Will bump start but not off key
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
Nov 06, 2013 |
Peugeot Cars & Trucks