hi all can any one help me i have a zx td that struggles to start when i try to start it it fire a few times then just spinnes over after a min or so it will start iv,e changes the glow plugs fitted a new fuel filter a fuel primer and as i was talled that the one way valve had gone and it still struggles to start.the car has done 160000 miles and its been seviced regaruly. any adive would be great.
many thanks simon.
p.s a friends zx has got the same miles on the clock with the same starting problem.
zx volcane TD starting problems
Moderator: RichardW
Is it as difficult to start when the engine is hot?
The two major starting problems with diesels are air the fuel and misfunctioning glowplugs.
Have you tried pumping up the fuel pressure by hand first? If this helps, then you've still got air leaks - the seal on the fuel filter canister is a well known source of air ingress on this engine, alternaterly, ols fuel hoses can leak in air without leaking out díesel.
You say that you have changed the glowplugs - can you hear the glowplug relay clicking in and out? Try measuring the voltage on the terminal of one of the plugs, just to check that they are getting voltage (approx 12V).
Does it help if you depress the acclerator pedal while starting?
Try these tests and get back to the forum.
//NiSk
The two major starting problems with diesels are air the fuel and misfunctioning glowplugs.
Have you tried pumping up the fuel pressure by hand first? If this helps, then you've still got air leaks - the seal on the fuel filter canister is a well known source of air ingress on this engine, alternaterly, ols fuel hoses can leak in air without leaking out díesel.
You say that you have changed the glowplugs - can you hear the glowplug relay clicking in and out? Try measuring the voltage on the terminal of one of the plugs, just to check that they are getting voltage (approx 12V).
Does it help if you depress the acclerator pedal while starting?
Try these tests and get back to the forum.
//NiSk
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OK, there was a thread on the citroën forum here a month or so ago, where someone else had starting trouble on a diesel. He tried almost everything, including changing a lot of parts that didn't make any difference, in the end he found that the engine started fine if the throttle was depressed half way. I can't remember exactly wht the fault was, but I think it was something to do with the injection pump. Try searching and see if you can find anything, or hope some else who uses the forum remembers the cure!
//NiSk
//NiSk
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Simon - try this Diesel coldstart device description.
Simon, as Nisk puts it, the fuel filter housing could be warped on the bottom, allowing air to seep as my TD suffered the same problem. Take out the housing, a main screw attaches it at the bottom. Check the bottom edges, if some parts of the edges are glazed, its a sure sign of warping. Visually the bottom edge can be seen to be warped or wavy, not flat. Use a flat file or glue sandpaper to flat sheet glass to even out the warping. Not too much as there is the rubber seal to fit in. After that, to ensure better seal, I used high temperature black silicone sealant (or liquid gasket) to seal the edges. Worked like a charm, still starting good after 2 months, churns once or twice before starting. But this is only one of the few problems that might plague a starting problem.