[DeTomaso] Pantera low fuel pressure indication

[Julian Kift]

Assuming it isn't the pump (but really sounds like it is) it can only really be a restriction on the pump feed side; sock on fuel pickup or one of your filters blinded?


You say a new tank, is this a 'new to you' tank perhaps even refurbished or brand spanking new? The former could perhaps have a coating that has failed and come off?

Julian
________________________________
From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
Sent: Friday, May 18, 2018 12:32 PM
To: De Tomaso Forum
Subject: [DeTomaso] Pantera low fuel pressure indication

Hi guys,

Getting my Pantera ready for Monterey.  It received a new fuel tank a couple of. Moths ago and was started for the first time and all seemed well. After sitting for a month it was very hard to start, requiring multiple manual injections of gas into the carb.  Eventually it started and continued to run, and revs happily in neutral to 5000 rpm.

But at idle it registers somewhere between 0 and 1/2 psi of fuel pressure. At 3000 rpm it goes to about 2 psi.

Besides the obvious (bad fuel pump) what could cause such a thing?  There are no indications of a leak anywhere. The tank has five gallons of gas. I have two fuel filters, one of them mondo sized.

See video here:

https://youtu.be/jqNnqP_kxH4

Thoughts?

Mike


Sent from my iPad
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-------------- next part --------------
   Assuming it isn't the pump (but really sounds like it is) it can only
   really be a restriction on the pump feed side; sock on fuel pickup or
   one of your filters blinded?

   You say a new tank, is this a 'new to you' tank perhaps even
   refurbished or brand spanking new? The former could perhaps have a
   coating that has failed and come off?
   Julian
     __________________________________________________________________

   From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of
   Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
   Sent: Friday, May 18, 2018 12:32 PM
   To: De Tomaso Forum
   Subject: [DeTomaso] Pantera low fuel pressure indication

   Hi guys,
   Getting my Pantera ready for Monterey.  It received a new fuel tank a
   couple of. Moths ago and was started for the first time and all seemed
   well. After sitting for a month it was very hard to start, requiring
   multiple manual injections of gas into the carb.  Eventually it started
   and continued to run, and revs happily in neutral to 5000 rpm.
   But at idle it registers somewhere between 0 and 1/2 psi of fuel
   pressure. At 3000 rpm it goes to about 2 psi.
   Besides the obvious (bad fuel pump) what could cause such a thing?
   There are no indications of a leak anywhere. The tank has five gallons
   of gas. I have two fuel filters, one of them mondo sized.
   See video here:
   [1]https://youtu.be/jqNnqP_kxH4
   Thoughts?
   Mike
   Sent from my iPad
   _______________________________________________
   Detomaso Email List is not managed by POCA
   Posted emails must not exceed 1.5 Megabytes
   DeTomaso mailing list
   DeTomaso at server.detomasolist.com
   [2]http://server.detomasolist.com/mailman/listinfo/detomaso
   To manage your subscription (change email address, unsubscribe, etc.)
   use the links above.
   Members who post to this list grant license to the list to forward any
   message posted here to all past, current, or future members of the
   list. They also grant the list owner permission to maintain an archive
   or approve the archiving of list messages.

References

   1. https://youtu.be/jqNnqP_kxH4
   2. http://server.detomasolist.com/mailman/listinfo/detomaso