REALLY REALLY annoying idle problem
OK, so I love my little car but recently my patience is starting to wear REALLY thin with all the problems I've had with it.
This is what is happening. When the car is idling, it starts to idle too high (upto 1500 rpm even when its warm) and slowly comes back down to normal. Then, every so often, it revs itself slowly upto 1500 rpm and drops again. Also, sometimes my vacuum drops (at normal idle it sits at about 22 but when its playing up it can drop to 15). And sometimes, when I switch the car on, it revs to 2000 rpm and then cuts out - not jerkilly, it does it very smoothly. Funny thing is, there's no lack of power, and when I'm driving it runs as smoothly as it always has - boost comes on fine, plenty of power when I need it.
Now this is where it gets wierd, I had an oil leak, and on inspection, I found a tiny hole in the sump under the oil return pipe. So, I removed the sump, cleaned it all up, and patched the hole with some specialist sump repair metal paste. I let it dry solid, followed all the guidelines then put the sump back on the car. Filled it with good new oil (used synthetic coz turbo motors like that), then got the car running again. It ran beautifully for 4 days - no idle problems, running like new. I thought that the idling problem must have been due to an oil pressure problem (coz of the hole) and that the engine was revving hard to increase the lost oil pressure. But, now I'm totally confused by it all.
I do hope someone can help. I'm not one for taking my car to mechanics coz they rip you off and I'd rather sort it myself anyways.
Oh yeah, one last thing, its also using LOADS of fuel.
Thanks in advance.........
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No Hyundai any more  (
Current car: Rover 216 Cabriolet, Honda D16 1.6 16v engine, 4 branch manifold, Garret T3 turbo at 8 PSi, Renault 21 intercooler, Collins BOV, Samco boost hoses, 345cc injectors, Apexi SAFC II, 17" Chrome BSA 264's, GMAX suspension, Scorpion decat pipe, Sportex twin 3" exhaust system, LOTS of ICE!!!!!!!
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