HELP save my Rover

[Mr_Bo11ox]

Hey, My rover is playing up, can anyone advise?

 

I was caning it along today as I am wont to do, when suddenly I noticed it was slow as sh*t. I turned the radio down and established that at least one of the cyliders was not contirbuting to forward motion.

 

I had a quick look but could not see owt obvious.

 

When i got home i had a proper look and fouind it was running on two!!! I have driven it fropm leicester to Crewe on two pots!!! It will still cruise at 70, it just sounds like shit when you slow down enough to hear the enigne.

 

I have cleaned the plugs, all are sparking OK, but cyls 1 and 3 are just doing nowt. When you pull the plug leads off them it makes no difference to the running of the enigne.

 

Why would two pots go on the blink at once like that? Are the injectors fired in pairs? maybe an injector driver in the ECU has gone down.

 

Anyway its not reallly usable now, and the MOT only has a month to run. Any decent tips that help me get it going again with the minimum of expense could make the difference between life and death for this troublesome car.

 

SHITE SOS!

[Pillock]

http://forums.mg-rover.org/showthread.php?t=254953

 

Reckons there there's two coil packs, each driving a pair of plugs, on the later K-Series 25? Might it be the same sort of principle?

[whitevanman]

NOW... I'm a bit at a loss with fueling problems but from what I've learned in the last few weeks it could be of the following

 

Coil pack, see if the one covering the non running cylinders is warming up/ is there a spark ther?

 

swap the injector wiring around ie swap inj 1 for inj 2 apparently this should determine if the injector is working or if its a wiring problem

 

are the plugs wet on the non running cylinders

 

Crank sensor dirty?

 

put a screwdriver against the injector and hear if it's firing.

 

don't know if it will help or not..........

[ashmicro]

http://forums.mg-rover.org/showthread.php?t=254953

 

Reckons there there's two coil packs, each driving a pair of plugs, on the later K-Series 25? Might it be the same sort of principle?

Yep. Not cheap retail, mind. Unlikely to be CKP to be honest - they generally just die altogether.

[scaryoldcortina]

pots 1+4 off would suggest a coil pack, 1+3 seems more like injector driver to me. It's worth unplugging and replugging the ECU a few times, it is often just a dud contact on the plug.

[Station]

Is it the K-series? Has the belt slipped a notch or two? Put a blob of oil on each exhaust pipe on the manifold to see if they burn off.

It's probably nothing, I have a spare ignition thing which came on the side of the head if you need one.

 

As said, I have a dodgy connection on the CTS (located on the pipe next to the ex/manifold). You can touch it and it runs rough.

[Mr_Bo11ox]

Mine doesnt have coil packs, its too old! Its just got one ordinary cylindrical coil. Anyway it doesnt seem to be a sparky problem, plenty of sparks are available!

[scaryoldcortina]

so is it multipoint injected? In fact, which rover is it?

[Mr_Bo11ox]

Soz! its a Rover 220 SLi (M-reg)

 

It is multipoint injected, got the old Rover T-series 'oil diffuser' 16v effort.

[Cavcraft]

Have you done a compression test and is there a chance the HG has failed? No, I'm not taking the piss (Rover/HG) but if it's gone it might have started giving way around the cylinders you mentioned?

[Mr_Bo11ox]

I havent done a comp test and you might be right, having said that it just seems strange for 2 non-adjacent pots to die suddenly without warning. Theres no water in oil or oil in water and no water consumption.

[scaryoldcortina]

My guess is def. wiring failure then! check the loom plug where the injector harness meets the main loom (round plug, many pins..) and unplug/ replug the ecu. Also, the engine harness sometimes falls to bits. My diagram says pots 1 and 3 share an injector driver, but all 4 share the + supply (so it won't be that). Might be worth pulling the dizzy cap off and checking for tracking between 1 and 3 as well.

[Cavcraft]

If it were a wiring failure would he not suffer from sparking problems? I know fuck all about electrics and that's just a guess by the way.

 

Mr B: can you borrow a compression tester from somewhere, it's probably worth a bash to see what it throws up?

[scaryoldcortina]

No not necessarily. You only need 1 wire to fail to lose 2 injectors, and it happens to be the wire that carries the most current on 2 different plugs in the loom.

 

ps, I do do auto-electrics

[dollywobbler]

ps, I do do auto-electrics

That's a bad thing to admit to me. Could you please rewire my CX with wires that actually work? The electricity seems to keep falling out of the CX's wiring.

[Mr_Bo11ox]

Hey scary, do you have a wiring diagram you are share with me for this car? I mean just for the injector wiring really, as I think its the no.1 prime suspect in this carry-on. There doesnt seem to be a haynes available for it.

[scaryoldcortina]

Fraid all I have is pinouts, no loom diagram (they don't seem to do them anymore either..) but thankfully most 90's injection systems are pretty generic.

[Mike D]

Fuggin Nora Bol, this Rover seems to have it in for you, even after all your hard effort and praise of it. Good luck getting it sorted!

[ashmicro]

Bollox, PM me your email address, I have a Rover/MEMS scan from the Draper Fuel Injection book, and I can send it to you as an attachment.

[Mr_Bo11ox]

Well I have been arsing around with this car today, I swapped the injector plugs from pots 3 and 4 to see if the non-firing pot moved around, but it didnt - no.3 still would not fire, making me wonder if there is a deeper mechanical issue here. Anyway nowt can happen till next weekend now, when i will check the wiring properly with a multimeter and do a compression test.

 

I checked the spark as well, its there although looks a little feeble, the 1800 Crab with its Lucas gubbins can generate a brighter fatter spark.

[Station]

I know it's K-series, and MGF, but it might be worth checking here, they have all the wiring diagrams, knowing Rover they'll have the same electrical stuff, maybe.

 

http://www.mgfcar.de/

[Station]

Or I could post you the Rover service manual on CD.

GR8 4 WIERING DYAGRAMS 4 UR REVOR.

[Lankytim]

Hey, Bol.

 

Print this pic off and show it to your Rover whenever its misbehaving. Hopefully it will scrare it into working correctly.

 

[Pillock]

Is that even real? I thought cubing machines like that were a Hollywood invention. Is that a whole car in there, engine and all?

[Lankytim]

I dunno if the lumps still in there, I nicked it off the net, but yes cubing machines are real and they can squash engines and all!

[Angrydicky]

What was it? Fiat Uno?

[scaryoldcortina]

Nar, that's a rover 214/216 (check the 16v badge...)

 

I'll try and get some vid of the crusher in full steam next time it visits the yard opposite me.

[Mr_Bo11ox]

YO, I have been on the case of this Rover today, turns out pots 1 and 3 have lost all their compression!!!! Not even a tiny chuff on the compression tester for some reason. What on earth would cause that? Anyway i'm considering the engine to be scrap.

 

I have been sorting out a workshop as well, if that comes off I think I might see about fitting a replacement engine as I am struggling psychologically with the idea of just weighing the damn thing in.

[Station]

I wonder if the belt has slipped!

[scaryoldcortina]

I wondered that too, but it runs on the other 2 pots so I'd say not likely. Best whip the head off and look, Mr B.