Morning all.

 

After smelling a bit coolant-y last night, I found a puddle under the Zed this morning. After crawling around underneath and tracing the path back up it looks like it’s coming from the short black hose at the top of the picture - in fact you can just see a blurred drop falling in the picture (assuming it’s uploaded ok).

 

 

If I read the manual correctly I think that’s one of the outlet hoses from the radiator to the head? If so, any pitfalls in replacing it - or advice on how best to get at the rearmost clip, which I can only just about see!

 

Thanks,

 

Chris

You can get replacements and you MUST use the silicon sealant that comes with them on the engine end

Thanks for your reply Tony. I can’t even SEE the engine end, had to stick my phone down a gap to get that picture :). How much has to come off to get access? And is it possible to replace just one of the two short hoses, or does the other one have to be disconnected to remove the pipe and get clearance?

I'm not sure how much has to come off. I didn't do the job, but I remember when it was done the recommendation was to replace both Hoses to save having to repeat the operation !

 

I think you remove the netal bits and they are gasget sealed to the engine and then the hoses connect to the meatl bit

Yes that’s what I thought, looking at it. Might pop down and see Jimmer and let him work his magic on it, I can just see me scraping loads of skin off trying to get access! Thanks for the advice

If you decide to have a go yourself, this link will give you a good idea of what's involved:

 

http://www.pexcom.com.au/z32cms/e107_plugins/content/content.php?content.233

 

The leak could be caused by either the rubber pipes splitting or the short metal tubes surface

corroding and allowing coolant to leak by (also clean up the aluminum pipes where they fit the

rubber pipes).

 

New bypass hose part#'s:

 

https://conceptzperformance.com/nissan-infiniti-nissan-oem-coolant-bypass-hose-nissan-300zx-z32-14055-f6511_p_1000.php

 

Depending on the condition of your's - new bypass tube part#'s:

 

https://conceptzperformance.com/nissan-infiniti-nissan-oem-coolant-bypass-tube-nissan-300zx-z32-14053-f651a_p_1914.php

 

You can get the parts in the UK from Mike@MJP (trader on here) or http://www.allcarpartsfast.co.uk

Edited April 16, 20196 yr by AndrewG

Thanks Andrew!

Just an update, after looking through those instructions I thought I’d give it a go! Having sourced the new hoses, the right spec coolant and some new long-nose pliers and having a day free I spent an hour or so stripping down today, only to be thwarted at almost the last hurdle by complete inability to remove the 6mm Allen keys holding the hard pipes on. Despite a long soak with WD40 they wouldn’t budge, to the point where the ball head on my long Allen key actually snapped off! Probably not been undone since they were put there in 1996.

 

Given that if I snap the head off one of the bolts it’s game over (and there are 3 more to remove) I’ve put it all back together and I’m off to see Jimmer next week. I’ve put some silicone sealant round the hose in case it helps stem the leak.

 

So, not an unqualified success, but at least I know the rad comes in and out easily enough and the coolant looked nice and clean. Thanks everyone for the excellent advice and links.

 

Chris

The offending bolts and the tool that will remove them if the 6mm hex socket in the bolt has failed:

 

The bolt head diameter is 13mm. The tool is case hardened and cuts into the bolt head and grips it as you turn

it counterclockwise. Just use a ratchet handle and push the tool firmly onto the head of the bolt and turn.

 

 

https://www.screwfix.com/p/erbauer-bolt-nut-remover-set-6-pieces/6083d

https://www.toolstation.com/irwin-bolt-grip-nut-remover-set/p63045

Edited April 27, 20196 yr by AndrewG
Qualified the use of the tool

Thanks again!

I use these never failed.

 

I use these never failed.

 

In metric sizes I trust? But you are right so long as the hex socket hasn't failed.

Will have to get myself a set for next time. Hopefully once they’ve been taken out they won’t be so bad

The offending bolts and the tool that will remove them if the 6mm hex socket in the bolt has failed:

 

The bolt head diameter is 13mm. The tool is case hardened and cuts into the bolt head and grips it as you turn

it counterclockwise. Just use a ratchet handle and push the tool firmly onto the head of the bolt and turn.

 

[ATTACH=CONFIG]116785[/ATTACH]

 

https://www.screwfix.com/p/erbauer-bolt-nut-remover-set-6-pieces/6083d

https://www.toolstation.com/irwin-bolt-grip-nut-remover-set/p63045

 

Loving these, not seen them before and look so simple. They might be helpful with an issue I have with the locking wheel nuts on my Skoda.

Have to ad to my collection as well.