Series 1 overrun

T

Tony Boyle

Guest

• Jul 18, 2006

• #1

Hi,

When driving downhill in my 86" series I (2L engine) using engine braking
(2nd gear) the exhaust 'pops' every few seconds as though the engine is
overfuelled? It also does this to a lesser extent on the flat in fourth gear
if I ease off the accelerator at higher speeds. Is this normal for this
engine or does something need adjusting?

Thanks for any advice.

Tony.

 

R

Richard Brookman

Guest

• Jul 18, 2006

• #2

Tony Boyle wrote:

|| Hi,
||
|| When driving downhill in my 86" series I (2L engine) using engine
|| braking (2nd gear) the exhaust 'pops' every few seconds as though
|| the engine is overfuelled? It also does this to a lesser extent on
|| the flat in fourth gear if I ease off the accelerator at higher
|| speeds. Is this normal for this engine or does something need
|| adjusting?
||
|| Thanks for any advice.
||
|| Tony.

Don't know that specific engine, but popping is usually a sign of an air
leak into the exhaust, usually at the manifold. I'd check that first.

--
Rich
==============================

I don't approve of signatures, so I don't have one.

 

T

Tom Woods

Guest

• Jul 18, 2006

• #3

On Tue, 18 Jul 2006 20:27:55 +0100, "Richard Brookman"
<[email protected]> wrote:

>Don't know that specific engine, but popping is usually a sign of an air
>leak into the exhaust, usually at the manifold. I'd check that first.

cars can also pop when lean. in my car (which has an air/fuel meter) i
only get popping when lean not rich.
as richard says, also check for air leaks anywhere.

 

T

Tony Boyle

Guest

• Jul 18, 2006

• #4

If there were a leak in the exhaust would it do it all the time or only when
using engine braking as is happenening here?

Tony.


"Tom Woods" <[email protected]> wrote in message
news:[email protected]...
> On Tue, 18 Jul 2006 20:27:55 +0100, "Richard Brookman"
> <[email protected]> wrote:
>
>>Don't know that specific engine, but popping is usually a sign of an air
>>leak into the exhaust, usually at the manifold. I'd check that first.
>
> cars can also pop when lean. in my car (which has an air/fuel meter) i
> only get popping when lean not rich.
> as richard says, also check for air leaks anywhere.

 

S

Srtgray

Guest

• Jul 18, 2006

• #5

Tony Boyle wrote:
> If there were a leak in the exhaust would it do it all the time or only when
> using engine braking as is happenening here?
>
> Tony.
>

My 110 V8 does it particularly when I let my foot off the accelerator
from a higher speed - i.e. when the engine is slowing the vehicle down.

Stuart


>
> "Tom Woods" <[email protected]> wrote in message
> news:[email protected]...
>
>>On Tue, 18 Jul 2006 20:27:55 +0100, "Richard Brookman"
>><[email protected]> wrote:
>>
>>
>>>Don't know that specific engine, but popping is usually a sign of an air
>>>leak into the exhaust, usually at the manifold. I'd check that first.
>>
>>cars can also pop when lean. in my car (which has an air/fuel meter) i
>>only get popping when lean not rich.
>>as richard says, also check for air leaks anywhere.
>
>
>

 

T

Tom Woods

Guest

• Jul 18, 2006

• #6

On Tue, 18 Jul 2006 21:42:06 +0100, "Tony Boyle"
<[email protected]> wrote:

>If there were a leak in the exhaust would it do it all the time or only when
>using engine braking as is happenening here?
>
cant help you about the exhaust leak, but ive just fixed a bad fueling
issue on my car which lead to it being very lean and i only got pops
at the same time as you describe - when engine braking down hills.

 

W

William Tasso

Guest

• Jul 19, 2006

• #7

On Tue, 18 Jul 2006 21:42:06 +0100, Tony Boyle
<[email protected]> wrote:

[exhaust popping]

> If there were a leak in the exhaust would it do it all the time or only
> when
> using engine braking as is happenening here?

That was my experience on a motor cycle I had once upon a long time ago.

FWIW: Ariel Red Hunter

--
William Tasso

Land Rover - 110 V8
Discovery - V8

 

B

beamendsltd

Guest

• Jul 19, 2006

• #8

In message <[email protected]>
"Tony Boyle" <[email protected]> wrote:

> Hi,
>
> When driving downhill in my 86" series I (2L engine) using engine braking
> (2nd gear) the exhaust 'pops' every few seconds as though the engine is
> overfuelled? It also does this to a lesser extent on the flat in fourth gear
> if I ease off the accelerator at higher speeds. Is this normal for this
> engine or does something need adjusting?
>
> Thanks for any advice.
>
> Tony.
>
>

Your timing is slightly out - new points & condenser will probably
fix it.

Richard
--
www.beamends-lrspares.co.uk [email protected]
RISC-OS - Where have all the good guys gone?
Lib Dems - Townies keeping comedy alive

 

A

Austin Shackles

Guest

• Jul 19, 2006

• #9

On or around Wed, 19 Jul 2006 00:04:47 +0100, "William Tasso"
<[email protected]> enlightened us thusly:

>On Tue, 18 Jul 2006 21:42:06 +0100, Tony Boyle
><[email protected]> wrote:
>
>[exhaust popping]
>
>> If there were a leak in the exhaust would it do it all the time or only
>> when
>> using engine braking as is happenening here?
>
>That was my experience on a motor cycle I had once upon a long time ago.
>
>FWIW: Ariel Red Hunter

bastard. I bet you flogged it cheap, too... and now regret it.
--
Austin Shackles. www.ddol-las.net my opinions are just that
If all be true that I do think, There are five reasons we should drink;
Good wine, a friend, or being dry, Or lest we should be by and by;
Or any other reason why. - Henry Aldrich (1647 - 1710)

 

A

Austin Shackles

Guest

• Jul 19, 2006

• #10

On or around Tue, 18 Jul 2006 22:39:54 +0100, Tom Woods
<[email protected]> enlightened us thusly:

>On Tue, 18 Jul 2006 21:42:06 +0100, "Tony Boyle"
><[email protected]> wrote:
>
>>If there were a leak in the exhaust would it do it all the time or only when
>>using engine braking as is happenening here?
>>
>cant help you about the exhaust leak, but ive just fixed a bad fueling
>issue on my car which lead to it being very lean and i only got pops
>at the same time as you describe - when engine braking down hills.

yeah. lean mix (carb error or air leak) or incorrect ignition timing are
the normal causes. timing too far advanced, IIRC.

--
Austin Shackles. www.ddol-las.net my opinions are just that
If all be true that I do think, There are five reasons we should drink;
Good wine, a friend, or being dry, Or lest we should be by and by;
Or any other reason why. - Henry Aldrich (1647 - 1710)

 

W

William Tasso

Guest

• Jul 19, 2006

• #11

On Wed, 19 Jul 2006 20:44:26 +0100, Austin Shackles
<[email protected]> wrote:

> On or around Wed, 19 Jul 2006 00:04:47 +0100, "William Tasso"
> <[email protected]> enlightened us thusly:
>
>> On Tue, 18 Jul 2006 21:42:06 +0100, Tony Boyle
>> <[email protected]> wrote:
>>
>> [exhaust popping]
>>
>>> If there were a leak in the exhaust would it do it all the time or only
>>> when
>>> using engine braking as is happenening here?
>>
>> That was my experience on a motor cycle I had once upon a long time ago.
>>
>> FWIW: Ariel Red Hunter
>
> bastard. I bet you flogged it cheap, too... and now regret it.

yes, yes & yes <g>

all a long time ago now

there's usually one on eb*y: http://snipurl.com/thwd

--
William Tasso

Land Rover - 110 V8
Discovery - V8

 

L

Larry

Guest

• Jul 20, 2006

• #12

My series 3 seems to be doing a lot of that lately, (This is after I sorted
out the full on backfire problem)

the engine is also running rather hot at the moment. (I suspect my radiator
really needs flushing never mind I need to keep a closer eye on water
levels)

--
Larry
Series 3 rust and holes



"Tony Boyle" <[email protected]> wrote in message
news:[email protected]...
> Hi,
>
> When driving downhill in my 86" series I (2L engine) using engine braking
> (2nd gear) the exhaust 'pops' every few seconds as though the engine is
> overfuelled? It also does this to a lesser extent on the flat in fourth
gear
> if I ease off the accelerator at higher speeds. Is this normal for this
> engine or does something need adjusting?
>
> Thanks for any advice.
>
> Tony.
>
>

 

L

Larry

Guest

• Jul 20, 2006

• #13

But is it ever possibly economically and sensibly to get a pensionable
engine "just so"?

--
Larry
Series 3 rust and holes

"Austin Shackles" <[email protected]> wrote in message
news:[email protected]...
> On or around Tue, 18 Jul 2006 22:39:54 +0100, Tom Woods
> <[email protected]> enlightened us thusly:
>
> yeah. lean mix (carb error or air leak) or incorrect ignition timing are
> the normal causes. timing too far advanced, IIRC.
>
> --
> Austin Shackles. www.ddol-las.net my opinions are just that
> If all be true that I do think, There are five reasons we should drink;
> Good wine, a friend, or being dry, Or lest we should be by and by;
> Or any other reason why. - Henry Aldrich (1647 - 1710)

 

O

Oily

Guest

• Aug 9, 2006

• #14

"William Tasso" <[email protected]> wrote in message
news[email protected]...
> On Tue, 18 Jul 2006 21:42:06 +0100, Tony Boyle
> <[email protected]> wrote:
>
> [exhaust popping]
>
> > If there were a leak in the exhaust would it do it all the time or only
> > when
> > using engine braking as is happenening here?
>
> That was my experience on a motor cycle I had once upon a long time ago.
>
> FWIW: Ariel Red Hunter
>
I've still got one, '47 350.

Martin.

 

W

William Tasso

Guest

• Aug 9, 2006

• #15

On Wed, 09 Aug 2006 01:12:56 +0100, Oily
<[email protected]> wrote:

>
> "William Tasso" <[email protected]> wrote in message
> news[email protected]...
>> On Tue, 18 Jul 2006 21:42:06 +0100, Tony Boyle
>> <[email protected]> wrote:
>>
>> [exhaust popping]
>>
>> > If there were a leak in the exhaust would it do it all the time or
>> only
>> > when
>> > using engine braking as is happenening here?
>>
>> That was my experience on a motor cycle I had once upon a long time ago.
>>
>> FWIW: Ariel Red Hunter
>>
> I've still got one, '47 350.

47 would be a side valve motor? a VH?

think mine was designated NH - definately had them modern OHVs

--
William Tasso

Land Rover - 110 V8
Discovery - V8

 

O

Oily

Guest

• Aug 10, 2006

• #16

"William Tasso" <[email protected]> wrote in message

> >>
> >> That was my experience on a motor cycle I had once upon a long time
ago.
> >>
> >> FWIW: Ariel Red Hunter
> >>
> > I've still got one, '47 350.
>
> 47 would be a side valve motor? a VH?
>
> think mine was designated NH - definately had them modern OHVs
>
(19)47 is the year, NH the model (rigid/teles) 350 OHV.
VH is 500 OHV.

Martin.