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Megane 1.6 idling and stalling problem

Hi,

My Renault Megane 1.6 has some engine problem that my garage cannot fix:

1) Cold engine start is difficult. Engine will start but then stall. Engine needs stepping on gas to start. 2) Stationary RPM is unstable with cold and warm engine 3) Cold engine will stall when idling in front of red traffic light or when shifting gears 4) Cold engine will stall when turning steering wheel to leave parking space 5) Exhaust makes puffing sounds when idling, cylinder failing to ignite from time to time? 6) Above prbs occur when running on gasoline or LPG.

Otherwise engine runs fine, no problem when accelerating or speeding. Since motor management reports no problems, and exhaust gases are within legal limits, garage suggests the problem mut be in parts not monitored by motor management. They suggest adjusting the in/outlet valves, could this really be the cause?

thanks for any suggestions Huibert

Reply to
Huibert
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To me, it sounds a bit like the idle speed is set way too low. Do you have a rev counter? What speed does the car (attempt) to idle at?

Cheers

Dave P

Reply to
David Precious

Sounds like it's running a very rich mixture, or having ignition trouble. I'd try to sort it quickish, because you don't really want to be pumping out unburnt fuel - doesn't do your catalytic convertor any good!

I'd check:

1) that there's a fat, healthy spark at each plug lead (pull one off, stick something metal in it and hold the metal about 5-10mm away from a good earth point - NOT touching the metal! - then have someone fire it up while you look for a decent spark.

2) check the air cleaner isn't too dirty - if the filter is extremely dirty

  • blocked, it's possible the motor isn't getting enough air, so the resulting mixture is too rich.

Did these problems start when the LPG conversion was done? Or were they evident before, or did they appear long after? Did it start happening suddenly, or has it been getting gradually worse?

HTH

Dave P

Reply to
David Precious

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