Yes, sooooooo simple but soooooo vital!
What am I on about well....
As some may know I had a bit of a saga with my miggy;
A full service.....led to a faulty spark plug lead.......led to the replacement of the DIS pack............led to the replace of one of the middle exhaust boxes..........that led to the MOT and PASSING, but a rough engine idle being noted as I already knew; couldn't get rid of it, but knew it was an air leak around the plenum/ breathers area.
Replaced four 'O' rings, but still the air leak that made the car idle like a bad tractor, with everything running erratically, the exhaust system rattling like crazy, and the transmission when in auto 'D' trying one second to move the car forward, then not, then again! At normal speed though the engine ran beautifully.
So what was laying my super beast low, what major part/parts did I need now, after thinking still DIS pack and all the big stuff that could affect the idling? .....................it was this...............:
Yes, an special 'O' ring, but just an 'O' ring no less, part 90467543, that sits under the breather boxes on top of the plenum to seal the air outlet between the two!
So something so simple caused real headaches, constant investigation with bits repeatedly removed and replaced, and much frustration generated, with me believing at one stage it would never pass the MOT. A simple part, that I must have lost when cleaning the breathers, that frankly I had never noticed before on any of my miggies. But it brought my beast to its knees.
It has taught me yet again with car mechanics it is often the simplest of things that cause problems!
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Topic: Sooooo Simple.....but..... (Read 2356 times)