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More trouble 00 MPI

Posted: Wed Feb 03, 2010 8:56 am
by smur89
Mini won't start. Sounds like it's trying to, but just splutters outstraight away. Don't have a clue what might be up with it, it started grand only 60 seconds before! Had to get it towed home, tried it this morning, still no joy. Any ideas lads? Would appreciate it

Re: More trouble 00 MPI

Posted: Wed Feb 03, 2010 10:48 am
by miniireland
try the cut off switch under the bonnet for a start

Re: More trouble 00 MPI

Posted: Wed Feb 03, 2010 11:18 am
by smur89
miniireland wrote:try the cut off switch under the bonnet for a start
sorry, shoulda said I tried that first!

Re: More trouble 00 MPI

Posted: Wed Feb 03, 2010 12:11 pm
by coop
Does the fuel pump prime for 3 secs with the ignition on? if it doesnt check the fuse. Also has the fuel filter ever been changed

Re: More trouble 00 MPI

Posted: Wed Feb 03, 2010 12:25 pm
by smur89
coop wrote:Does the fuel pump prime for 3 secs with the ignition on? if it doesnt check the fuse. Also has the fuel filter ever been changed
not sure what you mean by " does th fuel pump prime " ... Fuel filter was changed in November when i had it serviced.

Re: More trouble 00 MPI

Posted: Wed Feb 03, 2010 12:47 pm
by coop
When you turn the ignition on you will hear a whine from the boot, which lasts for 3 secs and pressurises the system with fuel

Re: More trouble 00 MPI

Posted: Wed Feb 03, 2010 12:54 pm
by smur89
coop wrote:When you turn the ignition on you will hear a whine from the boot, which lasts for 3 secs and pressurises the system with fuel
Ok, cool, heading home on lunch in a second and will check for that. You reckon if i dont hear that it might be the fuses? Multimeter job?

Re: More trouble 00 MPI

Posted: Wed Feb 03, 2010 1:23 pm
by coop
smur89 wrote:Ok, cool, heading home on lunch in a second and will check for that. You reckon if i dont hear that it might be the fuses? Multimeter job?
Well if the pump doesnt make any noise then it could be the fuse (look in the handbook for the fuses location), wiring (a purple/white wire runs from the fuel cut off switch in the engine bay through the bulkhead and along the floor to the fuel pump in the boot) or worse case would be a broken fuel pump

Did you have the dash out?

Re: More trouble 00 MPI

Posted: Wed Feb 03, 2010 1:30 pm
by smur89
smur89 wrote:
coop wrote:When you turn the ignition on you will hear a whine from the boot, which lasts for 3 secs and pressurises the system with fuel
Ok, cool, heading home on lunch in a second and will check for that. You reckon if i dont hear that it might be the fuses? Multimeter job?
no whining noise when i turn the key

Re: More trouble 00 MPI

Posted: Wed Feb 03, 2010 1:37 pm
by smur89
coop wrote:
smur89 wrote:Ok, cool, heading home on lunch in a second and will check for that. You reckon if i dont hear that it might be the fuses? Multimeter job?
Well if the pump doesnt make any noise then it could be the fuse (look in the handbook for the fuses location), wiring (a purple/white wire runs from the fuel cut off switch in the engine bay through the bulkhead and along the floor to the fuel pump in the boot) or worse case would be a broken fuel pump

Did you have the dash out?

Nope no dash out. Looking in the haynes manual as I write t
his!

Edit: none of the fuses look damaged at all. Tried disconnecting and reconnecting the wire from the cut off switch (the yellow block thing).

No idea what I'm doing really!

Re: More trouble 00 MPI

Posted: Wed Feb 03, 2010 2:57 pm
by coop
Did the fuel pump make a noise when the ignition was switched on?

Re: More trouble 00 MPI

Posted: Wed Feb 03, 2010 3:41 pm
by smur89
No, there was no noise, I know the noise you mean, just didn't know what it was.

Re: More trouble 00 MPI

Posted: Wed Feb 03, 2010 5:54 pm
by coop
smur89 wrote:No, there was no noise, I know the noise you mean, just didn't know what it was.
Im afraid it sounds like the fuel pump has broken, although it might be worth checking the wiring, starting from the relay pack in the engine bay the fuel pump wire (brown/grey) goes to a 10 Amp fuse in the passenger compartment fusebox at position C7, then onto the inertia switch and emerges as purple/white wire which goes to the pump (Look behind the passenger side air vent for the wire).

Re: More trouble 00 MPI

Posted: Thu Feb 04, 2010 10:23 am
by gareth
That yellow block thing you talk about is not the fuel cut off it is a relay. i'd say it may just be the cut off as it was very sensitive on that motor. Beside the yellow relay is a rubber topped button. Either red or black i cant remember. Press it and hopefully you will feel a click. I'm sure some one who has a mpi near them will post a pic highlighting where the button is for you. i would only i only have old carb minis here right now,

Re: More trouble 00 MPI

Posted: Thu Feb 04, 2010 12:06 pm
by smur89
gareth wrote:That yellow block thing you talk about is not the fuel cut off it is a relay. i'd say it may just be the cut off as it was very sensitive on that motor. Beside the yellow relay is a rubber topped button. Either red or black i cant remember. Press it and hopefully you will feel a click. I'm sure some one who has a mpi near them will post a pic highlighting where the button is for you. i would only i only have old carb minis here right now,
oh I know about the switch, had tried that as soon as it acted up but no joy. When I followe the wire from the switch (purple) coop was talking about I thought it went into the yellow block. I may just tow it to a garage this afternoon as I don't have time (daylight) to look into it myself with work. And would really like it back running again for the weekend.

Re: More trouble 00 MPI

Posted: Thu Feb 04, 2010 11:28 pm
by keith

Re: More trouble 00 MPI

Posted: Fri Feb 05, 2010 8:26 pm
by smur89
Thanks for the link keith... had already left it into your man by the time i saw it though.

Turns out the cut off switch is dodgey. He just bypassed it. He said this wassafe enough as its connected to a fuse anyway...?

Re: More trouble 00 MPI

Posted: Fri Feb 05, 2010 8:47 pm
by coop
smur89 wrote:Thanks for the link keith... had already left it into your man by the time i saw it though.

Turns out the cut off switch is dodgey. He just bypassed it. He said this wassafe enough as its connected to a fuse anyway...?
Glad you got it sorted, it is connected to a fuse and the fuel pump, so its safe enough. I would replace the cut off switch though

Re: More trouble 00 MPI

Posted: Fri Feb 05, 2010 10:41 pm
by smur89
coop wrote:
smur89 wrote:Thanks for the link keith... had already left it into your man by the time i saw it though.

Turns out the cut off switch is dodgey. He just bypassed it. He said this wassafe enough as its connected to a fuse anyway...?
Glad you got it sorted, it is connected to a fuse and the fuel pump, so its safe enough. I would replace the cut off switch though
Thought that would be best alright, ill get it replaced eventually.

Thanks for all the help coop. much appreciate

Re: More trouble 00 MPI

Posted: Sat Feb 06, 2010 12:01 pm
by woody
Most things like cut out switches fuses seatbelts airbags are "safe enough" untill you need them. :!: