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Injection pump TCV (Timing Control Valve) removal


 
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sim303
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Joined: 04 Aug 2016
Posts: 7
Location: London

PostPosted: Sat Oct 14, 2023 18:31    Post subject: Injection pump TCV (Timing Control Valve) removal Reply with quote

Hi all

I hope someone can help (actual question in bold below!)

I'm about one month into chasing a DTC 14 fault ("Timing Control System Malfunction").... a long story...  Along the way, as per the FSM, I have replaced the fuel filter, drained and checked the fuel tank for mould / gunk (none), checked the pertinent ECU signals on a 'scope, checked the various resistances / voltages. I've removed a large mug of disgusting sludge from the intake pipe, manifold, swirl flaps & inlet ports. I've also had the injectors refurbed as they were knackered and leaking, and done the valve gaps whilst I was in there.

This has helped a lot with the exhaust, but I still get DTC 14 and there is a knock at idle.  The last port of call according to the FSM is the injection pump ( "Replace" ).

My thinking is to try replacing just the TCV first.

This afternoon I made good progress and got the two allen bolts out such that I can rotate the TCV in situ. However it does seem to want to withdraw.

I didn't pull too hard as the last thing I want to do is damage something inside the pump!

The question is - does it just pull out? Or is there some mechanism inside that is holding it in place? (I notice there is a bulbous cover place located nearby - I am worried that this hide some sort of physical linkage that needs removing first)

TIA

sim303
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PostPosted: Sat Oct 14, 2023 18:31    Post subject: Google Ads keep this community free to join!


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sim303
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PostPosted: Sat Oct 14, 2023 18:35    Post subject: Reply with quote

I should have said..: 4.2 diesel (1HD-FTE) - June 2002 build
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andy
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Joined: 16 Dec 2003
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Location: Polegate, Sussex, England.

PostPosted: Sun Oct 15, 2023 10:10    Post subject: Reply with quote

Long time ago that I did this, so best you read this TCV
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sim303
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Joined: 04 Aug 2016
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Location: London

PostPosted: Sun Oct 15, 2023 10:23    Post subject: Reply with quote

Thanks! Sounds like it should just pull out now - I'll go down and try that today whilst the sun is out.

Interesting thread that.... The funny thing is I have occasionally seen drips coming down on to the passenger footwell carpet. I assumed they were water condensate or something and haven't investigated further yet. Now you've got me worried (even though I've not noticed and diesel smell in the cab)

Thanks
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andy
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Location: Polegate, Sussex, England.

PostPosted: Sun Oct 15, 2023 14:11    Post subject: Reply with quote

Yes I think it just pulls out, but is a bit tight because of the rubber ring, and I never noticed any diesel smell, it was like it for some time before I found out what the problem was, thought it was water.
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It's Not a Bl**dy Jeep it's a Landcruiser
150 series Invincible X
100 Series VX Limited
Mercedes Sprinter 311 Luton
1993 VX80 4.2td SOLD
1996 Hilux Surf SSR-G Intercooler Sold
1994 Hilux Surf SSR-V Sold
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sim303
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Joined: 04 Aug 2016
Posts: 7
Location: London

PostPosted: Mon Oct 16, 2023 11:57    Post subject: Reply with quote

Thanks - yes it came out ok in the end.  Time to look for a new one I guess...
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