BX 1600 MISSING on decelleration

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John
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BX 1600 MISSING on decelleration

Post by John »

I've a problem with my BX 1600 RS (petrol). Since having the valve stem oil seals redone - engine was smoking badly and failed MoT on emissions - the car has run less well. The engine judders at times and misses on decelleration. Have tried resetting the ignition timing, renewing plugs and so on but without any success. Can anyone help? :(

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demag
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Post by demag »

What do you mean by missing? Popping in the exhaust? This can be caused by a leaking manifold gasket.
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1990 Bx TGS automatic.

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Aerodynamica
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Post by Aerodynamica »

Odd - I was just about to post a question about this myself also on a 16.

On deceleration I get a sound that could be popping but to me sounds like a bit of exhaust is rattling on the ground (I've checked BTW - it's not..) I first noticed it in the Clyde tunnel with the window down and thought it was coming from the van in the next lane but I got the same today on my own.

It's only on acceleration and it definitely sounds like it's coming from the rear - could it also be a bad manifold?
Graeme M

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demag
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Post by demag »

Loose silencer baffles Graeme?
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2004 C5 Exclusive Estate 2.2hdi automatic.
1990 Bx TGS automatic.

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Kitch
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Post by Kitch »

How loud is it? Could it not just be the natural popping and banging contained in the exhaust that most cars do?
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1983 16TRS (Sunrise red) - 1987 GTi 16v (Black) - 1989 16 Valve (Venetian red) - 1990 16 Valve (Venetian red)

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Tim Leech
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Post by Tim Leech »

Havent noticed that on mine I must say and I have a finely tuned ear, you would normally put that kind of thing down to timing but if thats already been checked? Is the exhast sealed ok?
1963 VW BEETLE 1200
1985 BX 19GT Mk1
1985 BX 19 DTR Mk1
1991 BX 19TZI Auto A/C
1994 Xantia 1.8i SX
1972 Morris Marina 1.8 SDL
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1980 Morris Marina 1.7 HL
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Aerodynamica
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Post by Aerodynamica »

It's not very loud - I missed it at first! It really does sound like a hollow metal something rattling on the ground.

I'm sure it doesn't do it when it's cold but after a fair run. Only does it with the car and engine slowing together.

There is a sight blow in the exhaust at the back box - could be that?
Graeme M

CX 2400 Pallas LPG
2CV6 dolly (SORNed)
Mk1 Xantia 1.9TD SX

'c'est hydropneumatique'

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Tim Leech
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1979 Rover SD1 3.5 V8-S TSL 982
1980 Morris Marina 1.7HL DBV468W
1985 CITROEN BX 19DTR C943DYA (again)
1985 CITROEN BX 19GT C1TBX
1991 CITROEN BX 19TZI AUTO A/C BXi 19
1994 CITROEN XANTIA 1.8 SXi M908HRY
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Post by Tim Leech »

Worth a go mate, the GT had a slight blow when I got it and it made it sound like a farting dog on tickover!
1963 VW BEETLE 1200
1985 BX 19GT Mk1
1985 BX 19 DTR Mk1
1991 BX 19TZI Auto A/C
1994 Xantia 1.8i SX
1972 Morris Marina 1.8 SDL
1979 Rover SD1 V8-S
1980 Morris Marina 1.7 HL
2003 Rover 25 1.6i XL 5 DR

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BX Bandit
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Post by BX Bandit »

You should hear a Morris Minor! They 'fart' every gear change and using engine breaking is just great! :lol: 8)
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1990 BX TGD White
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1971 Triumph 2000 Auto Valencia Blue