problem with starting

[rob01792]

i have 04 plate 1.6 16vvt i push the button it turns over but takes bout 5/6 sec to start same if its hot or cold once its started it fine
i changed the tdc sensor and loom changed the cam sensor but still the same the car only has 29k on the clock
its been on renault computer nothing flags up it going in n/week for software update as advised by a renault workshop manager he does not think its the dephaser as there is no noise on start
anyone know what might be wrong with it

[davelowe]

What is the battery state/charge with the engine off? Is the alternator and regulation voltage correct (13.8V - 14) with the engine running?

[manoman48]

Try checking basics like cleaning the throttle body before getting into anything too technical. Make sure you disconnect the battery so that it reinitialises the throttle body after you have cleaned it. Has it been serviced recently? Have a look at your spark plugs and air filter. Then move on to the ignition coils and battery.

[rob01792]

it had full service last week sparks filters etc all changed. throttle body cleaned battery alternator and coils all in good order turns over fine just take that 5 to 6 sec to fire

[rob01792]

anyone had similar as renault dont seam to know just want to change things but say they not sure it it will fix it

[rob01792]

starting to get pricey now at first the main dealer said cos it not have renault branded plugs. then they done a software update now they say its a timing issue prob the dephaser but they still cant say 100% that will cure the problem .
as anyone an idea what it could could be

[rob01792]

still have this problem going to change dephaser does anyone think its could be something else

[davelowe]

Someone really should answer this for you. I don't know myself, but the dephaser symptoms have been well documented. All I can remember about that (being a diesel owner) is that it will probably sound like a bag of spanners when you start it. If not, it maybe something else.

[jowett69]

Take it that u done all then normal stuff like plugs, leads, cleaned throttle?. and it does sound like a bag of spanners( got mine dephaser done year ago and sometimes still sound like a bag of spanners!!) then you got £600+ try the dephaser, if you got the money trade it in, because the dephaser will break down again

[rob01792]

makes NO noise on start up and it is a bit flat when on bypass/motorway and fuel consumption seems high

[AlexB]

Does disconnecting the dephaser control valve solenoid change anything (apart from causing a warning light on the dash)? There can be a blockage somewhere in the oil route to the dephaser.

[rob01792]

how do i do that do i just unplug and leave tick over or drive it

[jowett69]

check spark plugs see what colour they are. mine was running ok but flat in places, then started after month or so started missing. noticed white burnt marks on coil.