Air in diesel fuel line Help!
10-10-2007, 04:33 PM
#1
Guest
Posts: n/a
Air in diesel fuel line Help!
Hello,
I have driven audi 80 TD on reserve diesel till it started missing.
Then I have tanked but it started giving white smoke. I thought that
filter is full of dirt so I changed the filter then I noticed that there is
air in the
lines so today I changed all rubber lines from filter to the pump but still
I can see air
in the lines and the white smoke is there.
My Qs is, Is it injector which is letting air? car is rough with reduced
power
and I already tried the injector cleaner with the fuel but so far no effect.
I also tried losening the diesel intake on the injectors to check if no RPM
reduces then
I can spot the faulty injector but all injectors effect the RPM so I guess
they are partially working.
What shoud be the next thing to check? It was all ok before I drove to empty
tank.
Any tip is much appriciated.
Thanks
I have driven audi 80 TD on reserve diesel till it started missing.
Then I have tanked but it started giving white smoke. I thought that
filter is full of dirt so I changed the filter then I noticed that there is
air in the
lines so today I changed all rubber lines from filter to the pump but still
I can see air
in the lines and the white smoke is there.
My Qs is, Is it injector which is letting air? car is rough with reduced
power
and I already tried the injector cleaner with the fuel but so far no effect.
I also tried losening the diesel intake on the injectors to check if no RPM
reduces then
I can spot the faulty injector but all injectors effect the RPM so I guess
they are partially working.
What shoud be the next thing to check? It was all ok before I drove to empty
tank.
Any tip is much appriciated.
Thanks
10-11-2007, 10:49 PM
#2
Guest
Posts: n/a
Re: Air in diesel fuel line Help!
chilldown wrote:
> Hello,
>
> I have driven audi 80 TD on reserve diesel till it started missing. Then
> I have tanked but it started giving white smoke. I thought that filter
> is full of dirt so I changed the filter then I noticed that there is air
> in the
> lines so today I changed all rubber lines from filter to the pump but
> still I can see air
> in the lines and the white smoke is there.
>
> My Qs is, Is it injector which is letting air? car is rough with reduced
> power
> and I already tried the injector cleaner with the fuel but so far no
> effect.
>
> I also tried losening the diesel intake on the injectors to check if no
> RPM reduces then
> I can spot the faulty injector but all injectors effect the RPM so I
> guess they are partially working.
>
> What shoud be the next thing to check? It was all ok before I drove to
> empty tank.
>
> Any tip is much appriciated.
>
> Thanks
Did you fill up the new filter with diesel fuel before you installed it?
Skipping that step in itself would create a fairly large air pocket.
--
Madesio
> Hello,
>
> I have driven audi 80 TD on reserve diesel till it started missing. Then
> I have tanked but it started giving white smoke. I thought that filter
> is full of dirt so I changed the filter then I noticed that there is air
> in the
> lines so today I changed all rubber lines from filter to the pump but
> still I can see air
> in the lines and the white smoke is there.
>
> My Qs is, Is it injector which is letting air? car is rough with reduced
> power
> and I already tried the injector cleaner with the fuel but so far no
> effect.
>
> I also tried losening the diesel intake on the injectors to check if no
> RPM reduces then
> I can spot the faulty injector but all injectors effect the RPM so I
> guess they are partially working.
>
> What shoud be the next thing to check? It was all ok before I drove to
> empty tank.
>
> Any tip is much appriciated.
>
> Thanks
Did you fill up the new filter with diesel fuel before you installed it?
Skipping that step in itself would create a fairly large air pocket.
--
Madesio
10-11-2007, 10:49 PM
#3
Guest
Posts: n/a
Re: Air in diesel fuel line Help!
chilldown wrote:
> Hello,
>
> I have driven audi 80 TD on reserve diesel till it started missing. Then
> I have tanked but it started giving white smoke. I thought that filter
> is full of dirt so I changed the filter then I noticed that there is air
> in the
> lines so today I changed all rubber lines from filter to the pump but
> still I can see air
> in the lines and the white smoke is there.
>
> My Qs is, Is it injector which is letting air? car is rough with reduced
> power
> and I already tried the injector cleaner with the fuel but so far no
> effect.
>
> I also tried losening the diesel intake on the injectors to check if no
> RPM reduces then
> I can spot the faulty injector but all injectors effect the RPM so I
> guess they are partially working.
>
> What shoud be the next thing to check? It was all ok before I drove to
> empty tank.
>
> Any tip is much appriciated.
>
> Thanks
Did you fill up the new filter with diesel fuel before you installed it?
Skipping that step in itself would create a fairly large air pocket.
--
Madesio
> Hello,
>
> I have driven audi 80 TD on reserve diesel till it started missing. Then
> I have tanked but it started giving white smoke. I thought that filter
> is full of dirt so I changed the filter then I noticed that there is air
> in the
> lines so today I changed all rubber lines from filter to the pump but
> still I can see air
> in the lines and the white smoke is there.
>
> My Qs is, Is it injector which is letting air? car is rough with reduced
> power
> and I already tried the injector cleaner with the fuel but so far no
> effect.
>
> I also tried losening the diesel intake on the injectors to check if no
> RPM reduces then
> I can spot the faulty injector but all injectors effect the RPM so I
> guess they are partially working.
>
> What shoud be the next thing to check? It was all ok before I drove to
> empty tank.
>
> Any tip is much appriciated.
>
> Thanks
Did you fill up the new filter with diesel fuel before you installed it?
Skipping that step in itself would create a fairly large air pocket.
--
Madesio
10-11-2007, 10:49 PM
#4
Guest
Posts: n/a
Re: Air in diesel fuel line Help!
chilldown wrote:
> Hello,
>
> I have driven audi 80 TD on reserve diesel till it started missing. Then
> I have tanked but it started giving white smoke. I thought that filter
> is full of dirt so I changed the filter then I noticed that there is air
> in the
> lines so today I changed all rubber lines from filter to the pump but
> still I can see air
> in the lines and the white smoke is there.
>
> My Qs is, Is it injector which is letting air? car is rough with reduced
> power
> and I already tried the injector cleaner with the fuel but so far no
> effect.
>
> I also tried losening the diesel intake on the injectors to check if no
> RPM reduces then
> I can spot the faulty injector but all injectors effect the RPM so I
> guess they are partially working.
>
> What shoud be the next thing to check? It was all ok before I drove to
> empty tank.
>
> Any tip is much appriciated.
>
> Thanks
Did you fill up the new filter with diesel fuel before you installed it?
Skipping that step in itself would create a fairly large air pocket.
--
Madesio
> Hello,
>
> I have driven audi 80 TD on reserve diesel till it started missing. Then
> I have tanked but it started giving white smoke. I thought that filter
> is full of dirt so I changed the filter then I noticed that there is air
> in the
> lines so today I changed all rubber lines from filter to the pump but
> still I can see air
> in the lines and the white smoke is there.
>
> My Qs is, Is it injector which is letting air? car is rough with reduced
> power
> and I already tried the injector cleaner with the fuel but so far no
> effect.
>
> I also tried losening the diesel intake on the injectors to check if no
> RPM reduces then
> I can spot the faulty injector but all injectors effect the RPM so I
> guess they are partially working.
>
> What shoud be the next thing to check? It was all ok before I drove to
> empty tank.
>
> Any tip is much appriciated.
>
> Thanks
Did you fill up the new filter with diesel fuel before you installed it?
Skipping that step in itself would create a fairly large air pocket.
--
Madesio
10-11-2007, 10:49 PM
#5
Guest
Posts: n/a
Re: Air in diesel fuel line Help!
chilldown wrote:
> Hello,
>
> I have driven audi 80 TD on reserve diesel till it started missing. Then
> I have tanked but it started giving white smoke. I thought that filter
> is full of dirt so I changed the filter then I noticed that there is air
> in the
> lines so today I changed all rubber lines from filter to the pump but
> still I can see air
> in the lines and the white smoke is there.
>
> My Qs is, Is it injector which is letting air? car is rough with reduced
> power
> and I already tried the injector cleaner with the fuel but so far no
> effect.
>
> I also tried losening the diesel intake on the injectors to check if no
> RPM reduces then
> I can spot the faulty injector but all injectors effect the RPM so I
> guess they are partially working.
>
> What shoud be the next thing to check? It was all ok before I drove to
> empty tank.
>
> Any tip is much appriciated.
>
> Thanks
Did you fill up the new filter with diesel fuel before you installed it?
Skipping that step in itself would create a fairly large air pocket.
--
Madesio
> Hello,
>
> I have driven audi 80 TD on reserve diesel till it started missing. Then
> I have tanked but it started giving white smoke. I thought that filter
> is full of dirt so I changed the filter then I noticed that there is air
> in the
> lines so today I changed all rubber lines from filter to the pump but
> still I can see air
> in the lines and the white smoke is there.
>
> My Qs is, Is it injector which is letting air? car is rough with reduced
> power
> and I already tried the injector cleaner with the fuel but so far no
> effect.
>
> I also tried losening the diesel intake on the injectors to check if no
> RPM reduces then
> I can spot the faulty injector but all injectors effect the RPM so I
> guess they are partially working.
>
> What shoud be the next thing to check? It was all ok before I drove to
> empty tank.
>
> Any tip is much appriciated.
>
> Thanks
Did you fill up the new filter with diesel fuel before you installed it?
Skipping that step in itself would create a fairly large air pocket.
--
Madesio
10-12-2007, 07:24 AM
#6
Guest
Posts: n/a
Re: Air in diesel fuel line Help!
I opened the filetr twice after that and yes I filled the filter everytime.
Somehow I noticed that vacuum is not building up.
"Madesio" <email@invalid.address> wrote in message
news
an.2007.10.12.03.49.34@invalid.address...
> chilldown wrote:
>
>> Hello,
>>
>> I have driven audi 80 TD on reserve diesel till it started missing. Then
>> I have tanked but it started giving white smoke. I thought that filter
>> is full of dirt so I changed the filter then I noticed that there is air
>> in the
>> lines so today I changed all rubber lines from filter to the pump but
>> still I can see air
>> in the lines and the white smoke is there.
>>
>> My Qs is, Is it injector which is letting air? car is rough with reduced
>> power
>> and I already tried the injector cleaner with the fuel but so far no
>> effect.
>>
>> I also tried losening the diesel intake on the injectors to check if no
>> RPM reduces then
>> I can spot the faulty injector but all injectors effect the RPM so I
>> guess they are partially working.
>>
>> What shoud be the next thing to check? It was all ok before I drove to
>> empty tank.
>>
>> Any tip is much appriciated.
>>
>> Thanks
>
>
> Did you fill up the new filter with diesel fuel before you installed it?
> Skipping that step in itself would create a fairly large air pocket.
>
>
>
> --
> Madesio
Somehow I noticed that vacuum is not building up.
"Madesio" <email@invalid.address> wrote in message
news
an.2007.10.12.03.49.34@invalid.address...> chilldown wrote:
>
>> Hello,
>>
>> I have driven audi 80 TD on reserve diesel till it started missing. Then
>> I have tanked but it started giving white smoke. I thought that filter
>> is full of dirt so I changed the filter then I noticed that there is air
>> in the
>> lines so today I changed all rubber lines from filter to the pump but
>> still I can see air
>> in the lines and the white smoke is there.
>>
>> My Qs is, Is it injector which is letting air? car is rough with reduced
>> power
>> and I already tried the injector cleaner with the fuel but so far no
>> effect.
>>
>> I also tried losening the diesel intake on the injectors to check if no
>> RPM reduces then
>> I can spot the faulty injector but all injectors effect the RPM so I
>> guess they are partially working.
>>
>> What shoud be the next thing to check? It was all ok before I drove to
>> empty tank.
>>
>> Any tip is much appriciated.
>>
>> Thanks
>
>
> Did you fill up the new filter with diesel fuel before you installed it?
> Skipping that step in itself would create a fairly large air pocket.
>
>
>
> --
> Madesio
10-12-2007, 07:24 AM
#7
Guest
Posts: n/a
Re: Air in diesel fuel line Help!
I opened the filetr twice after that and yes I filled the filter everytime.
Somehow I noticed that vacuum is not building up.
"Madesio" <email@invalid.address> wrote in message
newsan.2007.10.12.03.49.34@invalid.address...
> chilldown wrote:
>
>> Hello,
>>
>> I have driven audi 80 TD on reserve diesel till it started missing. Then
>> I have tanked but it started giving white smoke. I thought that filter
>> is full of dirt so I changed the filter then I noticed that there is air
>> in the
>> lines so today I changed all rubber lines from filter to the pump but
>> still I can see air
>> in the lines and the white smoke is there.
>>
>> My Qs is, Is it injector which is letting air? car is rough with reduced
>> power
>> and I already tried the injector cleaner with the fuel but so far no
>> effect.
>>
>> I also tried losening the diesel intake on the injectors to check if no
>> RPM reduces then
>> I can spot the faulty injector but all injectors effect the RPM so I
>> guess they are partially working.
>>
>> What shoud be the next thing to check? It was all ok before I drove to
>> empty tank.
>>
>> Any tip is much appriciated.
>>
>> Thanks
>
>
> Did you fill up the new filter with diesel fuel before you installed it?
> Skipping that step in itself would create a fairly large air pocket.
>
>
>
> --
> Madesio
Somehow I noticed that vacuum is not building up.
"Madesio" <email@invalid.address> wrote in message
news
an.2007.10.12.03.49.34@invalid.address...> chilldown wrote:
>
>> Hello,
>>
>> I have driven audi 80 TD on reserve diesel till it started missing. Then
>> I have tanked but it started giving white smoke. I thought that filter
>> is full of dirt so I changed the filter then I noticed that there is air
>> in the
>> lines so today I changed all rubber lines from filter to the pump but
>> still I can see air
>> in the lines and the white smoke is there.
>>
>> My Qs is, Is it injector which is letting air? car is rough with reduced
>> power
>> and I already tried the injector cleaner with the fuel but so far no
>> effect.
>>
>> I also tried losening the diesel intake on the injectors to check if no
>> RPM reduces then
>> I can spot the faulty injector but all injectors effect the RPM so I
>> guess they are partially working.
>>
>> What shoud be the next thing to check? It was all ok before I drove to
>> empty tank.
>>
>> Any tip is much appriciated.
>>
>> Thanks
>
>
> Did you fill up the new filter with diesel fuel before you installed it?
> Skipping that step in itself would create a fairly large air pocket.
>
>
>
> --
> Madesio
10-12-2007, 07:24 AM
#8
Guest
Posts: n/a
Re: Air in diesel fuel line Help!
I opened the filetr twice after that and yes I filled the filter everytime.
Somehow I noticed that vacuum is not building up.
"Madesio" <email@invalid.address> wrote in message
newsan.2007.10.12.03.49.34@invalid.address...
> chilldown wrote:
>
>> Hello,
>>
>> I have driven audi 80 TD on reserve diesel till it started missing. Then
>> I have tanked but it started giving white smoke. I thought that filter
>> is full of dirt so I changed the filter then I noticed that there is air
>> in the
>> lines so today I changed all rubber lines from filter to the pump but
>> still I can see air
>> in the lines and the white smoke is there.
>>
>> My Qs is, Is it injector which is letting air? car is rough with reduced
>> power
>> and I already tried the injector cleaner with the fuel but so far no
>> effect.
>>
>> I also tried losening the diesel intake on the injectors to check if no
>> RPM reduces then
>> I can spot the faulty injector but all injectors effect the RPM so I
>> guess they are partially working.
>>
>> What shoud be the next thing to check? It was all ok before I drove to
>> empty tank.
>>
>> Any tip is much appriciated.
>>
>> Thanks
>
>
> Did you fill up the new filter with diesel fuel before you installed it?
> Skipping that step in itself would create a fairly large air pocket.
>
>
>
> --
> Madesio
Somehow I noticed that vacuum is not building up.
"Madesio" <email@invalid.address> wrote in message
news
an.2007.10.12.03.49.34@invalid.address...> chilldown wrote:
>
>> Hello,
>>
>> I have driven audi 80 TD on reserve diesel till it started missing. Then
>> I have tanked but it started giving white smoke. I thought that filter
>> is full of dirt so I changed the filter then I noticed that there is air
>> in the
>> lines so today I changed all rubber lines from filter to the pump but
>> still I can see air
>> in the lines and the white smoke is there.
>>
>> My Qs is, Is it injector which is letting air? car is rough with reduced
>> power
>> and I already tried the injector cleaner with the fuel but so far no
>> effect.
>>
>> I also tried losening the diesel intake on the injectors to check if no
>> RPM reduces then
>> I can spot the faulty injector but all injectors effect the RPM so I
>> guess they are partially working.
>>
>> What shoud be the next thing to check? It was all ok before I drove to
>> empty tank.
>>
>> Any tip is much appriciated.
>>
>> Thanks
>
>
> Did you fill up the new filter with diesel fuel before you installed it?
> Skipping that step in itself would create a fairly large air pocket.
>
>
>
> --
> Madesio
10-12-2007, 07:24 AM
#9
Guest
Posts: n/a
Re: Air in diesel fuel line Help!
I opened the filetr twice after that and yes I filled the filter everytime.
Somehow I noticed that vacuum is not building up.
"Madesio" <email@invalid.address> wrote in message
newsan.2007.10.12.03.49.34@invalid.address...
> chilldown wrote:
>
>> Hello,
>>
>> I have driven audi 80 TD on reserve diesel till it started missing. Then
>> I have tanked but it started giving white smoke. I thought that filter
>> is full of dirt so I changed the filter then I noticed that there is air
>> in the
>> lines so today I changed all rubber lines from filter to the pump but
>> still I can see air
>> in the lines and the white smoke is there.
>>
>> My Qs is, Is it injector which is letting air? car is rough with reduced
>> power
>> and I already tried the injector cleaner with the fuel but so far no
>> effect.
>>
>> I also tried losening the diesel intake on the injectors to check if no
>> RPM reduces then
>> I can spot the faulty injector but all injectors effect the RPM so I
>> guess they are partially working.
>>
>> What shoud be the next thing to check? It was all ok before I drove to
>> empty tank.
>>
>> Any tip is much appriciated.
>>
>> Thanks
>
>
> Did you fill up the new filter with diesel fuel before you installed it?
> Skipping that step in itself would create a fairly large air pocket.
>
>
>
> --
> Madesio
Somehow I noticed that vacuum is not building up.
"Madesio" <email@invalid.address> wrote in message
news
an.2007.10.12.03.49.34@invalid.address...> chilldown wrote:
>
>> Hello,
>>
>> I have driven audi 80 TD on reserve diesel till it started missing. Then
>> I have tanked but it started giving white smoke. I thought that filter
>> is full of dirt so I changed the filter then I noticed that there is air
>> in the
>> lines so today I changed all rubber lines from filter to the pump but
>> still I can see air
>> in the lines and the white smoke is there.
>>
>> My Qs is, Is it injector which is letting air? car is rough with reduced
>> power
>> and I already tried the injector cleaner with the fuel but so far no
>> effect.
>>
>> I also tried losening the diesel intake on the injectors to check if no
>> RPM reduces then
>> I can spot the faulty injector but all injectors effect the RPM so I
>> guess they are partially working.
>>
>> What shoud be the next thing to check? It was all ok before I drove to
>> empty tank.
>>
>> Any tip is much appriciated.
>>
>> Thanks
>
>
> Did you fill up the new filter with diesel fuel before you installed it?
> Skipping that step in itself would create a fairly large air pocket.
>
>
>
> --
> Madesio
10-13-2007, 12:42 AM
#10
Guest
Posts: n/a
Re: Air in diesel fuel line Help!
chilldown wrote:
> I opened the filetr twice after that and yes I filled the filter
> everytime. Somehow I noticed that vacuum is not building up.
I have a hard time understanding you, but from what i gather this
happened only after you filled up the tank? Your model is a little old
but most TDI's came equipped with an in-tank fuel transfer pump with a
check valve that often times became stuck open. It would also help to
rule out any damaged parts of the tank and lines up to the belt driven
pump that would be pulling in air as the pump runs.
--
Madesio
> I opened the filetr twice after that and yes I filled the filter
> everytime. Somehow I noticed that vacuum is not building up.
I have a hard time understanding you, but from what i gather this
happened only after you filled up the tank? Your model is a little old
but most TDI's came equipped with an in-tank fuel transfer pump with a
check valve that often times became stuck open. It would also help to
rule out any damaged parts of the tank and lines up to the belt driven
pump that would be pulling in air as the pump runs.
--
Madesio
