Dave's SE - REBORN

93_Clubman · Postby **93_Clubman** » Mon Jun 08, 2015 12:00 pm

Dave, if you haven't already, & if it turns out to be CAS/CPS related, then check the CAS/CPS connector as they sometimes work loose - see irwin83r's post in following:
viewtopic.php?f=29&t=21462&hilit=cas&start=45
As well as his first post here:
viewtopic.php?f=29&t=67261

davekmoore · Postby **davekmoore** » Mon Jun 08, 2015 4:14 pm

Very kind offer from local SE owner coming this arvo so we can try out his CAS. Fingers crossed.

Magpie · Postby **Magpie** » Mon Jun 08, 2015 4:23 pm

Good news and good luck.

davekmoore · Postby **davekmoore** » Mon Jun 08, 2015 6:18 pm

Unfortunately the CAS is now eliminated. Towie to an auto elec on the cards tomorrow.

Magpie · Postby **Magpie** » Mon Jun 08, 2015 6:52 pm

In a way good news as you have done a lot of the checks that you pay the auto lec for.

davekmoore · Postby **davekmoore** » Mon Jun 08, 2015 9:23 pm

Did all the same checks again and now it seems there is only fuel to the rear cylinder.

Even then, surely that one cylinder would at least have an attempt at firing?

KevGoat · Postby **KevGoat** » Mon Jun 08, 2015 9:51 pm

I was trying to come up with something to say regarding your bad experiences with this car ... I just can't ...

edit: what I can say is I admire your persistence!!! I would have given up on it ages ago ...

davekmoore · Postby **davekmoore** » Mon Jun 08, 2015 10:41 pm

The irony is that I sell Mazdas for a living because they're such great cars but seem to have created a monster out of my own car.

davekmoore · Postby **davekmoore** » Wed Jun 10, 2015 11:06 pm

Well this is embarrassing! What I thought was just a light sooty deposit on the plugs, all of which showed a nice fat spark when out of the motor, was in fact evidence of fouled plugs which weren't providing enough spark when under compression :oops:

.

Plugs cleaned, problem solved, although it still ran like a pig for 5 minutes after it deigned to restart (ECU relearning maybe?).

Now I'm back working at my local Mazda dealer I only drive a few minutes to work unlike the 20 minutes previously. Combination of cold weather and short trips probs means fully rich all the way every trip on a setup that's presently too rich anyway hence the plugs never get a chance to clear themselves.

It clearly needs a proper tune, soon.

Turbo oil return pipe hopefully sorted tomorrow so should still make it to Broadford.

Apu · Postby **Apu** » Thu Jun 11, 2015 10:32 am

Sounds like it needs the old school Italian tune up!

davekmoore · Postby **davekmoore** » Thu Jun 11, 2015 1:17 pm

Apu wrote:Sounds like it needs the old school Italian tune up!

Exactly. Just as I used to do with cars with twin 40s!

davekmoore · Postby **davekmoore** » Sun Jun 21, 2015 2:33 pm

Soooo, the auto elecs cleaning the plugs solved the non-start issue. However, as I found out at Broadford, any kind of boost, or more than 25% throttle, made the poor thing misfire so much at 4,000rpm I felt I had to back off, when it would then run better, and just accelerate. Frankly though, it was less slow to change up at 3,500rpm! This didn't make for the best track day experience, as you can imagine. Did learn a bit about how to get a low (no) power car around a track though.

Since then I've ordered a spare CAS. Not installed it yet as subbing a known good one didn't solve the non-start issues. It'll live in the boot to avoid Murphy's Law being invoked.

Since Broadford all I've done is:

Let it nearly run out of E85 and filled with 98.
Swapped the very sooty (it needs a tune) NGK BKR7E plugs for an old set of Denso IK24s (the car should really have IK22s for under 16psi of boost. 24s are for over 16 according to Fab9, the COPS supplier). The top nut is removable from the Densos, so the coilover boots are a positive fit on them, whereas the NGKs are a very loose fit because the top nut isn't removable.
Put 1.0L of coolant in it when I noticed the heater wasn't providing any heat. The temp gauge stayed rock solid in the middle though.
Sworn at it a bit.
Sulked.
Threatened to buy a silver Golf Cab auto as a DD.

............. and I've just discovered the artificial 4,000rpm rev limit has gone and it runs properly again.

Now, this is Good, but I'd appreciate people's thoughts on whether there's something else lurking here in terms of an intermittent fault that I haven't solved.

Magpie · Postby **Magpie** » Sun Jun 21, 2015 3:04 pm

Dave based on your 'luck' I'm not game to suggest anything

You should get yourself a simple setup to swap fuels instead of letting one run out. However evrytime I ditch the 98 from the car the 7 year old wants his quad filled and the other half fills up the ride on and mower...

If the plugs are sooty then you could go a hotter plug, but by the sounds of it since you were not using the car normally the current plugs may still be suitable.

davekmoore · Postby **davekmoore** » Sun Jun 21, 2015 3:10 pm

Plugs sooty because it's running stoopid rich. It needs a tune.

The Flex Fuel sensor auto switches between E85 and 98.

Magpie · Postby **Magpie** » Sun Jun 21, 2015 3:33 pm

I have the same setup, flex fuel as well. However I find it easier to just dump the E85/98 out and put into jerry cans rather than have a batch of fuel that is mixed, despite the fact that the flex fuel can handle this.

When I go tothe track I make sure it is on E85 hence why I dump the fuel. I would hate to see what would happen if somebody at home grabbed the jerry can that had blended fuel in it. The rik is reduced because I use silver jerry cans for E85, red for 98 and yellow for diesel. I do have one black jerry can I could use for E85/98 blended fuel, I could also attach one of works information/danger tags to it

The plugs could be sooty yes because it is rich but also because it is missing so badly and not allowing the plugs to get up to the right temperature to burn off the deposits.

Regards