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13th February 2019, 20:01 | #1 |
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1996 Rover Mini question
Hi.
A non 75 question that could help out a friend. My friend has had this "P" reg Mini for a good few years. It has a very intermittent misfire, all the usual things have been tried over the years and TBH many things have been replaced umpteen times. It is the fuel injected version and as far as I know it has not had a T4 session or even if it can be T4'd He is prepared to travel to get a diagnoses, can anyone here help, if so I'll pass on the info. Many thanks.
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13th February 2019, 20:53 | #2 |
Been absent for a while…
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It can be T4’d using the blue lead. Being 1996 it will be an MPI. Misfire could be anything from plugs to leads to the coil pack. Plenty of mini specialists out there so shouldn’t be too hard to sort.
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13th February 2019, 20:59 | #3 |
Posted a thing or two
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Things you can do yourself - well he could anyway!
Check for water in the fuel tank - more common than you think. By removing and tipping out the contents of the fuel filter, running the pump into a bottle etc. Remove and hang the ecu up with the vacuum line facing down, preferably somewhere warm. Fuel has been known to condense in the vac sensor in the ecu. Put a dvm on the wiper of the throttle pot to measure the voltage as the throttle is slowly opened - it should sweep gradually upwards to 5? Volts from memory, no jumping about, just gradual change. Have a look at the pins on the big plug on the ecu for greening. Can't think of anything else. |
14th February 2019, 09:20 | #4 |
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Hi.
Thanks everyone. A bit more info...... The car is an MPI with twin injectors and doesn't have the vacuum sensor, perhaps that may be a clue or change the goalposts!!
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14th February 2019, 10:07 | #5 |
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Trevor, ikmsure paul (mininuts) will post soon. He knows his minis well.
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14th February 2019, 12:55 | #6 |
I really should get out more.......
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Has he considered a leak back test to check the condition of his injectors?
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14th February 2019, 19:19 | #7 |
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If you check out "The Mini Forum" they have a dedicated technical section for the later fuel injected classic Minis, loads of info and assistance on there.
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14th February 2019, 22:06 | #8 |
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Hi Trevor
Like said, could be a host of things alongside the obvious things One thing worth checking is the coil pack. I had a similar issue on my MPI Mini when I bought it, turned out to be a hairline crack in the coil pack which was virtually invisible. Apparently quite a few have failed in this way. Cost around £50 for a new Lucas one so, not too expensive to try. Probably not the cause but, also worth checking the fuel filter that is located on the rear subframe of all places These can be a nightmare to change due to corrosion so, they rarely get looked at......chances are, it’s on its original filter!
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15th February 2019, 08:46 | #9 |
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Don't forget the wiring loom around the inlet manifold can and does get damaged / breaks with age and especially with too much engine movement the wires can break.
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