Author Topic: rover 420 help needed (Read 6248 times)

jason.blake37 · « **on:** August 26, 2013, 02:18:45 PM »

i have a rover 420 1997 2ltr p reg. been running fine on 50/50 diesel and veg mix. ive just instaled a veg tank. just been to scotland init. it ran fine nearly ran out of fuel so filled the main tank with deisel as i had no veg oil left in the veg tank. it ran for a while until i had to stop and then would not start again. if anyone could help with this i would be very greatful thank you as the engine turns over but will not fire but fires when being towed off.

julianf · « **Reply #1 on:** August 26, 2013, 02:52:27 PM »

You've changed the fuel filter?

jason.blake37 · « **Reply #2 on:** August 26, 2013, 02:54:29 PM »

yes i have thank u

greasemonkey · « **Reply #3 on:** August 26, 2013, 05:52:23 PM »

Valves changing over properly, from one tank to the other?

See that you actually have fuel getting to the injectors to start with.

Tony · « **Reply #4 on:** August 26, 2013, 06:01:20 PM »

Have you got any clear pipe to put on the IP inlet, to make sure fuel is being delivered, and that there are no bubbles.

craig · « **Reply #5 on:** August 26, 2013, 06:34:12 PM »

Recheck pipe joints it may be pulling air.
It would be ok with oil with a bad seal but diesel is a different story.

jason.blake37 · « **Reply #6 on:** August 26, 2013, 07:16:49 PM »

ive got clear pipe from the primer the fuel filtter and from the fuel filter to the injector pump. ive got clear pipe on the return aswell. fuel is getting to the injectors but will not start. the car will run if im towed off and as soon as i stop the engine it wont start again.
i have disconnected the veg and it is running on straight diesel at the moment. it was running on veg 3 days ago when i was in scotland but because i ran out of veg oil i had to switch back to the main tank which at the time was a 50/50 mix. i nearly ran out of fuel so stopped at a garage to fill up with diesel and its run right since as explained above. thank you

greasemonkey · « **Reply #7 on:** August 26, 2013, 07:30:48 PM »

So the engine turns over, but won't fire?
What's your battery like?
Are the headlights dim when you have them on, without the engine running?
What happens if you try to start it with the headlights on, do they about go out?
Does the engine sound like it is turning over normally, or is it slow?
Have you tried jump starting it from another vehicle?
Does it run normally when tow started?

craig · « **Reply #8 on:** August 26, 2013, 08:22:53 PM »

Sounds like a fuel presure fault
how much fuel return is there

Tony · « **Reply #9 on:** August 26, 2013, 08:41:37 PM »

Maybe stop solenoid isn't working properly. Take out and replace with guts removed?

Tony · « **Reply #10 on:** August 26, 2013, 08:44:56 PM »

Wait wait wait - does your IP have a mesh filter built into the inlet under the banjo at the front of the pump? Check that isn't blocked.

jason.blake37 · « **Reply #11 on:** August 27, 2013, 02:30:18 PM »

ive done all the above and they are all fine. it starts up on a tow first time and starts up on easy start when sprayed into the engine, but when you stop the engine and try and restart it it wont have it. any ideas i would be very grateful

Tony · « **Reply #12 on:** August 27, 2013, 04:53:28 PM »

Just to confirm - you have:

- checked glow plugs actually glow when put across battery
- checked mesh filter under inlet banjo (if fitted)
- removed/replaced stop solenoid?

therecklessengineer · « **Reply #13 on:** August 27, 2013, 06:28:02 PM »

Once it's running does it actually run OK? Or is it down on power/smokey?

greasemonkey · « **Reply #14 on:** August 27, 2013, 07:41:47 PM »

It could simply be that the starter motor is not turning the engine fast enough. The symptoms would be similar if the engine was worn, and down on compression. It could be a slightly slow starter motor, or it's not getting quite enough power, or the battery is a bit weak, or a combination of all of them.
Not that that is a diagnosis, just that the above would produce those symptoms.

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rover 420 help needed