Peugeot 405 srdt

If the car turns over well..so you can crank the engine using the key and it turns over fast, but it won't start, could be down to low fuel pressure, possibly fuel pump. Could be the coil ( which I doubt as the car starts when bumped) or, like you say, the plugs. The fact that the engine fires up when pushed, and the lack of info regarding how well the engine turns over using the battery, seems to me that it could be either a bad earth ground from the battery, but more likely a bad battery that's lost it amps and losing its charge quickly when the engine is off. Engines can turn over with a bad battery but the amps are bad and it dies quick. One thing you could try would be to see if you can get someone to jump start the engine using cables. If the engine starts its most likely the battery. You may still encounter a problem using cables because there still might not be enough amps getting through, so the best option would be to try a different battery first. Your car is starting when bumped which makes me think the plugs are ok, as when power reaches the plugs, they heat up and create combustion. If the fuel pressure is low, this could cause your problem, as the bump will increase the pressure and supply allowing it to start. I'm not sure if your car is electronic pump or mechanical. If it's electrical this could be unlikely the cause unless the power drain when trying to crank the engine from the battery is causing poor fuel supply from the electric pump. There is another thing..do you allow enough time for the glow plugs to heat up? some cars as they age prefer some time with the key on to the point the dash lights are on, and wait 30 seconds and then turn over the engine, this power supply can allow the plugs to heat up prior to being turned over. One other thing could be the pre- heaters. I'm not sure the exact names, but modern engines have a system that pre-heats the plugs, like pre-coils or something. This could be bad.

Try this first:
turn key to the point the ignition is on fully with lights on but don't turn over the engine. Leave it 30 seconds and then turn over the engine. See if this works. This will help heat the plugs and prime the fuel pump.

If this does not work, then try to get someone to jump start your car using cables. Again follow the previous tip. If this works it's likely your battery.

If this does not work, try a different battery. hopefully someone can loan you one. If this works, it's your old battery. some batteries are maintenance free, so you shouldn't top up with distilled water, but some are not and lose water. If it's low, top it up with distilled water. Do not use tap water. Be careful handling the battery with the caps off. Do not over fill.

If this does not work, try new glow plugs.

If this does not work, it could be the fuel pump causing low pressure.

Lastly, when you key the engine to turn it ove, does it just click? If you just hear a click from the starter motor, then either the battery is bad, a bad earth ground requiring a clean of the terminals and reconnecting them, or new starter motor. If you just hear a click and the battery is good, see if you can get someone to whack the starter motor body with a hammer and it may start. Be very careful not to have the car is gear, to no get your hand caught in moving parts, etc. This is at your own risk, please google how to do this and then decide if you wish to try.

There can only be so many problems. Power or fuel. It starts when pushed, so it gets fuel from the pump when pushed. The plugs get power when pushed. The key is does it turn over from battery, and is it getting enough amps. Good luck

Could be the starter solenoid failing. The solenoid is on the starter-have them both tested.

There is a fuse and also a relay. Your fuse box or power distribution box(maybe under the hood) which could also house the relay. Take a test light and check for power at the glow plugs them selves and work backwards towards the power source. If you have power right at the glow plugs, take the plugs out and see if they heat up. You will have to check for power during the waiting period for the plugs to heat up.

do you plug it in at night, if you do than change the glow plugs.

A glow plug is a small heating element in the cylinder. It heats the diesel so that starting can be made easy. Is your car standing in the open frozen parking If yes, then it would require a lot of battery power to first heat all the cylinders and then turn the engine to start. What we do in such conditions is to light up some fire under the car and heat the fuel system enough for the diesel to warm up a little and thus save the battery for glow plugs. Generally, all vehicles have an indicator light which comes on when the glow plugs are ready for starting. The diesel will ignite on compression, but it has to reach the cylinder and thus has to be flowing. In cold it freezes and hence the need for glow plugs and the heat. If it is parked in heated parking then the need for glow plugs decreases.

what voltage u getting ?. did it just stop and then not restart. if its getting fuel and glow plugs are working the next two items id look at is the cam shaft and crank shaft position sencors. also make sure ur battery is in good condition, so starter motor is turning fast enough to build up the correct pressure on the rail.

change the glow plugs i used to have a 306 and a huge cloud of white smoke come out of the exhaust on start up lol, changed the glow plugs and was clear as a whistle, its because the glow plugs dont get as hot as the others and fires up on the hottest cylinders so if you have two glow plugs out the other two are being forced to turn over hope this helps you ;)

sounds like you have a lazy starter, had this problem a while back.

I am with a similar problem...

After putting on a new sump i found that the starter motor would work cranking the engine but no power is going to the glow plugs. The light on the dash does not appear either.

The relay for the coils does click but that is the end of it. I have a suspission it is the imobiliser but after taking the battery on and off several times to reset... still nothing.

There is fuel, good battery (fully charged), fuel lines are clean pressurised...

Any ideas???

i have the same problem on my 306 i changed the battery and starting was much improved although i still need to change one of my glow plus i cannot get to * You have probably shorted out the +12v supply wire to the top of the glow plug. It is easily done and is easily corrected. Examine all of your wires to the glow plugs. At the end of each one should be a small ring crimp going over the threaded post and held on with either a 6mm or 8mm nut. These crimps should be only touching the threaded post, and not the glow plug body. They are very thin metal and easily bent to touch the body of the glow plug, hence not giving the heater element inside the juice to work. Good luck space cadet.