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COMMON MOT FAILURES

lucian

COMMON MOT FAILURES

Postby lucian » Wed Apr 04, 2012 1:35 pm

i was wondering if anybody wanted to give me a heads-up on common MOT problems with 1989 xj40s as mine is due in a month ....

cheers

Jaguarsport
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Re: COMMON MOT FAILURES

Postby Jaguarsport » Wed Apr 04, 2012 1:47 pm

Rust!
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katar83
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Re: COMMON MOT FAILURES

Postby katar83 » Wed Apr 04, 2012 1:53 pm

Rust Rust Rust!
I would say most common are bulkhead near the brake servo - failure, where the floor meets the sills, front to rear - any crusty bit - failure. Chassis square sections around jacking points and floors - any even small holes - fail.
Brake pipes, exhaust, power steering leaks - fail, all typical for all cars really.
Apparently rear brakes are hidden enough to be difficult to spot, so front brakes only need to be in tip top condition. Brakes in general - sticky calipers might be a failure due to imbalance.
Bulbs and digi dash warnings - failure.
And the most important - more rust :)
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Re: COMMON MOT FAILURES

Postby Equinoxstudios » Wed Apr 04, 2012 2:38 pm

Sorry, did we mention rust?
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old del boy
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Re: COMMON MOT FAILURES

Postby old del boy » Wed Apr 04, 2012 2:52 pm

A car that's twenty three years old could fail on just about anything , all depends on how much maintenance it's had over the last few years really , apart from the obvious rust , floors and where they join to the sills seem to be a real favourite , i'd say brakes , particularly worn out discs and rusted brake lines , bushes and wheel bearing play keep cropping up too .

Another thing to check on the older models is the door locks , you must be able to open them from the outside , and from this year on there must be no warning lights alight on the dash , best to get it up in the air and have a good look around underneath , see if you can spot anything untoward before you take it for a test ;)

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Re: COMMON MOT FAILURES

Postby naki_k » Wed Apr 04, 2012 4:04 pm

Equinoxstudios wrote:Sorry, did we mention rust?

:lol: that is a distinct possibility! i'd wire brush, and treat any rust, on all the fuel lines and brakes lines if theres even a hint of corrosion, as it will be picked up on.

i assuem your 89 is 3.6 or 2.9? (4.0 came in late 89 though)
i agree it could be anything really. its always a good idea to go around it and do you "own mot".
the latest one as del says, is this warning light thing. with digi dash cars it seems to be not is there a wanring on, but how many :?

check for play in suspension bushes and wheel bearings.

obviously check and lights work, including rear number plates lights and brake lights, which are often forgotten but still a fail if they are blown.
hand brake should operate after 3 clicks.
uneven brake balance is another classic, especially on cars that maybe are not driven that much?. my sov was borderline at last years mot. due to slightly sticking caliper pistons.

headlamp direction seems to crop up quite often too. theres bit in the haynes about how to set it.
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Re: COMMON MOT FAILURES

Postby nlcrane » Wed Apr 04, 2012 5:03 pm

Over here (and I suppose that it is the same in the UK) there are garages who specialise in PRE MOT testing. They run through a check sheet on the motor, fix whatever needs fixing and even give a guarantee that if something fails, that they had previously passed as good, they will fix it free of charge.
Another thing that seems to work is to send the missus with the car on the day of the MOT, I think that she is so talkative that the mechanics stamp everything as being good just to get her out of there. ;)
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lucian

Re: COMMON MOT FAILURES

Postby lucian » Wed Apr 04, 2012 7:52 pm

well i think that the chassis rust is sorted.... service history that i got with it shows it failed its last mot for front, rear,left and right chassis corrosion,,, same mot place passed it 3 days later with no advisories and when i look under the car its all been undersealed ..... tapping arround with a small hammer i cant find any weak spots so im asuming the previous owner had it sorted (altho theres no recipt )

there is a little seepage on the main hose from the power steering filler (hoping this just needs the jubalie clip tightening)

exhaust seems ok with 1 or 2 tiny leaks that a welder could make fast work of sorting,

2 front tyres have cracks between the treads so need replacing,

only warning lamp is "brake pad low".. the front ones are new (done for last mot) ive looked at the rear ones.... may as well be none there lol

thats all ive identified,,, think they are all fails but not to pricey to fix

lucian

Re: COMMON MOT FAILURES

Postby lucian » Wed Apr 04, 2012 7:58 pm


kamilb1998
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Re: COMMON MOT FAILURES

Postby kamilb1998 » Wed Apr 04, 2012 8:07 pm

lucian wrote:
2 front tyres have cracks between the treads so need replacing,





I really do hope you haven't got the metric wheels - £279/tyre.