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Post by beetOls on Jul 18, 2005 12:46:33 GMT 11
lately i notice a lot of white smoke during startups (in the morning) but disappears once hot or after a few minutes of driving...the smoke is not thick though continuous and you can really smell it! its just enough to make the garage a lil hazy.
someone told me its because of the valve seals, so i was thinking it might need topping/top overhauling..
anybody here having the same experience? is this something i need to address immediately and would incur more cost if left as it is?
thanks!
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Post by Bruce on Jul 18, 2005 13:28:55 GMT 11
I have valve seal problems with the 4/107 Perkins diesel in my yacht, been a problem for a long time and now she is hard to start.
If it is a valve sitution it well be oil burning smoke, grey mostly, and oil showning out the end of the exhaust pipe or at any joins. The oil only leaks through the warn seals when you turn the motor off, so after you burn the excess when you start it up then it is ok till you stop the motor for say over night.
I have been told that they can do a replacement instui,if they can better than taking the head off.
Are you using any oil yet?
Anyway I would not think it would be a problem if you use the vehicle often.
Hope this has been of some help.
Cheers Bruce
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Post by James W on Jul 18, 2005 15:58:21 GMT 11
If burning oil due to valve seals this should be more blue smoke than white in colour. White smoke is usually not quite hot enough to burn diesel. Thats assuming it's not steam/water.
So if it's white smoke I would be looking at the glowplugs rather than valve seals.
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Post by beetOls on Jul 18, 2005 17:09:36 GMT 11
so if its burning oil...i should pretty much see the effect on my oil consumption eh...its been almost 4k since my last oil change and iv added about half a liter of oil (would this still be normal?)where would you find the glow plugs on a 4jb1t engine anyway?
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Post by beetOls on Jul 18, 2005 17:11:49 GMT 11
...and if its the glow plugs, wouldn't i have a hard time starting as well? i don't experience this...thanks in advancE!
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Post by geeves on Jul 18, 2005 19:13:31 GMT 11
On the 4jb1 the glowplugs hardly come on unless the engine is less than 3 deg (lower if the sensor is faulty) As this is a direct injection engine it hardly needs glowplugs. I just climb into mine and start like a petrol unless there is frost on the bonnet although it quite often stalls straight away but always goes second try. Cold diesels do smoke a lot when cold and this engine is probably one of the worst for this . You say the smoke smells but what does it smell of. A diesel or kero smell is normal an oil smell or steam smell is not. Half liter of oil burned in 4k is ok depending on the milage some burn more some less Changing to a differant oil might help What do you use. Also keep an eye on the water level in case you have a head gasket leak.
Now thats all the doom and gloom the chances are its just due to winter in Wellington.
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Post by beetOls on Jul 18, 2005 19:41:25 GMT 11
water level is fine, no over heating whatsoever even during heavy traffic or long idle. im using mineral based oil from Petron (gasoline station). i think its 15w-40 rating or 20w-40...is synthetic oil preferred?
anyways...the smell is...almost same as black smoke
and one thing...we don't have any winter here so there's no excuse for white smoke..haha.
lastly, i can really leave with the white smoke since its not really that unbearable and it goes away after taking off...ill observe as well if it gets worse!
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Post by geeves on Jul 18, 2005 20:54:39 GMT 11
I got you mixed up with someone else a little closer to home. My wagon does still give a single puff when starting if temp is less that 10C or so more when colder. I doubt you ever get that low. That also throughs out the prices I suggested on the turbo.
The oil you use must be designed for diesel engines and should have a CF or better rating (Im useing a CH4 rated oil) This is a differant spec to the SH type rating on petrol oils although some oils carry both marks. If the pack dosnt say designed for diesel engines or somthing similar use somthing else.,
The smell sugests diesel so could be an issue with the injectors etc but very hard to tell when we cant see it
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Post by beetOls on Jul 19, 2005 14:41:16 GMT 11
usual morning temps here would be around 25C...mine even gives less smoke when it gets lower than that...weird. well...the smoke is a lil bit gray in color and is continuous when idle...and present when changing gears within 10 mins of driving...disappears when at normal working temp. yup the oil is designed for diesel engines...im really ok with that as long as it doesn't stay all throughout! haha.  |
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Post by beetOls on Jul 20, 2005 11:20:03 GMT 11
finally...iv decided to let my engine go under the knife tonight until tom. as i thought 10 yrs of service without major repairs is really not bad at all...so! top overhaul it is! =) hope ill notice the difference after!
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Post by geeves on Jul 20, 2005 13:34:29 GMT 11
what milage have you done. My bighorn is 16 years old and 180000km and never been touched beyond cambelts and water pipes
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Post by beetOls on Jul 20, 2005 14:14:17 GMT 11
oh...add 13000kms and thats my mileage...that's my one and only daily driver no timing belt since its gear type, just the usual fan,alt, psteering and ac belts...=)
the smoke really is not bad at all...i just thought i would be good preventive maintenance as well since it isn't that costly...got a good deal for the OEM parts needed
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nealo
Isuzu Baby
Posts: 8
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Post by nealo on Sept 14, 2005 17:51:08 GMT 11
Re Valve seals and white smoke
It's most likely your glow plugs casing the problem. Try heating the engine twice before starting. If the smoking decreases then there's your problem. Go see a sparkie and get them tested or check one of the many after-market replacements glowys.
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Post by geeves on Sept 14, 2005 21:04:21 GMT 11
Hes in Manila and has stated 25 C in the mornings. Direct injection diesels dont need glow to start at that temp. Even indirect injection would probably start without a glow.
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Post by beetOls on Sept 15, 2005 8:27:28 GMT 11
hmm...lemme change that, i think its about 30C...whatdya know, ive pinned down almost all of my problems on my truck...had the tranny parts replaced (plate, cover, bearings) and she's running ok right now...but yeah, white smoke is still there when idle during startups. im thinking more of a turbo leak problem as we experienced the same with our cat payloader (although that one really conked out and stopped working)...im just looking for a good cheap shop to have my turbo resealed
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Post by beetOls on Sept 15, 2005 8:30:44 GMT 11
where are the glow plugs located by the way?
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Post by geeves on Sept 15, 2005 11:11:30 GMT 11
Roughly where spark plugs would be if this was a petrol engine
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Post by mulover on Sept 15, 2005 17:42:59 GMT 11
You have to remove the alloy casting that goes over the top of the motor to the inlet manifold, plus some of the piping in there too, not a major but is kinda fiddly, is almost worth doing a compression test whislt you are in there if you think you need one, But thats just my 5cents worth.
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Post by sneeble on Sept 20, 2005 9:45:00 GMT 11
so thats what it is, if I have travelled 400km plus, the next time its started it belches burnt oil smoke for about 15 - 60 seconds on starting then comes right. Funnily enough I dont had the same problem with smaller distances
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Post by geeves on Sept 20, 2005 11:37:42 GMT 11
look at the posts on "oil catch can" When driven hard you get higher blow by than normal which forces oil into the intake which is what your burning. Not bad unless very bad and some isuzus do it from new. What milage have you done
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