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General Information => Troubleshooting => Topic started by: toomanycars on August 07, 2005, 02:36:11 pm

Title: Blue smoke on startup and when cold
Post by: toomanycars on August 07, 2005, 02:36:11 pm: What causes blue smoke when the engine is first running? Not just a little, but clouds of it. If I increase the revs to about 1800 the engine misses and farts blue amoke occasionally. Once at normal operating temperature the engine is fine. Isn't burning oil.
Title: Blue smoke on startup and when cold
Post by: Maarten on August 07, 2005, 02:52:38 pm: I think your timing is too Late so half combusted diesel enters the exhaust.. I've got the same prob, going to properly time it tomorrow :)
Title: Interesting.....
Post by: toomanycars on August 07, 2005, 05:06:23 pm: Yes, I have experienced blue smoke from overly advanced timing, but it usually occurs throughout running and is most evident when decelerating. I don't have a dial guage so I can't check timing but I'm fairly confident it's not out. I'm thinking perhaps dirty fuel or air in the system? I know that one of my tractors (that doesn't have a fuel guage) spits blue smoke just as it begins to run out of diesel, and if a fuel filter is blocked (there are 2) it does the same thing.
Title: blue smoke
Post by: fatmobile on August 11, 2005, 02:14:22 am: Is it whitish-blue smoke.
I'm guessing timing too but I'm thinking retarded timing because it sounds like what happens when I don't pull the cold start lever in warm weather ... misses a little around 1800rpm, till it warms up.
There was some blueish-white smoke coming from the Golf and it was starting hard, it got worse if I pushed the cold start lever back in shortly after it started. I advanced the timing and it starts much better now but does put out a little smoke and misses around 1800 at first. I'm going to try advancing it some more.
Title: Blue smoke on startup and when cold
Post by: Maarten on August 11, 2005, 08:21:43 am: Your right... got my english a little scrambled ;) It should be too late instead of too advanced.
Title: Blue smoke on startup and when cold
Post by: fillmore on August 15, 2005, 06:25:23 pm: valve seals. had the same problem, my valve seals were shot, its a pretty easy fix if you know what your doing.