[Rico75]

Hi all.
Can i ask if its normal to have blue looking smoke out the exhaust of a 2005 93 1.9 Tid 8 Valve.
I have checked the coolant and oil and its not mixed and levels are all good.
My oil is at 25 % quality and only use shell Helix oil ( good stuff).
Its drives spot for 124k miles but still a little anxious when this happens.
The revs sit at 1000k and a smell becomes present.
After a few minutes it clears .
As i haven't had the car very long not sure of the quirks of these cars.
I have also noticed cold mornings below 5°c its a pain to start first time, but after the first start is a lot easier.
If anybody could advise if the issie is normal i would appreciate your time.

Nice to find a current saab forum still in use.
Cheers
Richard

 

[lizzard-t]

Hello and a warm welcome aboard the good ship saabscene Richard.
This blueish smoke is it first thing in the morning from cold ?
First question is where dose the temperature gauge sit in normal driving when warmed up ? It should sit at 9 o'clock
And should take approx 10 mins to reach fully operational temperature.
If it's sluggish to get there could be that the thermostat requires replacement .
Comes as 1 unit i.e. The thermostat is built into the body of the housing .
Which incorporates the temperature sensor for the glow plugs
Which maybe the reason why you have poor starting below a certain temperature.
But that blue smoke could be unburnt diesel which could be a by product of the glowplugs not heating up .and you poor cold start situation.
You can carry out tests to see if you glow plugs are working ,or a good garage with a good scanning tool will be able to pin point the defective plug , but fir the price might as well have all 4 done at same time .

 

[Rico75]

Hello and a warm welcome aboard the good ship saabscene Richard.
This blueish smoke is it first thing in the morning from cold ?
First question is where dose the temperature gauge sit in normal driving when warmed up ? It should sit at 9 o'clock
And should take approx 10 mins to reach fully operational temperature.
If it's sluggish to get there could be that the thermostat requires replacement .
Comes as 1 unit i.e. The thermostat is built into the body of the housing .
Which incorporates the temperature sensor for the glow plugs
Which maybe the reason why you have poor starting below a certain temperature.
But that blue smoke could be unburnt diesel which could be a by product of the glowplugs not heating up .and you poor cold start situation.
You can carry out tests to see if you glow plugs are working ,or a good garage with a good scanning tool will be able to pin point the defective plug , but fir the price might as well have all 4 done at same time .

Hi lizzard .
Thanks for your reply.
No smoke on start up.
Temp sits bang on half way as you asked.
The issue is every now and again.
Cold weather has made start up more difficult but today at 10 degree it also struggled.
I have asked about but nobody wants to get involved with replacing glow plugs on such an old car.
I have noticed that sometimes on start up the. tacho goes up and down and when this happens it does start up better than usual.
Love the car even though people say its a shed

 

[Yid1209]

Hi Richard,
Its a different vehicle But Nissan Primastar van (Vauxhall engine) had a similar problem, & my 9-3 did this the other night. I believe its The EGR valve temporally sticking open hence the smoke.
I changed the EGR on the van No more blue smoke.
Might be worth cleaning it 1st.
Regards Chris.