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Hyundai Galloper Diesel 1998 hard to start when warm.


 
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VEJ
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Joined: 02 Nov 2014
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PostPosted: Fri Nov 07, 2014 10:30    Post subject: Hyundai Galloper Diesel 1998 hard to start when warm. Reply with quote

Ok my Galloper Diesel when cold will start and run perfectly the whole day.
But if you have to shut down the engine and right after that start her up again. Forget it.
Nine out of 10 times it will just crank over without firing up.
Wait 5-10 minutes. Crank her and she will start up and run again as if nothing happened.
Changed the fuel filter and the fuel pump. ( Mechanic now says injection fuel pump needs overhauling)
My mechanic says it are the glow plugs that are faulty. Changed those.
What else can be wrong????


Edit: Fuel pump, injection pump
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PostPosted: Fri Nov 07, 2014 10:30    Post subject: Google Ads keep the POCUK free to join!


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Simon_W
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PostPosted: Sat Nov 08, 2014 11:21    Post subject: Reply with quote

Hi and welcome to the forum  salute
As you've had no replies, I thought I'd help out and maybe get this thread a little more active. It's maybe that some folks don't know that a Hyundai Galloper is a Pajero built under licence.
Firstly, it would help if you said what engine you have, and also any details of the injection pump - ie purely mechanical or semi-electronic?

A diesel engine needs air, compression, and fuel at the right time and quantity in order to fire. When cold it can needs some help, hence glow plugs. Glow plugs aren't required once the engine is hot, so I reckon you can rule those out.

I certainly wouldn't replace the pump without further investigation.

So I reckon the first thing to do is to crack open one of the injector pipe joints when the engine is hot, and see if fuel is coming out.  If it's not, then you need to find out why. Is the fuel shut-off valve on the pump energised and opening, for example? This could conceivable be affected by temperature.

If you are getting fuel to the injectors, it's possible that the spray pattern is such that the engine will fire when the glow plugs are on, and then keep going, but it won't start without them when hot.

Another potential cause of the problem could be the crankshaft angle sensor, if your vehicle has one. Again, electrical items can malfunction when hot, and behave normally when not.

But don't go changing expensive components, like an injector pump, without proper investigation.

If your mechanic suggested that the problem was glow plugs, I'd doubt his judgement.

You might find it better to go to a specialist diesel workshop rather than a normal car mechanic.

It's an interest issue that you have. Keep us posted.
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VEJ
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Joined: 02 Nov 2014
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PostPosted: Sat Nov 08, 2014 12:19    Post subject: Reply with quote

Simon_W thanks for the reply.
Indeed the Galloper is in fact a Pajero. Thats why I thought to try this forum.
The  engine is a D4BH Diesel Turbo charged/Intercooled.
Right now the Diesel specialist thinks it is or the regulation of the injection pump, or the fuel shutoff valve in the injection pump.
Later today I will know more.

This problem happened at a very inopportune time because I just bought a 2003 Pajero Mk.3 and had the Galloper for sale.   Sad

Now I first have to fix this problem before I can sell it.
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Simon_W
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PostPosted: Sat Nov 08, 2014 13:01    Post subject: Reply with quote

Hi VEJ
Glad that you've taken specialist advice.
That sounds sensible - as per my posting I reckon the shutoff valve is a reasonable suspect.

I don't recognise that engine type. Is it a Mitsubishi engine built under licence too or is it one of Hyundai's own?

I've seen lots of Gallopers in Portugal, but very few here.

I hope that your problem is fixed soon, and look forward to hearing what the issue actually was.
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VEJ
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PostPosted: Sat Nov 08, 2014 13:51    Post subject: Reply with quote

The engine is then I think a Hyundai engine.

Me I also want to know what the problem is.
Hope to hear something soon.
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VEJ
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PostPosted: Sat Nov 08, 2014 16:48    Post subject: Reply with quote

Ok new developments.
When you try to start the engine after you have been driving it, like I said it will not start.
You wait 5 - 10 minutes and then it will start.
But if you cool down the injection pump body with i.e. spraying water on it it will start immediately.
So conclusion there is something wrong with the injection pump.
And probably it is the fuel shut-off valve that probably will not open the moment you try to startr the engine immediately after shutdown.

Next is an other injection pump housing see if that will solve the problem.

But this has to wait until I get my "new" Pajero. Because I need a car even a troublesome one. Hopefully monday it will be in my possesion.
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Simon_W
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PostPosted: Sat Nov 08, 2014 17:44    Post subject: Reply with quote

Thanks for the update. With any luck it's shut-off valve that's jamming, as those are relatively inexpensive. The symptoms fit.

Enjoy your Mk3 Pajero when you get it.  Smile
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james445
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PostPosted: Tue Mar 16, 2021 20:06    Post subject: Reply with quote

Facing the same issue with my 2015 Hyundai i10
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