Renault Laguna misfiring on start up
Variant: RT auto
Model Year: 1999
Categories:
Running Rough, Starting & Power Loss
Hi guys,
first trouble in ten years. When starting up misfiring with clouds of blue smoke and smell of burning oil. After about one or two minutes it settles down and drives fine.
I've changed all the HT leads and plugs, (three were oiled up). The engine service light is on plus the injector light..To make matters worse I'm on holiday at the moment so hoping to get back home.
There doesn't appear to be any water coming out of the exhaust if that's any help.If I switch off and back on after about a minute the problem recurs.
Thanks in advance for any ideas and if it's likely to be safe to drive home,about 80 miles.
first trouble in ten years. When starting up misfiring with clouds of blue smoke and smell of burning oil. After about one or two minutes it settles down and drives fine.
I've changed all the HT leads and plugs, (three were oiled up). The engine service light is on plus the injector light..To make matters worse I'm on holiday at the moment so hoping to get back home.
There doesn't appear to be any water coming out of the exhaust if that's any help.If I switch off and back on after about a minute the problem recurs.
Thanks in advance for any ideas and if it's likely to be safe to drive home,about 80 miles.
Posted: Mar 19, 2011 (13 years ago)
Could check oil breathers and pipes etc. Any blockage/restriction can pressurize the crankcase .May also be valve stem oil seals worn but usually get signs of this with blue smoke out of exhaust when pulling away after idling . Could also check oil level as too much oil can cause this , but if you haven't topped it up probably not that . Hope this helps .
Posted Mar 19, 2011 (13 years ago)
Thank you whittingehame...Actually I did top up about 100 miles ago,and slightly over the limit (quarter of an inch on the dipstick)....Is this likely to have caused any damage or will it rectify itself?
Posted Mar 19, 2011 (13 years ago)
Normally that amount wont do any harm .Unless it was more and has blown most of the excess out .
Posted Mar 19, 2011 (13 years ago)
Thanks buddy, I'll let you know next week if and when I get back home...
Posted Mar 19, 2011 (13 years ago)
Thanks buddy, I'll let you know next week if and when I get back home...
Posted Mar 19, 2011 (13 years ago)
Actually, if it were more oil, what damage could it have done do you think?
Posted Mar 19, 2011 (13 years ago)
Briefly , too much oil can cause build up of pressure in engine crankcase forcing oil passed seals , piston rings etc. and also into exhaust where it burns and causes excessive blue smoke .If an awful lot of oil in engine and continued to be run , can cause more serious damage ruining engine .But to do damage , normally got to be way up dipstick , what yours is 1/4" above max should be ok . Safe journey home .
Posted Mar 19, 2011 (13 years ago)
Thank you so much again whittingehame,you've been really helpful.
Posted Mar 20, 2011 (13 years ago)
I've just had the car fixed and it turned out to be the MAP sensor in case anyone else has similar problems....Thanks again guys.
Posted Mar 22, 2011 (13 years ago)
Thanks for update , good to hear you got back home o.k and car fixed with no major problems .
Posted Mar 22, 2011 (13 years ago)
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