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Author Topic: engine running erratic idling 500 rpm or less  (Read 2260 times)

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mrgreen

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Re: engine running erratic idling 500 rpm or less
« Reply #15 on: 05 June 2011, 21:14:24 »

Quote
tried unplugging the new siemens maf sensor and still no joy.
One thing I did try was get the engine red hot and pour redex down into each cylinder and left it for 30 mins, the took rocker cover off and put a bit of redex on each valve whilst closed marking the level and left it for about 5 mins each time and hardly any dissapeared except for some which vapourised from the hot engine. When I reassembled and fired it up it sounded normal for a minute then dropped back down to its fluctuating 500 to 600 rpms. I'm gonna give it a good run on motorway later to see if that will cure it.
Im getting stuck what to do next. Also there's only a full circle on camshaft outer pulley and a half moon on timing cover and thats at about 10 o'clock.
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i'm geussing here as i am yet to do my belt (2000km overdue :()but i would say the moon and the circle would need to be in the vicinity of one another!! try getting the top lined up and see where they sit? but i'm still geussing at a burnt valve as that redex  may have sealed the valve enough to combust a few times, did you take your plugs out again and check them for wetness, i would start with the no.4! but i would definately get a compression check done at this point
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cooke1100

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Re: engine running erratic idling 500 rpm or less
« Reply #16 on: 05 June 2011, 23:01:51 »

Orded the compression tester from ebAy, so I'll post results next week and also priced up complete new valves head gasket and timing kit. Because if I stip head I might aswell change all that stuff.
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