Outer Limits 4x4 Board

My magna has started blowing smoke intermittantly.

It has always blown a belch out when started after sitting warm for an hour or so then just stops.

The other week it was sitting running for about 20 mins after being driven, it was already at running temp. It started puffing smoke while it was idling and when I took off it belched smoke out until I had stopped and started twice, then it stops smoking.

It did the same yesterday and I am thinking it is the injectors??

Maybe that they aren't spraying correctly and at low pressure(idle) it can't atomize the fuel thus it goes through unburnt??

And I assume if it was rings then it would smoke all the time?

It does have blow by but once again, wouldnt it smoke all the time...

i highly doubt its injectors mate, magnas are well known for burning oil it sound like rings or valve stem seals to me.

I would have a pretty good punt its valve stem seals if its white smoke.

Don,t they come with smoke straight from the factory ?

Black /brown injectors

white burning water

white/blue tinge -light blue , at start up - and down hill with trailing throttle
or backing off, valve stems or Rings
Blue just about allways = Rings,

how many K,s ?

who cares its a magna what do you expect

what coulour is it?

is your magna an auto? if so does it have a vacuum modulator, the colour of smoke will be whitish. other wise it sounds like valve stem seals not to hard to do.

simkell wrote:is your magna an auto? if so does it have a vacuum modulator, the colour of smoke will be whitish. other wise it sounds like valve stem seals not to hard to do.

no modulator on a magna

What you are describing is classic worn valve stem seals or valve guides. Both 4cyl and V6 magnas suffer from the same problem.
When left idling or sitting after running the oil seeps down past the valves and burns in the engine.
You usually get fairly good results from just replacing valve stem seals. Dunno what sort of magna you have but if it's a 2.6 or 3.0 litre then valve stem seal are a reasonably easy job if you are mechanically minded.
If it's 3.5 litre don't even think about it.
Cheers.

Oh by the way, too much fuel burns black, excess carbon burns brown, oil burns light grey/blue, almost white (like what you have) and water produces steam, not smoke. Steam is easy to pick as it disapates real quick in the air, smoke lingers.

OK, so if it is valve stem seals, does this hurt the engine at all? I don't imagine it would?

The vehicle only has to last me a couple of months as I too will be moving to a motorbike as a daily commuter.

It effects the enviroment and other drivers more than it effects your engine. It could foul spark plugs if you just tootle around town with it and worst case is you don't bother checking your oil and seize the engine. But apart from that it's not hurting anything.
Thicker oil and a dose of wynns stop smoke may alleviate it somewhat.

Cheers