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Old 01-01-2006, 15:01   #1 (permalink)
Si K
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v6 and 7 eighths!

Hi All,

Happy new year

Getting most hacked off with the disco now!

so far....

New camshaft, followers and pushrods (cos it seemed down on power, turns out
engine had not been particularly well looked after!)

New Dizzy cap

New leads

New rotor arm (twice!)

New coil

New plugs (twice)

New airflow meter

And still it seems like its running on 6 and 7 eighths cylinders rather than
a full 8. Plus, getting a slight niff of fuel when running, which suggests
that it is still overfuelling (which is why the airflow meter was replaced)

Any ideas?????

Only other things that come to mind now are the temp sensors (not the one
for the gauge - assuming this has two like the 3.9 rangie) and the ecu

Si


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Old 01-01-2006, 16:01   #2 (permalink)
EMB
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Re: v6 and 7 eighths!

Si K wrote:

> Any ideas?????


Fuel pressure regulator.

Check the charging voltage - ECUs often do bizzarre things if the
alternator output isn't correct.


--
EMB
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Old 01-01-2006, 18:01   #3 (permalink)
Badger
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Re: v6 and 7 eighths!


"EMB" <embtwo@gmail.com> wrote in message
news:dp9jgr$dpi$1@lust.ihug.co.nz...
> Si K wrote:
>
>> Any ideas?????

>


Injectors??
Put it on an old fashioned crypton analyser and do a "Power Balance" test,
that'll trace it to whatever cylinder(s) are the cause.
Badger.


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Old 01-02-2006, 01:01   #4 (permalink)
Si K
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Re: v6 and 7 eighths!


"Badger" <brianhatton@btinternet.com> wrote in message
news:dp9t1j$oki$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com...
>
> "EMB" <embtwo@gmail.com> wrote in message
> news:dp9jgr$dpi$1@lust.ihug.co.nz...
>> Si K wrote:
>>
>>> Any ideas?????

>>

>
> Injectors??
> Put it on an old fashioned crypton analyser and do a "Power Balance" test,
> that'll trace it to whatever cylinder(s) are the cause.
> Badger.
>


The one thing I forgot is that pre camshaft change it seemed ok, but its
only since the airflow meter went tonto overfuelling that all has been bad
in the garden of v8

Si


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Old 01-02-2006, 02:01   #5 (permalink)
Lofty
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Re: v6 and 7 eighths!

On Sun, 1 Jan 2006 21:41:05 -0000, "Si K"
<simonk@merlion-con******ts.freeserve.co.uk> wrote:

>Hi All,
>
>Happy new year
>
>Getting most hacked off with the disco now!
>
>so far....
>
>New camshaft, followers and pushrods (cos it seemed down on power, turns out
>engine had not been particularly well looked after!)
>
>New Dizzy cap
>
>New leads
>
>New rotor arm (twice!)
>
>New coil
>
>New plugs (twice)
>
>New airflow meter
>
>And still it seems like its running on 6 and 7 eighths cylinders rather than
>a full 8. Plus, getting a slight niff of fuel when running, which suggests
>that it is still overfuelling (which is why the airflow meter was replaced)
>
>Any ideas?????
>
>Only other things that come to mind now are the temp sensors (not the one
>for the gauge - assuming this has two like the 3.9 rangie) and the ecu
>
>Si
>

does the fuel pump run for a few seconds after being left overnight?
if yes check leaking fuel pressure regulator ( petrol in vacuum pipe
to manifold) or leaking injectors.

Had similar problem, chased it all around the engine bay , temp probes
ign.amp etc, problem was solved during recent call back to landrovers
to have the fuel tank changed, when they managed to flood the engine.

In my case 3 injectors were leaking badly, dumping all of the
pressurised fuel into the inlet manifolds in about 10 minutes.
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Old 01-02-2006, 09:01   #6 (permalink)
John Greystrong
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Re: v6 and 7 eighths!

Si K wrote:
> Hi All,
>
> Happy new year
>
> Getting most hacked off with the disco now!
>
> so far....
>
> New camshaft, followers and pushrods (cos it seemed down on power, turns out
> engine had not been particularly well looked after!)
>
> New Dizzy cap
>
> New leads
>
> New rotor arm (twice!)
>
> New coil
>
> New plugs (twice)
>
> New airflow meter
>
> And still it seems like its running on 6 and 7 eighths cylinders rather than
> a full 8. Plus, getting a slight niff of fuel when running, which suggests
> that it is still overfuelling (which is why the airflow meter was replaced)
>
> Any ideas?????


I'd start with a compression check, wet and dry.

John
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