A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.

Compatibility of Catalytic Converters

More
22 Feb 2024 19:13 #254523 by tomlil01
Hi, Robin,

My car is apparently SN413V-5.

Am I reading the parts list correctly that this 2016 cat should fit?

cuztoms.co.uk/products/suzuki-jimny-cata...c-converter-2016-29k

Thanks
Lee

Please Log in or Create an account to join the conversation.

More
26 Feb 2024 17:42 - 26 Feb 2024 17:46 #254610 by tomlil01
Hi, Yakuza

I replaced my second cat with a cheap one and I seem to have no blockage now. Back pressure test on the whole exhaust system is good. Performance seems back to normal.

When I took the second cat off a lot of metallic "sand" fell out, I think from the upstream end. Do you think that since I only replaced the second cat ~1 year ago that this points to the first cat causing the problem? My mechanic looked at the first cat with a special camera and said it looked intact. Also, I did a back pressure test on just the first cat and there was no blockage. However, I am not sure whether the honeycomb might look ok, but be still causing issues by dropping this "sand" into the second cat?

Thanks
Lee
Attachments:
Last edit: 26 Feb 2024 17:46 by tomlil01.

Please Log in or Create an account to join the conversation.

More
26 Feb 2024 18:16 #254612 by DrRobin
Hi,

It looks like your first CAT has disintegrated and blocked the second CAT. The first CAT doesn't get blocked when it disintegrates as all of the material gets pushed in to the second CAT.

Chances are your second CAT was OK (if it was only a year old), if you could have cleaned out all of the 'sand' like material.

Either way it is now fixed.

Robin

2020 blue SZ5 (one of the last to be registered in the UK)
Ex 2011 Blue Jimny SZ4
Northumberland Jimny Blog

The following user(s) said Thank You: tomlil01

Please Log in or Create an account to join the conversation.

More
26 Feb 2024 20:50 #254621 by tomlil01
Thanks, Robin. I guess I will replace the first cat as well, so as not to risk damaging the second cat again.

Please Log in or Create an account to join the conversation.

More
26 Feb 2024 23:16 - 26 Feb 2024 23:19 #254624 by yakuza
Glad you found your soulution.
My two broken cats, one jimny and one Swift, where both so broken it was easy to see.
The jimny one rattled and was 30-40 % disintegrated but visible defects only from the engine side.
The Swift had a big hole thru it kind of melted.

I tried to flush the jimny no2 cat first with air pressure and then water. Put it back without the no1 cat but the car was still lacking in power.
I think the powder burn stuck on to the next cat.

Not sure you need both the cats though, the Swift only got one from New and my jimny pass the mot with only one cat. 

Norway 2005 Jimny M16A VVT, 235 BFG MT, 2" Trailmaster, ARB rear lck, 17%/87% high/low gears.
Last edit: 26 Feb 2024 23:19 by yakuza.
The following user(s) said Thank You: tomlil01

Please Log in or Create an account to join the conversation.

More
27 Feb 2024 18:36 #254647 by jackonlyjack
It is possible to smash out the first cat 
and it will pass the mot with a good second cat

Please Log in or Create an account to join the conversation.

Time to create page: 0.132 seconds
Joomla template by a4joomla