TZD slow to rise - likely cause?

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KevR
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TZD slow to rise - likely cause?

Post by KevR »

My TZD estate's always been a bit slow to drag itself off the floor. I think maybe now it's getting even slower. By comparison my other TZD picks itself up in about 30 seconds even if it's been stood for months, and the last time I started the crashed/spares TRS/TZD after two years of inactivity, it rose up even quicker than that!
So what's likely to be the cause on the current TZD? Weak pump?
I've also got the feeling it's been getting a bit more wallowy than usual lately, but that might be imagination (or it might be rear arm bushes on the way out of course).
1990 BX TZD Estate ('the grey one', 1991 BX TZD Estate ('the white one'), 1982 2CV6 Charleston (in bits), 1972 AZU Serie B (2CV van), 1974 HY72 Camper, 1990 Land Rover 110 diesel LWB, 1957 Mobylette AV76, 1992 Ducati 400SS, 1966 VW Beetle, 1990 Mazda MX-5, 1996 Peugeot 106D, 1974 JCB 2D MkII, 1997 BMW R1100RS, 1987 Suzuki GSX-R1100, 1978 Honda CX500A, 1965 Motobecane Cady, 1988 Honda Bros/Africa Twin, 1963 Massey Ferguson 825, and a lot of bicycles!
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Post by Defender110 »

Having all those other cars , camper vans , tractors , motorbikes , hydraulic diggers , bycicles etc. sat on top of it in the garage won't help! :lol:
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KevR
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Post by KevR »

Maybe that's the trouble! Perhaps I should just carry a spare wheel, rather than a whole spare car...! :lol:
1990 BX TZD Estate ('the grey one', 1991 BX TZD Estate ('the white one'), 1982 2CV6 Charleston (in bits), 1972 AZU Serie B (2CV van), 1974 HY72 Camper, 1990 Land Rover 110 diesel LWB, 1957 Mobylette AV76, 1992 Ducati 400SS, 1966 VW Beetle, 1990 Mazda MX-5, 1996 Peugeot 106D, 1974 JCB 2D MkII, 1997 BMW R1100RS, 1987 Suzuki GSX-R1100, 1978 Honda CX500A, 1965 Motobecane Cady, 1988 Honda Bros/Africa Twin, 1963 Massey Ferguson 825, and a lot of bicycles!
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Post by Linegeist »

It's the gravity in Normandy. It's foreign see? Stands to reason, dunnit?

That or the pump. That's what I swapped out on my Athena because of slow rising symptoms (that and a course of Viagra, natch') and the car started leaping into action so fast it made me seasick.

And jealous. :wink:

I'd say pump.
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Post by KevR »

Linegeist wrote:

I'd say pump.
Jolly good - that's the easy bit!
1990 BX TZD Estate ('the grey one', 1991 BX TZD Estate ('the white one'), 1982 2CV6 Charleston (in bits), 1972 AZU Serie B (2CV van), 1974 HY72 Camper, 1990 Land Rover 110 diesel LWB, 1957 Mobylette AV76, 1992 Ducati 400SS, 1966 VW Beetle, 1990 Mazda MX-5, 1996 Peugeot 106D, 1974 JCB 2D MkII, 1997 BMW R1100RS, 1987 Suzuki GSX-R1100, 1978 Honda CX500A, 1965 Motobecane Cady, 1988 Honda Bros/Africa Twin, 1963 Massey Ferguson 825, and a lot of bicycles!
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Post by kiwi »

You know it is amazing what a bit of TLC will do for an older car. :wink:

Sometimes it can be something really easy like checking the LHM level or tightening/replacing a belt.

Then start looking at maybe replacing the LHM with Hydraflush for the recommended miles.

Or Regassing spheres before assuming its the pump at fault.
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Post by MULLEY »

I'm with Kiwi on this, elimenate those points raised, that'll be far cheaper than a replacement pump which may not cure the problem either. I'm especially a fan of hydraflush :D

I'll be getting some for my tzd which refused to rise the last time the engine was fired up :x
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Post by KevR »

Good point, especially about the hydroflush, I'm pretty good at keeping levels checked and belts tightened, not least bcause I'm a skinflint and that kind of thing doesn't cost anything. Spheres are all fairly recently changed so it's probably not that, although you never know.
Daftly, it's probably easier/cheaper for me to try another pump than it it is to go the hydroflush route, simply because I have the luxury of a spares car.
Equally (or probably even more) daftly, I have the proper Citroen tool for checking operational systen pressures, but it hadn't occurred to me 'til now to give it a try...
1990 BX TZD Estate ('the grey one', 1991 BX TZD Estate ('the white one'), 1982 2CV6 Charleston (in bits), 1972 AZU Serie B (2CV van), 1974 HY72 Camper, 1990 Land Rover 110 diesel LWB, 1957 Mobylette AV76, 1992 Ducati 400SS, 1966 VW Beetle, 1990 Mazda MX-5, 1996 Peugeot 106D, 1974 JCB 2D MkII, 1997 BMW R1100RS, 1987 Suzuki GSX-R1100, 1978 Honda CX500A, 1965 Motobecane Cady, 1988 Honda Bros/Africa Twin, 1963 Massey Ferguson 825, and a lot of bicycles!
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Post by mat_fenwick »

Is there any noticeable change in the power steering? I believe the steering is powered straight from the pump so pump deficiencies tend to show up via the steering first.

Kiwi - I don't know, but I can't think why sphere pressure would affect speed of rising.[/i]
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Post by MULLEY »

I thought that when spheres were low on pressure, they allow more lhm into them, hence overall system pressure needs to be a lot higher for the pump to do, that's why it may take longer for the car to rise? I could of course be talking total cobblers :lol:
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1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN

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Post by kiwi »

I forgot to mention Height Correctors to look at :D

As for the spheres what Mulley said. Not sure why but it was one of the things that a Citron Specialist said to me to look at. So who am I to argue...note same specialist also does not think hydroflush is any good prefering the flush with clean LHM as part of the 5,000km service...no I did not miss out a zero thats what they like to do over here :?
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Post by Linegeist »

I hate to say this, but flat spheres will have no effect on system pressure - once they're full of LHM the system pressure resumes settling itself at the pressure determined by the PRV. The only effect will be to remove the flexible element of the suspension system - the nitrogen gas capsule.

You could, in theory, blank off each of the sphere mounting orifices with plates, and the car would still pump up. You'd just have spectacularly firm suspension. :wink:
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Post by mat_fenwick »

But, following Mulley's logic - if the spheres were flat the pump would have to provide a greater volume of LHM to get the car to rise so I can see what may be meant...
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Post by Tim Leech »

Mt TZI is the same, being slow to rise, yet the GT and 16TRS are very quick to get up and at um, I would say its the pump for sure.
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Post by rayfenwick »

Linegeist wrote:You could, in theory, blank off each of the sphere mounting orifices with plates, and the car would still pump up. You'd just have spectacularly firm suspension. :wink:
..and pretend you have a BMW with really low-profile tyres on :)
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