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Old 16-01-12, 06:33 PM   #1
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Exclamation Hard to start 307...

Hi guys,

Have a 2004 307 that has become very hard to start. It's a 136bhp 2.0 hdi xsi.

I got it in June 2010 and have had the DPF removed due to chugging problem but a couple of months back it started to become hard to start.

It starts but as soon as it does it conks out again.

Has taken up to 34 attempts of this in the past (was a very cold morning) before she starts and then I have to have my foot on the accelerator to make sure I get enough revs on because if I don't it would never start. On a warmish morning I could get in and it'll start first attempt.

Have replaced fuel filter thinking that may have something to do with it but no luck.

I have PP2000 and it's not throwing up any faults and have tried seeing what mbar I get whilst cranking but PP drops out when says no connection when it's cranking.

Any ideas guys because it's doing my head in.

Davy

Last edited by the_watcher87; 16-01-12 at 06:35 PM.
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Old 16-01-12, 06:39 PM   #2
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are your glow plugs working properly?

also

is the fuel system keeping its pressure ie no air getting in.



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Old 16-01-12, 06:42 PM   #3
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Quote:
Originally Posted by john_h View Post
are your glow plugs working properly?
Not sure, how can I check?

Quote:
Originally Posted by john_h View Post
is the fuel system keeping its pressure ie no air getting in.
How can I check this also?
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Old 16-01-12, 06:53 PM   #4
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ive never tested the glow plugs myself, but basically you disconnect them, pull them out and reconnect to battery and they will glow if working properly. - confirm this first

also you can check for air in the system by looking into the priming bulb (if fitted) on the filter...should be fuel only, no bubbles.



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Old 16-01-12, 07:01 PM   #5
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To test the glowplugs, disconnect the wiring to them, now use a multimeter on ohms setting, one probe on the plug wiring end and one to earth a good plug should give around 5 ohms readout.



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Old 19-01-12, 07:58 PM   #6
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Haven't had a chance yet to test the glow plugs. Can anyone tell me where they are?

Also I forgot to add this to my first post. As soon as it starts if I turn the car it will start first time no problem and will be like this the rest of the day.

For example, I start work at 3.30pm. Car is a pig to get started before I go. I finish around midnight and go out to start car. Starts first time no problem but if I go out at 8am the next morning it'll be a pig to start again.

Can't understand it!?!?
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Old 19-01-12, 08:33 PM   #7
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did it start doing this when the weather got cold (ish)?



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Old 19-01-12, 08:35 PM   #8
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ive just spotted a thread you made about stuttering, i havnt read it yet so i dont know what it says...but if the car is hard to start and it stutters could well possibly be fuel pressure...air getting into the system somewhere.



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Old 19-01-12, 09:49 PM   #9
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Quote:
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did it start doing this when the weather got cold (ish)?
Yes mate.

Quote:
Originally Posted by john_h View Post
ive just spotted a thread you made about stuttering, i havnt read it yet so i dont know what it says...but if the car is hard to start and it stutters could well possibly be fuel pressure...air getting into the system somewhere.
Don't worry about that, that was when I first got the car. Was resurrected by someone else. Long sorted with a DPF removal and remap.
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Old 20-01-12, 10:01 AM   #10
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yeah no worries, like i say i never read it

anyways if it started when the weather got cold, does sound like glow plugs.



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