Starting problem - NOT glowplugs

Technical questions and answers about the Mazda Bongo

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bigdaddycain
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Re: Starting problem - NOT glowplugs

Post by bigdaddycain » Tue Oct 13, 2009 2:28 am

Billy-Burco wrote:Hi all,

Had, Nay! still have the same problem! Summer starts Ok, but as the cold weather arrives, it starts great but after two or three seconds it runs rough (as if one pot is not firing )and produces the cloud of smoke out the back, If I try to pull away there is no power to the drive, only increased ammounts of smoke out the back :cry: after approx a minute there is a click from under the dashboard in front of driver position and all runs ok =D>

Over a period of time, in an attempt to identify the faulty part I've changed the following:

Glowplugs, Air filter, Injectors, Fuel filter, Blanked off EGR,

Still no solution, maybe it will be the fuelpump seals???? ( no prime pump, so I'm unable to try that method)

Hope this may save you some time (and money)

Good luck,

BB
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Chris P

Re: Starting problem - NOT glowplugs

Post by Chris P » Wed Nov 04, 2009 8:06 pm

Thanks for asking whether it is fixed - but still not.

I ordered a set of fuel pump seals from the Club, and got my garage to have a go at it with the instruction sheet on the club site.

They replaced, and I still seem to have a tiny fuel leak. White smoke when starting after leaving it for some time, but runs like a dream once going. Glowplugs are fine. Replaced fuel filter in case that was badly fitted.

One problem with the fuel seals was that there were four identical seals, and the mechanic could only find two points where they fitted. He said there were seals of other sizes that might have been needed that I didn't have.

Anybody got any more details on what seals should be needed? Does it vary from diesel model to diesel model? I asked Ian at the club, and he answered reasonably that he supplied four the same, as that was what someone had told him was the right thing...

Clearly if there are other points that might need new seals, they could be where the leak is. Talk about being careful what you wish for "If only this leak was bigger, I could find the damn thing...".

Cheers

Chris
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hembramacho
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Re: Starting problem - NOT glowplugs

Post by hembramacho » Wed Nov 04, 2009 8:30 pm

Hi Chris.
Sorry to hear your problem is still there. If you remember at the start of this thread I had a similar sounding problem. This is where I am with it all.
My usual garage suggested a problem with the fuel injectors and referred me to a diesel engine specialist. He first of all adjusted the injector timing, which kind of made it better, but the problem was still there. It also made the Bongo sound like a tractor! :shock: He's since changed this back, and when I suggested the fuel seals he agreed this could be the problem, but told me it was a fiddly job and to save on labour what he normally does in cases such as that is put a non-return valve on the fuel filter, which is what he has done. This seems to have cured the 'bouncy' starts and black smoke issue :D , although every now and again I do get a feeling of a slight (only slight mind) judder and a bit of smoke. I also at the moment have a leak in the exhaust manifold where a stud has sheared off, so following tomorrow when I'm having 8 new studs and a new gasket, as well as the EGR blanked off, I'm hoping [-o< all my troubles will have gone! Will report back on that.

Hope this is of some help.

Andrew
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