
- Cleaned the fuel injectors
- Changed spark plugs
- Changed the battery
Some say I need to do a compression test (which I did 2 months ago and was ok), cause LPG might have done damage to the engine. But then it generally wouldn't run ok, not just having problems with warm start.. or?
I'm really running out of options here. I've thrown too much money into this car and yet this problem persists. I'm sick of always thinking if it's even gonna start when I'm approaching the car after 1h of stopping it.
If someone has any idea please help.