[Gmecm] Re: +AFs-Gmecm+AF0- TBI Fuel problem
David Allen
davida1
Tue Aug 15 03:53:24 UTC 2006
What about a fuel cooler? These heavy equipment diesels have a fuel cooler in the fuel return circut. You would not need a big one. This would be a bulletproof way to reduce fuel temps however there are safety concerns that you would need to carefully address when you located, mounted, and plumbed a fuel cooler on a gasoline engine. It would need to be protected from potential collision damage.
Mercedes Benz has used on their gas engines a freon-cooled fuel cooler. It was basically a heat exchanger in the suction line to the A/C compressor and the fuel return from the Bosch CIS-E injection system routed through it. Just a thought+ACE-
Later,
David
----- Original Message -----
From: +ACI-Programmer+ACI- +ADw-lwester+AEA-lincsat.com+AD4-
To: +ADw-gmecm+AEA-diy-efi.org+AD4-
Sent: Monday, August 14, 2006 7:19 PM
Subject: Re: +AFs-Gmecm+AF0- TBI Fuel problem
+AD4- Yes...use the frame as a heat sink...
+AD4-
+AD4- Lyndon.
+AD4-
+AD4- ----- Original Message -----
+AD4- From: +ACI-DV Fagan+ACI- +ADw-dvfagan+AEA-yahoo.com+AD4-
+AD4- To: +ADw-kc5aeq+AEA-earthlink.net+AD4AOw- +ADw-gmecm+AEA-diy-efi.org+AD4-
+AD4- Sent: Monday, August 14, 2006 5:39 PM
+AD4- Subject: Re: +AFs-Gmecm+AF0- TBI Fuel problem
+AD4-
+AD4-
+AD4APg- Craig,
+AD4APg- Why not move the lines inside the frame rail?
+AD4APg- Assuming you have them. The fuel will stay cooler.
+AD4APg- Dennis
+AD4APg-
+AD4APg-
+AD4APg-
+AD4APg- --- Craig Smith +ADw-kc5aeq+AEA-earthlink.net+AD4- wrote:
+AD4APg-
+AD4APgA+- Darryl
+AD4APgA+-
+AD4APgA+- I confirmed it today with an ir temp gun it appears
+AD4APgA+- the fuel is getting hot
+AD4APgA+- in the tank 120 F and flashing of between the tank
+AD4APgA+- and the inlet of the
+AD4APgA+- fuel pump. The heat is coming from the Exhaust
+AD4APgA+- manifold Thru the TBI (
+AD4APgA+- 4cyl engine both manifolds stacked on one side of
+AD4APgA+- the engine).
+AD4APgA+- Has anyone had experience with insulation tapes etc.
+AD4APgA+- to insulate between
+AD4APgA+- the manifolds?
+AD4APgA+-
+AD4APgA+- Craig
+AD4APgA+-
+AD4APgA+-
+AD4APgA+- +AD4- +AFs-Original Message+AF0-
+AD4APgA+- +AD4- From: +ADw-dgilbert78+AEA-juno.com+AD4-
+AD4APgA+- +AD4- To: +ADw-kc5aeq+AEA-earthlink.net+AD4-
+AD4APgA+- +AD4- Date: 8/12/2006 7:30:23 PM
+AD4APgA+- +AD4- Subject: Re: +AFs-Gmecm+AF0- TBI Fuel problem
+AD4APgA+- +AD4-
+AD4APgA+- +AD4- There you answered your question. The pump stopped
+AD4APgA+- working , or the pump
+AD4APgA+- +AD4- blew open a bypass valve, but no pressure when you
+AD4APgA+- dead headed it
+AD4APgA+- +AD4- apparently pump is not pumping or it went into a
+AD4APgA+- bypass mode
+AD4APgA+- +AD4- internally???
+AD4APgA+- +AD4- darryl..
+AD4APgA+- +AD4- On Sat, 12 Aug 2006 19:09:39 -0500 (GMT-05:00)
+AD4APgA+- Craig Smith
+AD4APgA+- +AD4- +ADw-kc5aeq+AEA-earthlink.net+AD4- writes:
+AD4APgA+- +AD4- +AD4- I have a guage inline at the discharge of the
+AD4APgA+- pump. The pump is
+AD4APgA+- +AD4- +AD4- capable of 45+ACM- I'm using the carter external
+AD4APgA+- pump that is designed
+AD4APgA+- +AD4- +AD4- for TBI add ons its a rotary vane pump. When
+AD4APgA+- the pressure droped I
+AD4APgA+- +AD4- +AD4- pinched the return line off at the TBI pressure
+AD4APgA+- still stayed at near
+AD4APgA+- +AD4- +AD4- zero. I pulled the tank checked the pickup no
+AD4APgA+- strainer no
+AD4APgA+- +AD4- +AD4- restriction.
+AD4APgA+- +AD4- +AD4-
+AD4APgA+- +AD4- +AD4- I wish there was enough room to run an in tank
+AD4APgA+- pump.
+AD4APgA+- +AD4- +AD4-
+AD4APgA+- +AD4- +AD4-
+AD4APgA+- +AD4- +AD4-
+AD4APgA+- +AD4- +AD4- -----Original Message-----
+AD4APgA+- +AD4- +AD4- +AD4-From: dgilbert78+AEA-juno.com
+AD4APgA+- +AD4- +AD4- +AD4-Sent: Aug 12, 2006 6:32 PM
+AD4APgA+- +AD4- +AD4- +AD4-To: kc5aeq+AEA-earthlink.net
+AD4APgA+- +AD4- +AD4- +AD4-Subject: Re: +AFs-Gmecm+AF0- TBI Fuel problem
+AD4APgA+- +AD4- +AD4- +AD4-
+AD4APgA+- +AD4- +AD4- +AD4-Are you monitoring fuel pressure someplace with
+AD4APgA+- a pressure gauge
+AD4APgA+- +AD4- +AD4- or
+AD4APgA+- +AD4- +AD4- +AD4-something?? the TBI system is pretty simple.
+AD4APgA+- You have a pump
+AD4APgA+- +AD4- +AD4- pumping at
+AD4APgA+- +AD4- +AD4- +AD4-least 18lb pressure and enough volume for the
+AD4APgA+- injectors being used.
+AD4APgA+- +AD4- +AD4- The
+AD4APgA+- +AD4- +AD4- +AD4-regulator is regulating fuel pressure at the
+AD4APgA+- injector inlet
+AD4APgA+- +AD4- +AD4- typically 13
+AD4APgA+- +AD4- +AD4- +AD4-lbs. The overflow fuel free flows back to the
+AD4APgA+- tank. Possibly a
+AD4APgA+- +AD4- +AD4- fuel
+AD4APgA+- +AD4- +AD4- +AD4-filter problem, possibly fuel supply starving
+AD4APgA+- from pluged fuel
+AD4APgA+- +AD4- +AD4- pickup.
+AD4APgA+- +AD4- +AD4- +AD4-Check if pump can deliver the required volume
+AD4APgA+- at required pressure,
+AD4APgA+- +AD4- +AD4- not
+AD4APgA+- +AD4- +AD4- +AD4-much left
+AD4APgA+- +AD4- +AD4- +AD4-good luck
+AD4APgA+- +AD4- +AD4- +AD4-Darryl...
+AD4APgA+- +AD4- +AD4- +AD4-On Sat, 12 Aug 2006 18:16:19 -0500 (GMT-05:00)
+AD4APgA+- Craig Smith
+AD4APgA+- +AD4- +AD4- +AD4APA-kc5aeq+AEA-earthlink.net+AD4- writes:
+AD4APgA+- +AD4- +AD4- +AD4APg- I pulled the cap and ran it same thing.
+AD4APgA+- +AD4- +AD4- +AD4APg- I'm wondering if the fuel is flashing off
+AD4APgA+- between the tank and
+AD4APgA+- +AD4- +AD4- +AD4APg- pump.
+AD4APgA+- +AD4- +AD4- +AD4APg-
+AD4APgA+- +AD4- +AD4- +AD4APg-
+AD4APgA+- +AD4- +AD4- +AD4APg-
+AD4APgA+- +AD4- +AD4- +AD4APg- -----Original Message-----
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4-From: dgilbert78+AEA-juno.com
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4-Sent: Aug 12, 2006 6:05 PM
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4-To: kc5aeq+AEA-earthlink.net, gmecm+AEA-diy-efi.org
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4-Subject: Re: +AFs-Gmecm+AF0- TBI Fuel problem
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4-
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4-Hello: Try the test with the fuel filler cap
+AD4APgA+- loose??
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4-Darryl...
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4-On Sat, 12 Aug 2006 17:37:10 -0500
+AD4APgA+- (GMT-05:00) Craig Smith
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APA-kc5aeq+AEA-earthlink.net+AD4- writes:
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- Everyone
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg-
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- I'm having a fuel pressure problem with a
+AD4APgA+- conversion we're
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- performing on my fathers MGB. The fuel
+AD4APgA+- system is plumbed just
+AD4APgA+- +AD4- +AD4- as
+AD4APgA+- +AD4- +AD4- +AD4APg- a
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- stock Chevy TBI system running at 16+ACM- With
+AD4APgA+- an external Carter
+AD4APgA+- +AD4- +AD4-
+AD4APgA+- +AD4- +AD4- +AD4APg- fuel
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- pump mounted in the right hand battery box
+AD4APgA+- about three feet
+AD4APgA+- +AD4- +AD4- from
+AD4APgA+- +AD4- +AD4- +AD4APg- the
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- tank. The fuel return from the tbi is
+AD4APgA+- plumbed back to the
+AD4APgA+- +AD4- +AD4- tank
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- dumping about an inch from the tank
+AD4APgA+- bottom.
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg-
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- After running for about 5 miles I'm
+AD4APgA+- loosing fuel pressure. It
+AD4APgA+- +AD4- +AD4-
+AD4APgA+- +AD4- +AD4- +AD4APg- acts
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- like a vapor lock condition. After it
+AD4APgA+- sits a few minutes it
+AD4APgA+- +AD4- +AD4- +AD4APg- cranks
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- and runs fine until it heats back up. I
+AD4APgA+- figure I'm picking up
+AD4APgA+- +AD4- +AD4-
+AD4APgA+- +AD4- +AD4- +AD4APg- heat
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- from the engine compartment. Has anyone
+AD4APgA+- placed an aftermarket
+AD4APgA+- +AD4- +AD4-
+AD4APgA+- +AD4- +AD4- +AD4APg- fuel
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- return regulator downstream of the pump
+AD4APgA+- returning to the tank
+AD4APgA+- +AD4- +AD4- and
+AD4APgA+- +AD4- +AD4- +AD4APg-
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- blocked the return at the TBI? Is the
+AD4APgA+- fuel return thru the
+AD4APgA+- +AD4- +AD4- TBI
+AD4APgA+- +AD4- +AD4- +AD4APg- used
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- to cool the injectors, or does it have
+AD4APgA+- another purpose?
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg-
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- Thanks
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg- Craig
+AD4APgA+- +AD4- +AD4- +AD4APg- +AD4APg-
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