My 6, update and plea for help

[Piercer]

Long time no whinge! But that's about to change.

Long story short, a new dizzy failed to resolve the issue. Several hours (and £400) later, the garage discovered the dizzy was incorrectly assembled. The eccentric was 180 degrees out!

So, they rebuilt that and fitted new fuel rails and off she went - Hurrah!

Drives well but is a bitch to start. Flooring the accelerator when turning her over stops the fuel injection and cures the starting issues. Diagnosis, leaky injectors - confirmed by the garage aftger putting a fuel pressure guage on the system. Not much we can do and there's a work-around so I'm going to live with that.... Or so I thought!

Coming home from London last night, she's flying Cruising comfortably in 3 figures (once off the M25 car park that is) until, all of a sudden, serious loss of power. I found that lifting off completely resulted in enough power to limp home at 60 ish but as soon as I put any pressure on the accelerator she bogged down.

Same through town (I'm glad I'm only 1/2 a mile from the end of the motorway!) all I could use was the first 1/4" of accelerator travel.

This morning, she won't start at all so I'm stuck. I've got rid of the spares MX6 and just had the Tipo towed for scrap so I'm down to one (non-running) car.

This is where I call on the good nature of you lot! I need everyday transport for the 40 mile (each way) commute to work so if anyone has a car I can borrow or buy very cheap (over £1500 spent on the 6 so far this year so I'm totally skint!) I'd be eternally grateful.

And..... More importantly, can anyone help with the problems with the 6? Ideas as to what the problem could be would be a start. I'm still thinking fuel rails, but haven't been able to check that. The behaviour suggests to me that she was flooding as soon as you open the throttle.

All that's left to say is...... Help!!

Thanks guys
K.

[Einstein]

Check the plugs to see if they are wet..

Pull the codes, if any.

Check for a strong blue spark
check dizzy cap, rotor arm and plug leads for damage.

check fuel line pressure at idle 30-36 psi (I know it's not possible at the mo)

Then it says to pinch the fuel return hose.. if the pressure increases quickly, check the FPR... if it increases gradually, check for blockage between pump and FPR
Does fuel pressure increase when revving.. if not, check FPR

It then goes on the say check EGR valve and solenoids.
Then check TPS,
and finally check for leaky injectors...

My guess is the injectors or FPR..

Hope this helps..


John

[Piercer]

Thanks John.

I've spoken to the garage and they've suggested it may have gone into limp-home mode. It's a feature on the RX7 etc and the behaviour is as the 6 was last night.

I'm going to clear the codes and check plugs etc now in order to try and get it to the garage where they have the means to investigate. They also have a loaner so my immediate transport needs are met.

Hopefully they'll be able to sort the curent problem, then the only issue is the slight leak on the injectors which can only be fixed by replacement. I'm looking at getting another set of rails but they could be just as bad. Wew'll see.

Now I have precious little time to get her moved so I'm off to get dirty.

K.

[Einstein]

Good luck Kev


John

[N0DDY]

This loss in power that you're describing isnt a misfire is it? It's just that I had similar problems with a set of faulty HT leads that I'd recently - at the time - bought.

[Piercer]

Now you tell me!! The first indication of a problem was loss of sparks. I replaced dizzy (with a new, incorrectly assembled unit!) and plug leads and caps but since then she's been running fine. I managed to get her transported to the garage over the weekend so hopefully but COP this afternoon I'll know what the hell is wrong. I'm still looking for fuel rails though as I know there's a slight leak in mine.

Fingers crossed while I debate whether to throw good money after bad or cut my losses and buy something else.

K.