Spluttering - UPDATE 04/07

[Alex]

Must've been having a wood for the trees moment last night, plug 4 wasn't on properly. Never work on a car when tired.

Ticking noise is now gone and the car seems ok at the moment, but it's still spluttering a bit at full load and low revs. Definitely not as bad as it was on Sunday.

Gonna go down to a meet in Peterborough to see how it is. Still hoping this is a shit fuel issue.  

I'm in Stamford by the way...

[vwmk3jon]

im not far away if you need to borrow anything

[Alex]

Thanks guys

Took it down to Peterborough and back (30 miles, ish) and it's pretty much ok. Getting a bar of boost, and it's taking off down the road well. Still kicking a bit under constant throttle though, and sometimes it's burbling and bogging down under full throttle. It's idling fine.

Bit of a dilemma really, I wanted to take it back to Cardiff on Friday as I'm off to see my folks. Three and a half hours of missfiring G40 will steadily erode my sanity, but I'm trying to decide whether to just take it and run the tank down again so it's completely full of fresh fuel.

Trouble is, I'm taking Caroline. She won't be amused if we break down.

The noise it's making sounds like a burble, like a Subaru exhaust note but sped up and higher pitched, if that makes any sense. Unburnt fuel coming out of the exhaust perhaps?

So is it running rich maybe? Would that make it bog down? Could it just need a tune up?

Or am I being optimistic...

I'm down to dizzy and coil pack if I'm replacing ignition parts.

If it's fueling, would a dying CO pot cause it to burble and bog down?

[PeteG40]

do you run an Air fuel ratio meter? if so - whats that saying?

could be the coil you know - i've known newish ones go a bit shit!

[Alex]

Plugged it in and it says it's running fully rich, but then you never can fully trust a Duostyling AFRM.

That said, it was working before the last lambda broke last year. So who knows.  

I'd prefer it to be a coil issue than a dizzy issue. It's a cheaper fix.

[PeteG40]

if its running well rich - could be overfuelling and you could have  a shit lambda probe.  where was the probe from?

[Yoof]

Lambda is ignored at WOT...

[samg40]

Christ I'd never have one of those duostyling guages near my car again. Shame really as they were a brilliant solution.

[Alex]

Lambda is second hand from here, did try unplugging it on Sunday and still had the same problem, don't reckon that's at fault but it was fitted a week or so before it started acting up.

And yeah this is my third Duostyling gauge. But again, doesn't seem to matter if it's plugged in or not. I've started running it since the problems started, and tried unplugging it on Sunday.

Need a neat place to fit a wideband, or a neat wideband display (a square one)

[PeteG40]

Lambda is ignored at WOT...

true - but it dont appear to be working - unless the gauge is shit (which they are)

i'd try another coil

[Alex]

Think I might try just buying a coil and dizzy. Stick it on the credit card and worry about it later.

TBH it's the time of year where I want to be using the Polo every day. I drove the Passat back to Cardiff on the weekend and missed the G40 all the way. At the moment it's just sat in my garage doing nothing

Likelihood of it being ignition related...? Personally I reckon it's dumping unburnt fuel out of the exhaust, hence the burble. If it was running really lean would that make a different noise?

[PeteG40]

there was a bloke selling pattern dizzys on ebay for about £50 delivered - no idea of the quality mind..


I have a spare g40 dizzy if you wanted to buy...

[Alex]

How much, and does it definitely work?

EDIT - sorry that makes it sound like I'm expecting you to rip me off, I know you're not...

[Alex]

Just called GSF - they do three different coil packs for the G40. A basic unbranded one for £25, something in the middle (Beru probably) for £36 and Bosch at the top for £45.

But they don't sell distributors. That means getting my ass raped at the stealers if I want new.

Hit me Pete, what are you after for the dizzy and what sort of condition is it in?

[PeteG40]

it is on a running car now... if you wanted me to run it on my car and time it up and use it for a week - i can do!

make me an offer mate!

search coils on ebay and ask them the brand - quite a few on and berus will be fine