Re: [DML] need turbo help

[Marc Levy <malevy_nj@xxxxxxxxx>]

If you have determined that there is a fuel problem,
why would you replace plugs, wires, rotor, cap, and
coils?

I'd check for a soft fuel pickup hose in the tank. 
Likely the ethanol that is now put in all fuels has
taken it's toll on that hose, and it is collapsing
under high suction.  The pump itself may also be at
fault.

Where are the fuel pressure measurements being taken? 
Try taking them right at the fuel pump, and see if
they are the same as at the fuel distributor.  If they
are NOT the same, then you have crap clogged in the
fuel lines... Likely some of those rubber pieces from
the fuel pickup line!



--- kkurth2675@xxxxxxxxxxx wrote:

> i need help pretty bad.  my twin turbo delorean is
> being worked on by don steger's brother who is also
> a mechanic for over 25 years.  he has been
> communicating with don for over a month now on my
> problem.  i had new plugs/wires/rotor/rotor
> cap/injectors/fuel filter/new factory coil all
> updated just recently.  
> 
> my problem is that around 4500 rpms my car seems to
> be running out of fuel and the pressure drops to
> around 30 psi.  don told my mechanic that the
> pressure should not drop below 50 psi.  he and don
> have went back and forth trying to diagnose the
> possible reason for this.  roland (don's brother)
> believes that possible the reason is for a lack of
> fuel to the engine.  he thinks that putting bigger
> fuel lines from the tank to the distributor and the
> fuel lines off of the distributor would take care of
> the problem.  don doesn't think that's the issue
> however.  i've already replaced the control 
> pressure regulator two years ago and we're not sure
> if it's faulty part if the part isn't the problem.  
> 
> roland doesn't believe it's the problem.  does
> anyone out there know how much of a significant or
> minor problem this is?  i will do anything to solve
> this issue.  my car has the island twin turbo setup
> which some of you already are aware of.  in
> addition, my car also has the unique hobs switch on
> the car which dumps more fuel into the system under
> boost.  
> 
> the car pulls heavily to 4500 rpms no problem. 
> after that point, the car seems to fall on its face
> and tapers off and the pressure drops below 50 down
> to 30 psi.  would replacing the control pressure
> regulator solve the problem?  would possibly
> changing all the fuel lines to a larger diameter to
> bring in more fuel solve the problem under boost. 
> don steger has had customers of is with my same
> setup run with the same stock fuel lines and have no
> problems.  
> 
> what is my car doing wrong?  my car is around 63psi
> under normal load and according to the workshop it's
> supposed to be 75 psi.  is there a problem with my
> car somewhere else?  i've replaced just about
> everything on my car that can be replaced and don't
> know if there's something else that needs to be
> replaced.  could it be a fuel pump issue issue? 
> i've already replaced the pump a few years ago. 
> 
> the car starts/idles/and runs excellent up until
> 4500rpms and then tapers off and doesn't
> consistently rev to 6500 where it should.  please
> help me out, anyone, asap so i can get my car back
> and start enjoying it.  
> 
> kris kurth
> minneapolis
> island twin turbo
> kkurth2675(at)comcast.net
> 
>

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