24 replies to this topic

[bigmotherwhale]

there is the red and the green hoses at the quick connect that joins to the metal fuel pipes, i think thats what he means

[nicksuth]

there is the red and the green hoses at the quick connect that joins to the metal fuel pipes, i think thats what he means

Doh !!!!

[attachment=85116:av_964.gif]

[dennisb]

May just have solved the problems with the odd idle and flat spots...

I noticed that my fan was sometimes coming on as soon as I started the engine. Looked into it and discovered that Rover made a modified lead to connect to the Temperature sensor. This lead has a habit of coming loose, making the fan run, and telling the ECU the engine's too hot and to do something about it. My car hadn't had the mod. carried-out for some reason.

Swapped the lead for the modified one the other night. 5 minute job. Now the car has a perfect even idle, no flat-spots anywhere in the rev range and generally seems a bit more lively. Oh yes, and now the fan only comes on for a minute or 2 in traffic jams.

Result!

[nicksuth]

Good to hear you solved the problem.

It's a bit of a "Love / Hate" thing with the MPi, eh ???

[dennisb]

Agreed. Although, more love than hate. when they're on-song they're great wee machines! Just a bu**er when things go funky....

[tony kenobi]

Have been away for a while, but finding the above info regarding the pressure for my regulator VERY useful!
Have removed the thing altogether, will try it off, then refit to compare.

[nicksuth]

Have been away for a while, but finding the above info regarding the pressure for my regulator VERY useful!
Have removed the thing altogether, will try it off, then refit to compare.

Aye Up "TK" I thought you'd emigrated !!!!!

I have now tweaked the PBV a bit more to 2.9 bar and on "blipping" the throttle it jumps to 3.6/3.7 bar (that's what the gauge reads!!!).


When set up on the Rollers, 2.6/2.7 bar was okay but there was still a very slight "flutter" on backing off at cruising speed, this last 1/4 turn has done the trick!!

However, fuel consumption has obviously suffered for this and I've been advised that I will probably have to back it off to 2.4/2.5 bar, or even a bit lower for the MOT???

How you doing with your Monster???

Edited by nicksuth, 04 July 2009 - 09:38 PM.

[tony kenobi]

LOL @ monster!

Aye, not too bad. Ive removed the regulator and im just sorting the lambda sensor and then time for a quick spin to see if there is any difference.
Though i think i still have a problem with it jumping out of 4th gear, which will mean an engine out job. This mini might never see the road this summer, but thats what happens.
Im working during the week so much, its trying to find the time. To be honest, i had considered selling it, or breaking it up for parts, but i think ill just work on with it.

[dennisb]

Update on this...

The cause of my problems has been traced to the exhaust manifold having the lambda boss on the middle pipe and very close to the head.

The standard manifold with the cast header has the boss where all 3 pipes meet giving a better average oxy reading... whereas the one I had readings only coming from one pipe, so a crappy average and altering the fueling too much for the engine as a whole.

Just in-case anyone's interested, the original manifold (with the single port lambda) was supplied by Wood and Pickett... the one I now have fitted is a Maniflow Stage 2 with the boss where the two outer pipes meet.

Car now going like a beeeacth with a very happy driver!


ps. The problem was traced and fixed by a member on here, Mike, so if you see this Mike.. Thanks very much man!!!

[nicksuth]

Good to hear it's "sorted" I was bloody ages sorting mine until we hit on the fuelling problem - you can now get it set up on the rollers and have it singing again