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ok guys im on the way to get my gun license, but before i put the carnival out of its misery I thought Id see what the consus was....
My 2.5L 2001 (second engine) carni has developed an engine miss, im pretty sure its through the rev range, but is more noticable when at idle. There is also the "puffing" of the exhaust. When I fired it up yesterday (its been parked in the garage and not driven for the past month) the exhaust smelt rich, a definate unburnt fuel smell.
I decided to call the NRMA roadside technical line and the guy there said knowing these types of engines, the first thing he would do is whack a compression gauge on there cause the head gasket has probably failed. I can clearly see his logic and was glad that he "knew" about the problems with these cars. My only issue is that I would have thought id get the coolant / oil contamination but i havent, which gives me the hope thats its either a HT lead or sparkplug.
Anyway, I'll throw it out to the forum and see what you guys think, Im loathed to pour money into this thing but if its only a few hundred then i can live with that, a few thousand and thats a different story !!
assuming it is a diesel 2.5 you may have a valve that is "not closing" all the way or burnt, this can happen to many engines including gasoline engine that "sit" for prolonged periods of time. The valve "stick"
sorry, its a 2.5 petrol (gasoline) engine (I think K5 is the Kia designator). It was driven daily, albeit short trips but still daily without any problems. Then one day I got in and fired it up and it felt like something was out of balance with the engine, it also didnt sound right (lumpy not smooth idle) and it had the puffing of the exhaust. There is a definate "miss". Hope this clarifies. Thanks
sorry, its a 2.5 petrol (gasoline) engine (I think K5 is the Kia designator). It was driven daily, albeit short trips but still daily without any problems. Then one day I got in and fired it up and it felt like something was out of balance with the engine, it also didnt sound right (lumpy not smooth idle) and it had the puffing of the exhaust. There is a definate "miss". Hope this clarifies. Thanks
Hi b1_n,
Just a couple of things I could think of, with the age of the car I would check to see when the wires/leads for the spark plugs were last changed. This is a definite possibility. If there is no oil under/around the radiator cap, then I wouldn't worry about the compression test at the moment.
If you change the wires/leads then change the spark plugs to.
It would be a good opportunity to get an independent mechanic to run a diagnostics check, I would think a problem with the spark should show up as a misfire, which should be detected by the ecu.
Doubt is would be a problem with the idle air control mechanism as you said it was there all the time. The air flow hot wire could be dirty, easiest way to check that is just disconnect it and start up, if there is no difference in the way the vehicle behaves then it might be dirty or faulty.
Before we sold the old girl when the second engine went, the one item that did need replacing was the leads/wires. Which was very early for the model, so I would get them checked first.
Change the ignition leads as they are known to be troublesome on earlier cars.
The ECU does have a misfire monitor capability but believe it or not, it is disabled on our carnivals as it wasn't required for our emission standards. So you don't get a warning via the CEL of a missfire.
Don't change the plugs unless they have done around 100,000kms as they are platinum tiped and are very good at self cleaning.
Change the ignition leads as they are known to be troublesome on earlier cars.
The ECU does have a misfire monitor capability but believe it or not, it is disabled on our carnivals as it wasn't required for our emission standards. So you don't get a warning via the CEL of a missfire.
Don't change the plugs unless they have done around 100,000kms as they are platinum tiped and are very good at self cleaning.
I know the platinum plugs are good to 100,000kms, but if there has been a specific problem on one of the wires/leads then I would suspect that the plug might be a bit beyond "cleaning".
Pretty useless having a feature and not linking it up, these emission standards are truly a joke in australia, I wonder when they will get serious with this.
What are the current standards on this Classicboy? I am not familiar with the updated emissions standards in australia, I had thought we were implementing the stricter european standards shortly?
Hats off Kia for disabling something useful !! Thanks for the replies guys, all good stuff and its giving me some hope yet that it may not be as bad as a blown head gasket.
The new engine has around 24K km's on it and as far as I know they recycled the plugs etc from the first engine, so all up plugs & leads have done around 80-90K km's. I was going to put it in for the 100K service soon - not with the dealer though !! (a bit early i know) but with this current problem, I didnt want to be told "....oh and we have found this"
Out of curiosity, whats the average price for a set of leads? are there any aftermarket ones available (Im a fan of Top Gun leads) or are we stuck with genuine parts only?
Again guys, thanks for the replies, keep them coming if you think it could be anything else
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