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Turbo wont boost????

 
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Rich47

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Since: Nov 09, 2003
Posts: 5



(Msg. 1) Posted: Sun Aug 03, 2003 10:25 pm
Post subject: Turbo wont boost????
Archived from groups: alt>autos>turbocharged (more info?)

A friend of mine has a RS Turbo Mk2 escort and the turbo will not produce
any boost pressure well only about 1 to 2 psi !!!!!!!! under hard
acceleration in 2nd . The turbo also has some bearing play in the compressor
you can wobble it up and down by about 1 mm is this bad!!!!
We have by passed the waste gate actuator so we can rule out electronic ecu
failure but even in this situation it still does not produce boost is it a
problem with the actual waste gate valve or are these reliable? is it time
for a new Turbo!!!!!!! or is there something else we are missing?

Rich

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Jeffry Franz

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Since: Jul 10, 2003
Posts: 11



(Msg. 2) Posted: Mon Aug 04, 2003 4:36 am
Post subject: Re: Turbo wont boost???? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Have you checked to make sure there are no exhaust leaks elsewhere?
Jeff

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<a style='text-decoration: underline;' href="http://www.franzcars.com" target="_blank">www.franzcars.com</a>
"Rich" <r3engineering DeleteThis @ntlworld.com> wrote in message
news:peeXa.4279$Kx1.65276@newsfep4-glfd.server.ntli.net...
 > A friend of mine has a RS Turbo Mk2 escort and the turbo will not produce
 > any boost pressure well only about 1 to 2 psi !!!!!!!! under hard
 > acceleration in 2nd . The turbo also has some bearing play in the
compressor
 > you can wobble it up and down by about 1 mm is this bad!!!!
 > We have by passed the waste gate actuator so we can rule out electronic
ecu
 > failure but even in this situation it still does not produce boost is it a
 > problem with the actual waste gate valve or are these reliable? is it time
 > for a new Turbo!!!!!!! or is there something else we are missing?
 >
 > Rich
 >
 >
 ><!-- ~MESSAGE_AFTER~ -->

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Rich47

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Since: Nov 09, 2003
Posts: 5



(Msg. 3) Posted: Tue Aug 05, 2003 7:01 pm
Post subject: Re: Turbo wont boost???? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Thanks all, suspect the turbo is at fault due to play in shaft and the test
we carried out by disconnecting the waste gate actuator and running car
turbo did not produce any pressure to speak of.

Rich
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Clifford

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Since: Aug 05, 2003
Posts: 2



(Msg. 4) Posted: Tue Aug 05, 2003 10:31 pm
Post subject: Re: Turbo wont boost???? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

not to sound stupid but when you diconnected the actuator you removed the
pipe (tube) ? or you took the actual actuator off ?

i


"Rich" <r3engineering.DeleteThis@ntlworld.com> wrote in message
news:9sRXa.5743$yl6.1213@newsfep4-winn.server.ntli.net...
 >
 > Thanks all, suspect the turbo is at fault due to play in shaft and the
test
 > we carried out by disconnecting the waste gate actuator and running car
 > turbo did not produce any pressure to speak of.
 >
 > Rich
 >
 ><!-- ~MESSAGE_AFTER~ -->
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Rich47

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Since: Nov 09, 2003
Posts: 5



(Msg. 5) Posted: Tue Aug 05, 2003 11:59 pm
Post subject: Re: Turbo wont boost???? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

All we did was pull the tube that went to the waste gate actuator off at the
control valve ( the other end to the waste gate ) and also disconnected the
little tube from the compressor casing and plugged with bolt and jubilee
clip.. BEWARE OF TURBO RUNAWAY BE VERY CAREFUL in disconnecting the waste
gate actuator there is no way of limiting the boost pressure, without a
boost gauge to see what is happening you could blow the engine. BEWARE.

Rich



"Clifford" <coetzer RemoveThis @gotadsl.co.uk> wrote in message
news:3f301415$0$46013$65c69314@mercury.nildram.net...
 > not to sound stupid but when you diconnected the actuator you removed the
 > pipe (tube) ? or you took the actual actuator off ?<!-- ~MESSAGE_AFTER~ -->
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Clifford

External


Since: Aug 05, 2003
Posts: 2



(Msg. 6) Posted: Wed Aug 06, 2003 9:00 pm
Post subject: Re: Turbo wont boost???? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

well if the turbo is ok, then the only thing that is wrong is fueling (if
no boost pipes are leeking)
Not ENOUGH fueling and no go ... the car will still run and seem 'normal'
but wont boost , bloked injectors maybe ?

i think the impeller is catching on the housing as in a previous post, that
will stop it from spinning to decent rpm for boost

"Rich" <r3engineering DeleteThis @ntlworld.com> wrote in message
news:KPVXa.6001$yl6.3151@newsfep4-winn.server.ntli.net...
 > All we did was pull the tube that went to the waste gate actuator off at
the
 > control valve ( the other end to the waste gate ) and also disconnected
the
 > little tube from the compressor casing and plugged with bolt and jubilee
 > clip.. BEWARE OF TURBO RUNAWAY BE VERY CAREFUL in disconnecting the waste
 > gate actuator there is no way of limiting the boost pressure, without a
 > boost gauge to see what is happening you could blow the engine. BEWARE.
 >
 > Rich
 >
 >
 >
 > "Clifford" <coetzer DeleteThis @gotadsl.co.uk> wrote in message
 > news:3f301415$0$46013$65c69314@mercury.nildram.net...
  > > not to sound stupid but when you diconnected the actuator you removed
the
  > > pipe (tube) ? or you took the actual actuator off ?
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Turbo wont boost???? 
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buickman

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Since: Jun 03, 2004
Posts: 7



(Msg. 7) Posted: Tue Aug 19, 2003 10:02 pm
Post subject: Re: Turbo wont boost???? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

87 Grand National.

My turbocharger lost pressure and my dealer found the catalytic converter
was restricting exhaust flow. They temporarily removed the converter and we
lit up the tires in front of the dealership. This was after they replaced
the turbocharger under warranty at 58,000 mile, which did not correct the
problem. Maybe you should disconnect the catalytic converter and give that
a try.

I too think your movement is excessive, but my turbocharger was getting oil
in the exhaust when I replaced it at about 130,000 miles. It was still
boosting to 17 psi even though the fins were damaged.

Jeff


"Rich" <r3engineering.RemoveThis@ntlworld.com> wrote in message
news:peeXa.4279$Kx1.65276@newsfep4-glfd.server.ntli.net...
 > A friend of mine has a RS Turbo Mk2 escort and the turbo will not produce
 > any boost pressure well only about 1 to 2 psi !!!!!!!! under hard
 > acceleration in 2nd . The turbo also has some bearing play in the
compressor
 > you can wobble it up and down by about 1 mm is this bad!!!!
 > We have by passed the waste gate actuator so we can rule out electronic
ecu
 > failure but even in this situation it still does not produce boost is it a
 > problem with the actual waste gate valve or are these reliable? is it time
 > for a new Turbo!!!!!!! or is there something else we are missing?
 >
 > Rich
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Turbo wont boost???? 
Back to top
Login to vote
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