Kia Diesel Problem, can someone help?? - Kia Forum
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post #1 of 14 (permalink) Old 11-04-2008, 08:53 PM Thread Starter
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Kia Diesel Problem, can someone help??

Hi all,

I have a 2003 Kia Pregio Van and it is Diesel.

My problem is that when my van revs over 2500rpm it starts to blow blue smoke out of the exhaust.

I have already changed the following: engine oil, oil filter, diesel fuel filter, air filter and fuel injectors cleaned.

I am unable to travel more than 60miles per hour.

Does someone know what could be causing this?

Thanks,
Tom

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post #2 of 14 (permalink) Old 02-27-2009, 02:38 PM
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check your fuel mixture, but diesels are notrious for blowing smoke out tho
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post #3 of 14 (permalink) Old 02-27-2009, 08:16 PM
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Quote:
Originally Posted by newstyle View Post
Hi all,

I have a 2003 Kia Pregio Van and it is Diesel.

My problem is that when my van revs over 2500rpm it starts to blow blue smoke out of the exhaust.

I have already changed the following: engine oil, oil filter, diesel fuel filter, air filter and fuel injectors cleaned.

I am unable to travel more than 60miles per hour.

Does someone know what could be causing this?

Thanks,
Tom
Blue smoke is usually a sign that engine crankcase oil is getting into the combustion chamber. A fuel or air/fuel problem would more likely produce a black, sooty smoke. I would guess it could be a leaking valve seal, but more likely a failing piston ring. Have a compression test run on all cylinders of the engine for a start in figuring out what may be happening. Also, if the engine is turbocharged, this could be a leaking oil seal on the intake side of the impeller shaft.

Last edited by Ken99; 02-27-2009 at 08:20 PM.
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post #4 of 14 (permalink) Old 10-14-2009, 10:32 PM
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got the same problem too with our K2700 kia. at first i didnt notice it since it was being driven within the city at speeds below 60kph. power was ok. but last week i tried using it in the highway the engine wont allow to travel above 80kph, it feels like the engine is restricted at that point, and the exhaust starts to blow smoke out. but when i reduce the speed to about 60kph, there is no noticeable smoke at the back. on my way back, i cant even reach 80kph anymore, its down to about 70kph..

anyway i never tried any of those above solutions. i might try replacing the fuel filter first. any other quick solutions? or explain why the engine is acting that way?

thanks guys. glad to be here in KIA forums. cheers!
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post #5 of 14 (permalink) Old 10-14-2009, 11:48 PM
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Blue smoke is not a good sign, it usually means the engine is burning oil [worn oil rings]. The drop in performance is probably due to lower compression [worn compression rings]. Have you noticed an increase in oil consumption? How many miles or km have you traveled?


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post #6 of 14 (permalink) Old 12-14-2009, 01:07 AM
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fuel problem solved

Hi. I had exactly the same problem. I tried everthing but it turned out to be a partially blocked fuel screen in the fuel inlet fitting to the fuel injection pump.Why it made it blow smoke I have no idea. Remove the banjo bolt from the supply fuel line on the injection pump, below the bolt is a spring which retains a very small screen(it looks like a little thimble). The vehicle goes better than it ever has, revs to 4500rpm and has heaps more power
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post #7 of 14 (permalink) Old 08-27-2013, 09:30 PM
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Old post but wanted to agree. We have a 2003 KIA Bongo 3 Frontier 4x4 double cab drop side truck with JT engine. Same as K2700. Would occasionally hesitate a bit after first startup then got worse so it would not go very well at all and huge cloud of blue smoke if revved much at all past 2,000 rpm. Removed small screen behind fuel injection pump inlet with a dental pick and it was plugged with green stuff. Cleaned and runs better than ever. Ran for quite a while with screen partially plugged and now have an injector that is ticking. Would like to adjust the pump a little richer as it is slow starting. Runs lean with no smoke at all. Can not find info on which screw to adjust.
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post #8 of 14 (permalink) Old 10-31-2013, 11:57 PM
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Mine started doing the same, blue smoke over 2500 rpm, misfiring and no power. It was the screen under the banjo union. Cleaned it with some spray electronic cleaner and new car. The debris in the filter was barely visible without a magnifying glass, this filter is ultra fine.
 
post #9 of 14 (permalink) Old 02-16-2015, 04:33 AM
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I have a Kia K2700 camper. the truck has been under water during the 2013 flood in Bundaberg North all the electronics are not working but I have rewired and is good except on the long trip after 200 Kilometers it start smoking at the exhaust and stops, if I let it stand overnight the next day it will do another 200 K. before it start smoking again.
The first time it happen I replace the oil filter,the second time I made sure that the fuel return line is not blokes and the fuel tank breather is free but the problem is steel there.
My question now is the wires going to the fuel pump operating the 2 solenoids should they be both on all the time when the engine is running?
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post #10 of 14 (permalink) Old 01-19-2017, 09:32 AM
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Quote:
Originally Posted by nighthawkGT View Post
got the same problem too with our K2700 kia. at first i didnt notice it since it was being driven within the city at speeds below 60kph. power was ok. but last week i tried using it in the highway the engine wont allow to travel above 80kph, it feels like the engine is restricted at that point, and the exhaust starts to blow smoke out. but when i reduce the speed to about 60kph, there is no noticeable smoke at the back. on my way back, i cant even reach 80kph anymore, its down to about 70kph..

anyway i never tried any of those above solutions. i might try replacing the fuel filter first. any other quick solutions? or explain why the engine is acting that way?

thanks guys. glad to be here in KIA forums. cheers!
Hi, I'm keen to hear what you did to resolve this problem......?

I'm experiencing the same problem with my K2700 at the moment, It's fine if driven at low speed but struggles at higher speed (jittering effect as if there is not enough fuel getting into the system) I would like to know what you did to get it resolved. We took out the screen under the union, had a spring and two washers removed but must say running alot worst since doing that, there was a little dirt in that little screen but not that much. Now loses power at a lower speed 60km/hr, and then struggles to idle after that.

Been told it could be the transverse pump with in the fuel pump or even air getting into the system somehow, going to look at the housing where the fuel pump attaches to see if air gets in there

Last edited by ron1004; 01-19-2017 at 09:45 AM.
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