My M30 conversion

Sat Dec 17, 2011 11:15 am

Have you checked the seal round the front cam wheel cover. Might be worth have a listen with a tube for air leaks there.

Sat Dec 17, 2011 2:10 pm

Does the idle stay in the same rev range, ie going wub wub wub wub wub and the car rocking slightly.

Or do the revs rise up and down like this.

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/\/\ this was my M30 a couple of years ago and it was the AFM at fault.

Sun Dec 18, 2011 7:17 pm

Thanks for the replies

Compression test checked out fine
Not sure how to test AFM, will have search on how to do that
Not checked the cam cover seal, will do that
ICV resistances checked out fine

The engine will start straight away, splutter a bit around 500rpm, then pick upto about 1200 shortly, before dropping down to nearly stalling, and then back upto 1200. The classic sign of an airleak somewhere afaik?

Got 3 more days at work and then I'm off for Christmas so I can try and sort this out and get the f'ing thing MOT'd!

Sun Dec 18, 2011 11:52 pm

It will be quite a big air leak for it to do that, what happens when you run it with the ICV unplugged?

Ive got a link somewhere how to test the AFM ill post it up when i find it.

Sun Dec 18, 2011 11:59 pm

http://www.e30zone.net/modules.php?name ... highlight=

Although this only tests whether the ECU is getting the right signals, the flap could be too loose (or too tight like mine was)

Mon Dec 19, 2011 12:32 am

Check out the rocker cover, I had a leak at the front causing me problems, and it was only noticable when I took it off.

Tue Dec 20, 2011 8:41 pm

Got a rocker cover gasket and inlet manifold gaskets being delivered tomorrow in case I need them, and lots of new things to test over Christams thanks to all the suggestions

Fri Jan 13, 2012 8:20 pm

Well, I haven't even lifted the bonnet of the car since my last post, just haven't got the time at the moment! Car is being booked into my dad's mate's garage in the next couple of weeks to get sorted and MOT'd so will hopefully finally be finished soon!

Mon Feb 06, 2012 11:27 pm

Any news?

Tue Feb 07, 2012 6:25 pm

Should be going into the garage next week all being well! Had my old touring I needed to get rid of first and now that's gone I can get the car picked up

Fri Feb 10, 2012 8:06 pm

This is beginning a very long project with no driving fun yet. Hope it gets sorted soon fir you.

Wed Feb 15, 2012 6:14 pm

Thank you mate, I know it has dragged on for ages, and is so close to being finished! Car is still at my place so no progress yet

Wed Feb 29, 2012 8:10 pm

It's booked in to go on Saturday morning, got round to it at last!

Thu Mar 08, 2012 8:24 pm

Latest on the car is the idle seems to have settled down a fair bit after being left running for a while, still slightly lumpy though. It apparently is backfiring now and again when revved, and thoughts are possibly a sticking injector leading it to overfuel. Anyone got any other ideas what could be causing this or does that sound like the problem?

Thu Mar 08, 2012 10:54 pm

What ECU are you using - the early 150 or the later 179?

The earlier one can be somewhat unreliable, due to the twin-PCB design.

Fri Mar 09, 2012 12:01 am

Speedtouch wrote:What ECU are you using - the early 150 or the later 179?

The earlier one can be somewhat unreliable, due to the twin-PCB design.

Agreed, My 150 was poo

Fri Mar 09, 2012 7:01 pm

Im running the later ECU. I have borrowed a spare one that I can try to see if that makes a difference

Wed Mar 21, 2012 1:42 am

Hi Guys......... just found yr thread/post.......... mine is also hunting all over the place and can't find the problem so am now waiting in anticipation to hear what the problem is with yours. regards
Gus

Wed Mar 21, 2012 1:42 am

Hi Guys......... just found yr thread/post.......... mine is also hunting all over the place and can't find the problem so am now waiting in anticipation to hear what the problem is with yours. regards
Gus

Sat Mar 24, 2012 6:56 pm

Should have more news on it this week

It's being looked at whenever there is a spare half hour in the workshop as I'm in no major rush to get it done (but I really can't wait to drive it!)

Wed Apr 04, 2012 1:29 pm

Took it for a quick drive today, still not running right, but once the engine clears itself it goes like fook

Lit up the back tyres in 2nd on part throttle where the road is a bit greasy, caught me by surprise a bit! I was impressed with how freely the engine will rev for such a big lump, guess the light flywheel makes a big difference

As long as the running issues don't mess up the emissions then there should be an MOT on it in the next week or so

Wed Apr 04, 2012 2:27 pm

Wed Apr 04, 2012 3:26 pm

Thu Apr 05, 2012 7:33 am

At last nearly on the road.

Thu Apr 05, 2012 3:32 pm

I know, not long now! It's only taken about 18 months....

Thu Apr 05, 2012 3:38 pm

I'm starting mine soon

Thu Apr 05, 2012 3:50 pm

I thought you already had an M30? Or you doing another one?

Thu Apr 05, 2012 3:52 pm

Doing another one, the chromie

With M88 throttle bodies lighten flywheel, K&W Full suspension, rear and front strut braces, Hartge Splits, etc.................

Thu Apr 05, 2012 4:03 pm

Sounds good! I nearly bought some of those throttle bodies a few months back, but then thought it might be wise to get the car on the road first!

Thu Apr 05, 2012 4:10 pm

That's a good idea.

Sat Apr 14, 2012 10:59 am

Went for MOT yesterday, nothing too major wrong with it although it didn't pass. Hydrocarbons obviously high due to the missfire, a few lights not working, handbrake not that good, and one of the front calipers needs freeing up a bit. So nearly there!

When I get a chance I'm going to get the injectors out and send them off for a refurb, and test the AFM and a few other bits.

Sat Apr 14, 2012 11:54 pm

How much over were the emissions? could you lean it out with the allen screw on the AFM?

Clockwise richens it up and anticlockwise will lean it off, if you have undone the screw till it comes out your next step is the spring in the AFM.

Pop the black plastic cap off and mark the cog so you can set it back to where it was originally, twist the cog to tighten the spring (ie making the flap harder to push open) iirc its anticlockwise to tighten it up on M30's, this will lean it off.
Id click it two notches and see what it does, take you ten minutes and cost you nowt.

Whats your list of things new/tested? ie Dizzy, leads, rotor, CPS, TPS etc....

Sun Apr 15, 2012 6:00 pm

I'm not sure, my dad took the car over for me. The high hydrocarbons are unburnt fuel because of the missfire, you can't really adjust anything, just need to sort the missfire

On my list to do is check AFM and TPS, and get the injectors recon'd. Dizzy cap/rotor arm are new, blue temp sensor and CPS are new, HT leads tested fine for resistance, plugs are new.

Sun Apr 29, 2012 4:43 pm

Nice bit of progress this week, the little bits and pieces (washers, bulbs etc) that needed doing for the MOT are sorted. Also I've taken the inlet manifold off (what a nightmare it is getting the bottom row of nuts off!) to fit new inlet manifold gaskets, and got the injectors out ready to be sent off for reconditioning.

Also fitted new front wheel bearings, ready to fit my WMS brake setup

Mon Apr 30, 2012 4:39 pm

New inlet manifold gaskets fitted, and manifold back on

One of the old inlet manifold gaskets was a bit suspect as I think you could see an area where air had been getting in, hopefully that is the last thing needed to sort the running problems for good!

Injectors sent off this afternoon, hopefully they will be back by the weekend so I can get it running again, and fit the new brakes and LSD I've got, and then it is time for some trackdays!