shuddering and backfiring

L

len

Guest

• Feb 10, 2006

• #1

My 110 V8 seems to be down on power on the flat but on hills it goes to
a crawl and starts to shudder and backfire. When it gets to the top of
the hill it "kangaroos" then if you ease off the accelerator the
"kangarooing" stops and it goes back to feeling underpowered again.
This has been going on for some months. I have bought new plugs, leads,
distributor cap and checked the carbs but have not solved the problem
so does anyone have any ideas what could be wrong with it? It has only
done 80,000 miles.

 

M

Mother

Guest

• Feb 10, 2006

• #2

On 10 Feb 2006 11:11:45 -0800, "len" <[email protected]> wrote:

>I have bought new plugs, leads,
>distributor cap and checked the carbs but have not solved the problem
>so does anyone have any ideas what could be wrong with it? It has only
>done 80,000 miles.

Fuel pump? In-line fuel filter?

 

S

Simon Isaacs

Guest

• Feb 10, 2006

• #3

On 10 Feb 2006 11:11:45 -0800, "len" <[email protected]>
scribbled the following nonsense:

>My 110 V8 seems to be down on power on the flat but on hills it goes to
>a crawl and starts to shudder and backfire. When it gets to the top of
>the hill it "kangaroos" then if you ease off the accelerator the
>"kangarooing" stops and it goes back to feeling underpowered again.
>This has been going on for some months. I have bought new plugs, leads,
>distributor cap and checked the carbs but have not solved the problem
>so does anyone have any ideas what could be wrong with it? It has only
>done 80,000 miles.

Right, had this on my 101 just after I bought it....

Change fuel filter

Check carbs, disconnect the linkages and try revving each carb
individually. bURRt did this, and tracked the fault down to a
combination of incorrect float setting and fuel filter.

Gave Martyn and I hours of fun in at Pogglewood!
--

Simon Isaacs

Peterborough 4x4 Club Newsletter Editor and Webmaster
Green Lane Association (GLASS) Financial Director
101 Ambi, undergoing camper conversion www.simoni.co.uk
1976 S3 LWT, Fully restored, ready for sale! Make me an offer!
Suzuki SJ410 (Wife's) 3" lift kit fitted, body shell now restored and mounted on chassis, waiting on a windscreen and MOT
Series 3 88" Rolling chassis...what to do next
1993 200 TDi Discovery
1994 200 TDi Discovery body sheel, being bobbed and modded.....

 

M

Mother

Guest

• Feb 10, 2006

• #4

On Fri, 10 Feb 2006 19:21:17 +0000 (UTC), Simon Isaacs
<[email protected]> wrote:

>Gave Martyn and I hours of fun in at Pogglewood!

Gave the neighbours heart attacks...

 

D

Dad

Guest

• Feb 10, 2006

• #5

One possible problem could be down to a shot camshaft, which can show up
from 60k miles and over, as a rough guide, pull the oil filler cap and if
black deposits are building up, this on the V8 is for two reasons, this area
is cool and so allows combustion byproducts to condense out, it also
indicates the engine has not had sufficient or adaquate servicing. This
along with higher consumption can be a pointer to a shot cam.

"len" <[email protected]> wrote in message
news:[email protected]...
> My 110 V8 seems to be down on power on the flat but on hills it goes to
> a crawl and starts to shudder and backfire. When it gets to the top of
> the hill it "kangaroos" then if you ease off the accelerator the
> "kangarooing" stops and it goes back to feeling underpowered again.
> This has been going on for some months. I have bought new plugs, leads,
> distributor cap and checked the carbs but have not solved the problem
> so does anyone have any ideas what could be wrong with it? It has only
> done 80,000 miles.
>

 

L

Larry

Guest

• Feb 10, 2006

• #6

My 2.25 does a lot of kangarooing when I start up, seems to be ok once the
engine has warmed a little, but I have to jigger a lot with the choke and
throttle to move away smoothly.


--
Larry
Series 3 rust and holes



"len" <[email protected]> wrote in message
news:[email protected]...
> My 110 V8 seems to be down on power on the flat but on hills it goes to
> a crawl and starts to shudder and backfire. When it gets to the top of
> the hill it "kangaroos" then if you ease off the accelerator the
> "kangarooing" stops and it goes back to feeling underpowered again.
> This has been going on for some months. I have bought new plugs, leads,
> distributor cap and checked the carbs but have not solved the problem
> so does anyone have any ideas what could be wrong with it? It has only
> done 80,000 miles.
>

 

B

Brian Tonks

Guest

• Feb 11, 2006

• #7

Check you timing?
Your distributor may be loose...

Brian Tonks
Tonks4x4

"len" <[email protected]> wrote in message
news:[email protected]...
> My 110 V8 seems to be down on power on the flat but on hills it goes to
> a crawl and starts to shudder and backfire. When it gets to the top of
> the hill it "kangaroos" then if you ease off the accelerator the
> "kangarooing" stops and it goes back to feeling underpowered again.
> This has been going on for some months. I have bought new plugs, leads,
> distributor cap and checked the carbs but have not solved the problem
> so does anyone have any ideas what could be wrong with it? It has only
> done 80,000 miles.
>

 

L

Liam

Guest

• Feb 11, 2006

• #8

Had a similar problem with my V8 once, but not as bad as you describe the
problem with yours. It turned out that the vacuum unit on the distributor
had worn out and wasn't working properly may be worth checking yours.

Liam


"len" <[email protected]> wrote in message
news:[email protected]...
> My 110 V8 seems to be down on power on the flat but on hills it goes to
> a crawl and starts to shudder and backfire. When it gets to the top of
> the hill it "kangaroos" then if you ease off the accelerator the
> "kangarooing" stops and it goes back to feeling underpowered again.
> This has been going on for some months. I have bought new plugs, leads,
> distributor cap and checked the carbs but have not solved the problem
> so does anyone have any ideas what could be wrong with it? It has only
> done 80,000 miles.
>

 

M

Mother

Guest

• Feb 11, 2006

• #9

On Sat, 11 Feb 2006 19:49:20 GMT, "Liam"
<[email protected]> wrote:

>Had a similar problem with my V8 once, but not as bad as you describe the
>problem with yours. It turned out that the vacuum unit on the distributor
>had worn out and wasn't working properly may be worth checking yours.

Or at least checking the pipe hasn't come astray.