[Daddio]

I have a 1.4 V reg. 16v with 110K miles on the clock, it starts without any problems but it developed a misfire and the fuel comsumption dropped from 37 too 20 mpg. I changed spark plugs and all the ignition coils and it ran like a dream, for a couple of days. Then when driving along it was if someone had flicked a switch and the misfire came back and the consumption dropped. Does anyone have a thought on the problem?

 

[chris m]

welcome to the forums. you have tried the obviuos things, hopefully one of our more technical members can help

 

[Daddio]

I may and I repeat may have diagnosed the problem. When I disconnect the coil on No 1 cylinder the engine falters but if I disconnect the injector cable there is no change in the engine revs. By deduction I believe the injector is stuck open which would cause the rough running and excessive fuel consumption. I have added a bottle of Wynns cleaner and I will wait and see what transpires

 

[Jamesy]

what about your Spark plugs ??

 

[Daddio]

Spark Plugs where changed along with the coils last week. The car sat for a couple of days while I waited for the coils to be delivered. The injector may have temporarily cleared itself in that time.

 

[fig_jam_uk]

Welcome to the forums Daddio hopefully you will receive an answer soon. Afraid im not techi but there are plenty out there who are

 

[Daddio]

Fingers crossed The engine started to show some signs of improvement after about 30 miles and now it is back to the way it should be, 40 mpg and smooth as a baby's bum.

 

[agraudi]

could you please tell me how to post a thread

 

[bonedavid]

goto the section where you want to post (if general forum for example go here http://www.renaultforums.co.uk/general-forum/2/

then click on the blue "new thread" button near the top of the page.

add a title to your thread then type away at what your problem is.finaly press the "submit new thread" grey button at the bottom to post your thread to the forum.

any problems please reply here.