Any Hdi experts?! - General Forum - Peugeot 306 GTi-6 & Rallye Owners Club

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Subject: Any Hdi experts?!

martinh

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Location: Bideford

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Post #1

I've got a 2002 Fiat Scudo van fitted with the 2.0 90bhp JTD engine (peugeot engine) and I've got issues with at the moment with starting.
Id say its more consistently worse when its hot but sometimes can be just as bad when its cold. So far have changed the ecu coolant sensor (made no difference) and have just finished changing the in tank fuel pump (s**t job, don't want to do that again and now stink of diesel!!) and that has also made no difference!

Any suggestions?!

Cheers
Martin

Posted 15th May 2012 at 19:53

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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

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Post #2

Get it plugged in, see what the pressures are and what they're meant to be, might be a fuel rail pressure sensor or MAF going down.

is it the 8 valve?

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Posted 15th May 2012 at 19:55

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pugjim

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Post #3

First thing I would have changed is the fuel filter. Make sure you fit the new seal that comes with it.

Posted 15th May 2012 at 19:57

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martinh

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Post #4

Yes mate, it is the 8 valve one. I plugged into it the other day but only with a code reader and the only fault stored was high speed fan relay. Need to blag a more in depth diagnostic setup and go into it more I guess.

If it was airflow meter or fuel rail pressure sensor would they be massively affected by temperature?

Posted 15th May 2012 at 19:59

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martinh

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Post #5

pugjim wrote:

First thing I would have changed is the fuel filter. Make sure you fit the new seal that comes with it.

Sorry should have said, fuel filter is about 50 miles old and was playing up before the filter change.

Posted 15th May 2012 at 20:00

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pugjim

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Post #6

are you getting any de-pollution fault coming up on the dash is the engine management light on?

Posted 15th May 2012 at 20:01

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martinh

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Post #7

Nope! No management light and no de pollution fault. Its that bad at starting I would have expected it to throw the management light on!

Posted 15th May 2012 at 20:09

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pugjim

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Post #8

Sound like some air leak in the fuel filter/lines, maybe the filter housing is warped? or a poor seal. If theres no management light on then its not going to come up with much on diagbox, I suppose you could check fuel pressure etc but i dont think it would be that helpful to find your problem.

Posted 15th May 2012 at 20:12

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martinh

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Post #9

Thats certainly something to check. Thanks mate.
Ive got to be honest I dont know a great deal about the HDI lumps! Do you think it could be an injector issue? Saying that it runs perfectly (once started!) and doesn't smoke etc so I guess that would rule the injector(s) out?!

Posted 15th May 2012 at 20:15

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welshpug!

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Post #10

Many dealers stock the filter housings for these, they're quite a fragile plastic with a ratcheting clip IIRC, not like the bolted down cover ont eh XUD.

Is the engine rattly at all? missing slightly?

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Posted 15th May 2012 at 20:25

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martinh

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Post #11

Nope! Not Rattly and doesn't miss! Might be an ignorant question but if the filter housing was knackered would it not be leaking fuel? Only reason I ask is because its dry as a bone round the filter housing!

Posted 15th May 2012 at 20:33

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mike rallye

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Post #12

has it got a priming bulb on? as i have know these to be at fault

Posted 15th May 2012 at 20:37

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info@pug1off.com

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Post #13

If it runs well when it does start and has no faults stored its probably the crank sensor signal becomming weak. Could also be an immobiliser fault, try removing the immobiliser box when the engine IS running, you will loose central locking but it will help you eliminate an immobiliser fault.

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Posted 15th May 2012 at 20:47

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mechanical_repairs

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Post #14

Cam and crank synchronisation problems I would say.

Carl

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Posted 15th May 2012 at 21:07

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mechanical_repairs

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Post #15

Cam and crank synchronisation problems I would say.

Carl

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Posted 15th May 2012 at 21:10

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martinh

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Post #16

Sorry to be stupid mate but are you referring to the timing?!

Posted 15th May 2012 at 21:17

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mechanical_repairs

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Post #17

martinh wrote:

Sorry to be stupid mate but are you referring to the timing?!

Yes the cam and crank sensor have to match when cranking for the ecu to be happy with it, sometimes this can can a while to happen and it causes the starting to be hard work.

You need to be in a parameters section of diagnostics to see what's what.

Carl

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Posted 15th May 2012 at 21:21

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martinh

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Post #18

Well problem is solved and have to say I didn't atall expect it to be what was at fault!

After spending a bit of time researching online and following the advice on here I borrowed an injector leak off tester, As said before there was absolutely no running issue (starting was s**t but performance was perfect, no smoke etc etc) Set the kit up after alot of faffing around fired it up and was expecting this test to last 2 minutes.

After just 30 seconds the leak off from injector number 3 had completely filled the container while the other 3 had literally a few drops in!

Found a secondhand injector, fitted it, performed another leak off test and all were even! Put everything back together and now she starts absolutely perfectly whether its hot or cold!

Am genuinely surprised that it was an injector at fault because as said performance was perfect and was not smoking or givong any indication that an injector was at fault! Oh well its all a learning curve I suppose!

Posted 17th May 2012 at 20:41

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mechanical_repairs

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Post #19

martinh wrote:

Very good, seems the issue was low fuel pressure then as its start up that requires the most.

Good man.

Carl

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Posted 17th May 2012 at 21:07

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martinh

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Post #20

Yeh would seem so mate! those engines are such a b**ch to work on! Theres absolutely no room!!!

Posted 17th May 2012 at 21:10

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welshpug!

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Post #21

in that shell most certainly! they aren't too bad in a 306 or 406.

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Posted 17th May 2012 at 21:23

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martinh

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Post #22

Haven't had much to do with them in another shell although I had to go to the srappy earlier to get a spring clip that holds the leak off pipes on top of the injector as one disappeared in the engine bay! There was certainly more room in a 206 hdi engine bay though!!

Posted 17th May 2012 at 21:26

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