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Head gasket replacement

  • brumby
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18 Jan 2018 11:28 - 18 Jan 2018 11:29 #188518 by brumby
Head gasket replacement was created by brumby
Hi all, new to the forum.

I have a 2008 1.3L petrol Jimny with manual gbox. I believe my head gasket requires replacement as the car is using coolant but there is no visible leak.

The other thought I had was the radiator cap is lifting prematurely and blowing the coolant out although I don't think that this is the case?

The question I have is has anyone on here removed their Jimny cylinder head without removing the whole engine from the vehicle? Or is it easier to just take the engine out?

Your help would be greatly appreciated.

Thx
Last edit: 18 Jan 2018 11:29 by brumby.

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  • Jimx5
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18 Jan 2018 14:01 #188520 by Jimx5
Replied by Jimx5 on topic Head gasket replacement
I’ve never had to remove an engine to do the head gasket.
Remove your rad cap and top the coolant, start the engine and watch for bubbles or do a compression test.
These are simple first tests but no you won’t need to remove the engine.

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  • 1066Boy
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18 Jan 2018 17:31 #188532 by 1066Boy
Replied by 1066Boy on topic Head gasket replacement
Sounds just like Kates Jimny. Engine pressurising the rad and forcing the coolant through the expansion bottle. Headgasket being changed as we speak. :(

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  • mickt
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21 Jan 2018 12:14 - 21 Jan 2018 12:15 #188669 by mickt
Replied by mickt on topic Head gasket replacement
If you take the head off don't forget to give it a thorough inspection for cracks and corrosion damage on both head and block. Ensure the new gasket matches the old one and take the opportunity to clean the valves and ports and relap the valves into their seats if of course they are fully serviceable. Don't just get the gasket but get the kit which will include the new valve oil seals too. Also take the opportunity to reverse flush out the coolant system before you put the new antifreeze in. It is a good idea to use new head bolts too.
Last edit: 21 Jan 2018 12:15 by mickt.

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22 Jan 2018 22:34 #188736 by Keithy
Replied by Keithy on topic Head gasket replacement
I think it'll be easier if you remove the engine.....I wouldn't fancy doing it in situ.

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  • Jimx5
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23 Jan 2018 07:05 #188743 by Jimx5
Replied by Jimx5 on topic Head gasket replacement
I really don't understand your logic....why would you even consider taking the whole engine out?

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  • brumby
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23 Jan 2018 10:59 #188751 by brumby
Replied by brumby on topic Head gasket replacement
Thanks for the advice everyone. My initial thought was that although it is potentially more labour intensive to remove the whole engine it might actually be easier. Im not all that familiar with the Jimny and as such I was unsure what access was like to exhaust and inlet manifold while the engine is still in the vehicle. Also I believe the cam chain cover needs to come off and if that is indeed the case I think it would be easier to work on with the engine out. All the gasket sealing faces will need to be thouroughly cleaned and inspected and this will be far easier with the engine out. After all it's not like it's a big engine so removing it should be straight forward with the right equipment. I was just hoping that someone on here may have personal experience from doing this exact job on the Jimny.

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23 Jan 2018 13:42 #188759 by kirkynut
Replied by kirkynut on topic Head gasket replacement

1066Boy wrote: Sounds just like Kates Jimny. Engine pressurising the rad and forcing the coolant through the expansion bottle. Headgasket being changed as we speak. :(


Was this a twin cam 1066 boy?

What miles has your engine done Jimx5 and what miles had yours done when the head gasket failed 1066 boy?

It's just I've not heard of a twin cam Jimny head gasket failing more than once or twice in all my Jimny years.

Kirkynut

The underdog often starts the fight, and occasionally the upper dog deserves to win - Edgar Watson Howe.

My Jimny Thread Here: www.bigjimny.com/index.php/forum/8-my-ji...on-continues?start=0

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  • 1066Boy
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23 Jan 2018 18:19 #188776 by 1066Boy
Replied by 1066Boy on topic Head gasket replacement
No it was the early engine. Kate has a 2003 soft top. :(

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25 Jan 2018 20:50 #188841 by Keithy
Replied by Keithy on topic Head gasket replacement

Jimx5 wrote: I really don't understand your logic....why would you even consider taking the whole engine out?

Have you stripped the head off one....it's a pain....you can stand on boxes leaning over the wings all day or remove it and put it in an engine stand and have an easier time.....

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  • Jimx5
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25 Jan 2018 22:11 #188845 by Jimx5
Replied by Jimx5 on topic Head gasket replacement
I will admit i've NOT done a Jimny head gasket, but being a forklift mechanic (40 odd years and counting) a head strip is something i do at least once or twice a month.
Leave the engine in situ, lift the bonnet and at a workable and stable height remove the head, then if your working outside as i have to do every day and it rains or snows you can just shut the bonnet leaving the block protected from the elements.
Now you can send the head away to be skimmed and pressure tested, while the block is safely tucked under the bonnet.
No need to hire engine lifts and find somewhere safe to store the block without it tipping over, getting damaged or even picked up as scrap to be weighed in by your local scrap collector.
Hope you understand where i'm coming from and no offence meant.
Good luck which ever route you decide to take.
Dave.

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  • EP-ZookAU
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26 Jan 2018 04:03 #188849 by EP-ZookAU
Replied by EP-ZookAU on topic Head gasket replacement
Hey thr Brumby,

Whilst I'm also new to this forum, I couldn't pass on advice with this. You seem to have convinced yourself about removing the engine for a head gasket replacement. Seriously .... the timing belt cover is like 8 bolts, whip the fan, belts & pulleys off, release the timing belt & rocker cover, couple of sensor, ignition plugs ... wholla!

If you are worried about room also slide the radiator up & out, two hoses & two top bolts.... way way easier than pulling the motor out!

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