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Old 01-02-15, 08:35 PM   #1
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Default peugeot 306 diesel starting issues

I have a 1995 Peugeot 306 diesel that I have trouble starting from cold/hot I have changed fuel filter and glow plugs and made sure there's a 12 volt supply to them all is fine but it takes ages to start once its started it blows white smoke out which smells like unburnt diesel even from warm it is difficult to start once its started it runs perfect doesn't use any oil or water can anybody shed any light on the problem please
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Old 03-02-15, 05:30 PM   #2
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Sounds a bit like air is getting in the fuel line.
Had a diesel that had very similar symptoms difficult to start, left for 10 mins once it was hot and the same thing all over again.
There probably won't be any signs of fuel leakage.
However have you tried the double/treble ignition on/off then start up, if this improves things then look at the glow plug relay and even though you've just fitted new plugs take them out and test them all across the battery looking for a lazy plug
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Old 15-02-15, 09:19 PM   #3
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fitted new injectors checked glow plugs still no different going to change injector pump if I can find one
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Old 28-02-15, 04:05 PM   #4
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Have you changed the leak off pipes between the injectors?


Cheers.
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Old 28-02-15, 06:38 PM   #5
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Does sound like air in the fuel. Check filter housing seal and also the priming bulb - the latter can develop pinhole leaks which while not big enough to piss diesel everywhere they are enough to allow air in while the car is stood.
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Old 02-03-15, 08:27 PM   #6
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Quote:
Originally Posted by Toady View Post
Have you changed the leak off pipes between the injectors?


Cheers.
changed leak off pipes and fitted a one way valve in fuel line but still blowing unburnt diesel out the exhaust
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Old 02-03-15, 09:14 PM   #7
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Have you checked the valve clearances? These tighten up in time and can hold the valves slightly open, causing drastic loss of compression and very poor starting. It will also cause unburnt fuel (white smoke) to be ejected from the exhaust.
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Old 02-03-15, 09:44 PM   #8
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Yes, worth checking the valve clearances as Brilec advised.

Has this problem just started?

Did you change the fuel filter before or after the problem started?

Even with a one way valve the fuel can still syphon back to the tank via the return if the leak off pipes aren't air tight, so double check them, not forgetting the one that goes to the pump and also the blanking piece on the last injector.

Smearing grease around the joints is a trick used to help trace air leaks.



Cheers.
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Old 03-03-15, 10:09 AM   #9
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100% sure glow plugs are ok? I replaced mine on a 306 a few year back and started getting no end of trouble. I replaced loads including new injectors. As a last resort bought some more glow plugs, fixed it straight away. Must have been a duff set, bought them from euro as well.
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Old 03-03-15, 10:41 AM   #10
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The plugs euro gave you could have been the standard glow plugs, you need the long burn plugs for the TD's as the plugs continue to glow for up to 3 minutes after the engine is started.


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