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Coolant/fuel filter 4jx1


 
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moody blue
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Joined: 28 Jul 2007
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Location: s/glos

PostPosted: Sun Jun 28, 2020 14:18    Post subject: Coolant/fuel filter 4jx1 Reply with quote

Does anyone know why the part down below the back of the turbo has coolant going to it, it looks like it is connected to the fuel pre filter.
I'm thinking it may be a heat exchanger to stop the fuel from freezing in cold climate and if i'm correct it could be why i'm getting fuel in the coolant.
Please correct me if i am wrong and any advise would be appreciated
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PostPosted: Sun Jun 28, 2020 14:18    Post subject: Google Ads keep this community free to join!


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Malcolm
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Location: Great Yarmouth Norfolk

PostPosted: Sun Jun 28, 2020 17:55    Post subject: Reply with quote

Are you sure its a fuel pre filter?Never heard of one of them on this engine. Just piped from the tank to the filter in N/S engine bay.I believe you are describing the the EGR cooler.
Double check(i knoiw its difficult to see much round under the exhaust with out a mirror).
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moody blue
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Joined: 28 Jul 2007
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Location: s/glos

PostPosted: Mon Jun 29, 2020 8:51    Post subject: Reply with quote

Thanks Malcolm,
It could be EGR I didn't realise they had a cooler. It is just above the long black filter (which I believe is the fuel pre-filter) on the OS by the bulkhead. The hose from the engine to the unit burst due to fuel in the coolant, so i was thinking to bypass it (if it was a fuel warmer). What problems would that cause with the EGR if I did. Gonna try to get it on the ramp so i can get a good look.
Keeping it off-road so no worries about emissions
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Malcolm
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Joined: 22 Feb 2009
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Location: Great Yarmouth Norfolk

PostPosted: Mon Jun 29, 2020 10:28    Post subject: Reply with quote

Where is this long black filter? I have never seen a filter on the offside bulkhead.
There is a long filter on the O/S of engine next to chasis with a cooler above it which is the oil cooler.
If you have had diesel in the coolant it will most likely be the injector sleeve "O" rings leaking and in need of replacement or a cracked head or gasket failure .
There is loads of info on this forum about fuel in coolant issues.
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moody blue
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Joined: 28 Jul 2007
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Location: s/glos

PostPosted: Mon Jun 29, 2020 11:52    Post subject: Reply with quote

Thanks Malcolm, that makes sense.
How easy is it to change the injector sleeve O Rings. not too bothered really if its grief ill just change the pipes when they burst
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Malcolm
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Location: Great Yarmouth Norfolk

PostPosted: Mon Jun 29, 2020 15:10    Post subject: Reply with quote

There are a few videos on you tube from the ozzie club, yhey call em Jackeroos over there.
Check it out.
Its not a job for the faint hearted.
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moody blue
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PostPosted: Mon Jun 29, 2020 18:11    Post subject: Reply with quote

cheers, i'll check it out
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