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Author Subject: Gti6 not starting
darkgti6

Seasoned Pro

Location: Bracknell

Registered: 07 Jun 2008

Posts: 1,361

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Post #26
Will be keeping an eye on this. Ive had a starting issue for around 2 years now. Sometimes it just wont fire on the first turn. Sometimes it does. When it doesn't fire first time it doesn't matter how long you turn it over it will never fire. Only when you stop cranking and try again will you have a chance of starting. Sometimes its like it will never fire even after 5 attempts then all off a sudden just starts. Doesnt matter if it's hot or cold either. Extremely annoying because its usually when someone is watching you pull away the thing wont start.

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Posted 17th Jul 2013 at 00:44
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,769

Status: Offline
Post #27
Double check the cam sensor is plugged in. Yes

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 17th Jul 2013 at 08:37
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rikky Pikey

Location: cheshire

Registered: 28 Feb 2004

Posts: 26,801

Status: Offline
Post #28
darkgti6 wrote:
Will be keeping an eye on this. Ive had a starting issue for around 2 years now. Sometimes it just wont fire on the first turn. Sometimes it does. When it doesn't fire first time it doesn't matter how long you turn it over it will never fire. Only when you stop cranking and try again will you have a chance of starting. Sometimes its like it will never fire even after 5 attempts then all off a sudden just starts. Doesnt matter if it's hot or cold either. Extremely annoying because its usually when someone is watching you pull away the thing wont start.


if i unlocked my 6 and got in straight away and turned the key, it wouldn't fire whatever or however many times i tried. if i stopped and took key out, put it back in, it'd work first time. i put it down to a delay in the immobiliser disarming. i would then just unlock it and wait 5 seconds before putting key in, and it'd start as normal every single time

come to think of it, my 406 v6 coupe did the exact same thing

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Posted 17th Jul 2013 at 09:17
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ryangti6

Seasoned Pro

Location: Pontypool

Registered: 01 Sep 2006

Posts: 1,839

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Post #29
It is quite easy on these to think you've put the manifold on properly but still have a big gap at the bottom. I'd loosen it back off and check it is flush with the head underneath.

I guess you are sure there is plenty of fuel in the car?

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Ryan
Posted 17th Jul 2013 at 09:23
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,769

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Post #30
I always leave mine until the mileage appears on the dashboard, instead of the service interval. This way, the fuel pump has had long enough to prime and I find it always starts. Having said that though, mine is now on aftermarket management, but still acts the same as when I was using Peugeot management. Yes

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2000 (X), Moonstone Love
Posted 17th Jul 2013 at 09:58
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darkgti6

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Location: Bracknell

Registered: 07 Jun 2008

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Post #31
rikky wrote:

if i unlocked my 6 and got in straight away and turned the key, it wouldn't fire whatever or however many times i tried. if i stopped and took key out, put it back in, it'd work first time. i put it down to a delay in the immobiliser disarming. i would then just unlock it and wait 5 seconds before putting key in, and it'd start as normal every single time

come to think of it, my 406 v6 coupe did the exact same thing


Interesting. As it happens I've experimented with different procedures for starting and have seen some improvement at times only for it to return back to being a pain. For example ive tried turning the key to second click and waiting etc like stan was saying and also turning to second click back to first then to second and attempt a start. All without success.

It is irritating more than anything. I take good care of her and when it fails to start first time if you have a passenger or onlookers I can imagine them thinking to themselves 'perhaps he should get it serviced'!

Whatever. The main thing is, ok doesn't fire on first turn every time but hey shes never let me down in 7 years of ownership. I have to remind myself now and then but would be great to find out whats causing it.

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Black T'99 Gti - may she rest in peace - written off in a shunt on the A329m
Posted 17th Jul 2013 at 11:50
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jake949

Newbie

Location: Corwen

Registered: 16 Jul 2013

Posts: 16

Status: Offline
Post #32
Ill check that its on properly when I get home, but I'm sure it is. Definately quarter of a tank in her. Really confused as to why its happening. Don't think it has an imobiliser as it was originally a 1.8xs so ecu was unlocked. Really starting to be a pain as I need the car for Monday and hopefully FCS. Cam sensor is definitely plugged in.
Posted 17th Jul 2013 at 12:42
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jake949

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Location: Corwen

Registered: 16 Jul 2013

Posts: 16

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Post #33
Any way I can test the ecu? Seems to be only other answer as everything else seems fine, a known working map sensor made no difference at all.
Posted 17th Jul 2013 at 16:53
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,769

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Post #34
So, we are sure it's *definitely* sparking? If so, you haven't fitted that manifold flush as if there is fuel and ignition, it will start.

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Peugeot 306 GTi-6
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Posted 17th Jul 2013 at 17:03
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jake949

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Location: Corwen

Registered: 16 Jul 2013

Posts: 16

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Post #35
Well last night when I removed all spark plugs one by one and out them against the head they would all spark so I'm guessing that they are fine. Doesn't even attempt to start now. Manifold looks like its flush, doesn't seem to be a gap between it and the head.
Posted 17th Jul 2013 at 17:10
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jake949

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Location: Corwen

Registered: 16 Jul 2013

Posts: 16

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Post #36
Come to think of it the spark plugs only seemed to be firing every like second or 2, even at turning over speed shouldn't it spark quicker?
Posted 17th Jul 2013 at 17:51
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,769

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Post #37
jake949 wrote:
Come to think of it the spark plugs only seemed to be firing every like second or 2, even at turning over speed shouldn't it spark quicker?


Not always, cranking speed is around 200rpm and not every cylinder fires on each crank. The firing order for these engines is 1-3-4-2, with 1 and 4 stroking at the same time and 2 and 3 stroking at the same time. Yes

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 17th Jul 2013 at 18:01
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jake949

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Location: Corwen

Registered: 16 Jul 2013

Posts: 16

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Post #38
Worth taking them all out at the same time and seeing if they all spark like that rather than one at a time?
Posted 17th Jul 2013 at 18:07
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jake949

Newbie

Location: Corwen

Registered: 16 Jul 2013

Posts: 16

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Post #39
Right, checked all plugs again, pulled ecu one off and replaced. Turned car over and it started to fire better than last few times. So kept the starter going for 30odd seconds and it started but ran like s**t. Kept the revs at 3k for a few minutes and now she's running fine? Been sat outside the house idling for 15 mins without cutting out. Seriously confused now
Posted 17th Jul 2013 at 19:19
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,769

Status: Offline
Post #40
Sounds like it could have been flooded with fuel?

Either way, keep us updated. Thumbs up

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 17th Jul 2013 at 19:28
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bigbadbowen

Seasoned Pro

Location: Winchester

Registered: 21 Nov 2003

Posts: 13,753

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Post #41
Exactly what mine did when it had crap in the manifold ie shot ? You managed to clear it from the engine like I did then it runs fine - like mine did

I'm pretty sure that's the problem - but hey what would I know after owning over 20 Gti/rallyes

Smile
Posted 17th Jul 2013 at 19:28
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dangti6

aka JKshooter

Location: Taunton, Somerset

Registered: 15 Jun 2006

Posts: 10,308

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Post #42
You're suggesting it won't fire if it's expecting specs of grit to pass through?

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    • Posted 17th Jul 2013 at 19:51
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    bigbadbowen

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    Location: Winchester

    Registered: 21 Nov 2003

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    Post #43
    I'm suggesting if you fill it with shot it won't fire as no compression ?
    Posted 17th Jul 2013 at 20:04
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    jake949

    Newbie

    Location: Corwen

    Registered: 16 Jul 2013

    Posts: 16

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    Post #44
    Been idiling for a hour now and been for a 4 mile spin, no misfire or cutting out, glad its running but no idea what I did haha
    Posted 17th Jul 2013 at 20:07
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    mrdeey

    Regular

    Location: nearerthanuthink

    Registered: 14 Feb 2011

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    Post #45
    I would suggest that on the age of these cars , the sensors and sensor connectors will have some corrosion , disturb them just a little and then intermittent connection , has to be worth pulling them apart and cleaning the contacts

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    Posted 17th Jul 2013 at 23:14
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